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Light Meters - Bookshelf

Digital Photography, An Integrated Approach

Creator: Bruce Warren | Photography - 2012-01-01

Camera Meter Metered area Reflected-Light Meter Use Camera Meter Incident-Light Meter Use Reflected-Light Meter Use. Top: Reflectedlight meters (also known as luminance meters) measure the amount of light emitted or reflected by the ...

Publisher: Wadsworth Publishing Company

About this book
Turn your enthusiasm into striking photographs! The perfect companion wherever you go, DIGITAL PHOTOGRAPHY provides a straightforward, comprehensive introduction to photography for the digital photographer. Detailed step-by-step photo sequences and concise discussions show you how to execute photography processes and special techniques using actual equipment and materials, while a full chapter on troubleshooting provides help when you need it. Numerous high-quality, full-color and duotone reproductions of works by well-known photographers such as Ansel Adams and Alfred Stieglitz offer inspiration and guidance. From "seeing" and composing the shot to applying special techniques and working in Photoshop, this information-packed book covers everything you need to know to become a successful digital photographer.



128 pages

Portrait Photographer's Handbook

Creator: Bill Hurter | 2007-08-01

An image with full tonal range has a significant amount of data in all areas of the histogram. l\/l ETE RI NG Reflected-Light Meters. Because exposure is so critical to producing fine portraits, it is essential to meter the scene ...

Publisher: Amherst Media

About this book
Combining time-tested practices with contemporary methods, this guidebook details the fine art of capturing formal and casual posed images. With advice and guidance from the finest and most decorated portrait and wedding photographers in the country, this instructional discusses subjects such as lighting in the studio and on location, improving improvisational shooting techniques, and how to retouch images in the post-production process to create truly flawless looks. A chapter addressing the common problems in taking portraitures—from working with subjects with glasses to subjects that vary in size, facial features, and skin tone—is also included.



128 pages

Master Guide for Professional Photographers

Creator: Patrick Rice | 2006-11-01

The movement of the mirror can cause Sharp, but the background will be some camera shake, which can result in an image that is less sharp. bjurred_ Light Meters A light meter is a device that measures the light falling on a sceiie/ ...

Publisher: Amherst Media

About this book
From shooting basics to image editing, this textbook is an all encompassing reference that can be used by students in any level of photography class as well as those studying to complete the Certified Professional Photographer program. Beginning with an overview of camera choices and basic camera functions, this guide outlines the fundamentals of lighting equipment, light theory, composition, and digital imaging while providing a comprehensive roadmap for efficiently taking images from conception to client presentation. Tips for overcoming obstacles are offered from the hard-won advice of photographers who have successfully passed the Professional Photographer Certification Program tests.


Camera and Photo Accessories Directory

Light meter - Wikipedia, the free encyclopedia
A light meter is a device used to measure the amount of light. In photography, a light meter is often used to determine the proper exposure for a photograph.

Extech Instruments - Light Meters
EN100 - Compact Hygro-Thermo-Anemometer with Light Sensor. 11-in-1 Environmental Meter. EN150 - Compact Hygro-Thermo-Anemometer with UV Light Sensor

NXT Light Meter - nxtprograms.com
This Light Meter is simply the Color Sensor on a stick that you can use to sample light readings on surfaces or pointed anywhere you want.

Sekonic Light Meters: Exposure Meters and Color Meters for ...
Controlling light is an essential skill for photographers, videographers and digital filmmakers. Sekonic exposure meters, color meters and illuminometers help you ...

Light Meters - B&H Photo Video Digital Cameras ...
Shop and review an enormous array of Light Meters from top brands like Spectra Cine, Sekonic, Gossen and Quantum Instruments, with unbeatable prices and service


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Camera and Photo Accessories

Editor's picks

  • Mastech

    Dr.Meter Digital Illuminance/Light Meter LX1330B , 0 - 200,000 Lux Luxmeter

    Photography (Mastech)

    Rating (100 reviews):
    (4.3/5)
    Mastech

    great

    0 5/5 Doctor C - See all my reviews Verified Purchase(What's this?) Works great. If you're an electrician or in the lighting business, this is a must have as the electrical code mandates how much illumination certain areas of a building must have.If you're a photographer, this is NOT what you're looking for. This light meter gives you the amount of light in LUX and candle powers...no information at all about the f/stop or ISO or anything like that ;) 0 Help other customers find the most helpful reviews  Was this review helpful to you? , April 9, 2010

    Very Basic, but works.

    0 3/5 S. Howe (Vermont) - See all my reviews, January 1, 2010

    Good for general purpose, but not for science.

    0 4/5 Pvc Distributors "Flexpvc" (Nevada) - See all my reviews, February 19, 2010
    List Price: $79.95
    4-Range, 0/200/2,000/20,000/200,000 Lux
    Unit Selectable, Lux or Footcandle
    Over range indication
    1 Year Warranty
    Data Hold


  • Dr.Meter

    Dr.Meter New Digital Light Meter 0.1 Lux - 200,000 Lux Tester FC Photo Camera Luxmeter

    BISS (Dr.Meter)

    Rating (16 reviews):
    (3.7/5)
    Dr.Meter

    enlightened

    0 4/5 noniwayno - See all my reviews Verified Purchase(What's this?) This review is from: Dr.Meter New Digital Light Meter 0.1 Lux - 200,000 Lux Tester FC Photo Camera Luxmeter This product shipped quickly and surprised as to how fast I received it. everything is as described, works great easy to use, very helpful in my LED business for site surveys of existing lighting. Using a rechargeable 9v battery, good idea. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , July 22, 2013

    I don't even know if it works

    0 1/5 Joseph P. Aiello (Houston, TX United States) - See all my reviews Verified Purchase(What's this?) This review is from: Dr.Meter New Digital Light Meter 0.1 Lux - 200,000 Lux Tester FC Photo Camera Luxmeter This might be the best light meter in the world but I'll never know because there are absolutely no instructions on how to use it. The range button gives no clues at all on what scale you're in, and the readings between scales don't jive. Spend a few extra bucks and get something with documentation. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , July 5, 2011

    This is a Digital Light Meter not a photographic exposure meter

    I find this inexpensive meter extremely useful for assessing lighting conditions at venues where I am taking photographs and videos. That said this is not a photographic exposure or flash meter and unfortunately if you are purchasing it as an inexpensive substitute to use for that purpose you will be disappointed.This meter gives you a simple to understand Lux reading corresponding to the brightness in the room. Our eyes are amazing self adjusting optical miracles... they compensate for conditions so much that we often have a difficult time judging just how light or dark conditions really are.Modern cameras and video cameras have sophisticated reflective light meters built into them and if used in an auto or semi-auto mode they will adjust the images we take for overall brightness. They will also predict whether the exposure will be under or over-exposed in manual as compared to a photo that is an even 18% gray. Very few people use traditional exposure... 5/5 S. G. MILLER (Kent, WA United States) - See all my reviews, April 11, 2014
    List Price: $49.99
    Price: $25.99
    You Save: $24.00 (48%)
    Low Power Consumption with Low Battery Icon to Ensure Long-lasting Life & Timely Replacement
    Unit and Sign Display for Easy Reading;Convenient Lux. and FC (Foot Candle) Selection
    Equipped with LSI-Circuit to Provide High Reliability & Durability
    Wide Measuring Range - Up to 200,000 Lux. or 20,000 FC
    Data Hold Function to Hold the Current Readout on the Screen;Over Range Indication - Highest digit of "1" will be displayed


  • Sekonic Corporation

    Sekonic L-308s Light Meter - Black

    Photography (Sekonic Corporation)

    Rating (87 reviews):
    (4.6/5)
    Sekonic Corporation

    Dead simple to use

    0 5/5 Keith Nichols (Dallas, TX United States) - See all my reviews, October 12, 2006

    Samll accurate lightmeter you can take everywhere

    0 5/5 BruceL "BruceL" (San Francisco Bay) - See all my reviews Verified Purchase(What's this?) This review is from: Sekonic L-308s Light Meter - Black (Electronics) When I started to look for a new lightmeter, I want something small, reliable, accurate, and can do ambient and flash. This little meter is not the most feature rich, but definitely one of the smaller more compact ones. And there is nothing that will break, unlike some of the units with swivel head. I have used Gossen LunaPro SBC, which is excellent for extreme low light, but a bit bulkier and lack flash capability. I have also used Minolta Flashmeter III and Sekonic L-328. There are definitely other meters out there that can do more tricks, but the small size and low cost of this meter enable me to carry it everywhere. After all, a meter used in the field is better than a meter left in storage. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , October 15, 2008

    Nice- but not for portraiture

    0 4/5 Talvi - See all my reviews, February 6, 2008
    List Price: $233.00
    Smallest digital flash-meter for reflective and incident light readings in ambient or electronic flash lighting conditions
    At ISO 100, the ambient EV range is 0 to 19.9, flash f/stops range from f/1.4 to f/90.9
    Pocket-sized, and easy to stow away. The L-308S measures 2.5"W x 4.3"H x 0.9"D (63mmW x 110mmH x 22mmD)
    Includes Lumidisc with pouch, soft case, strap, synchro terminal cap, AA battery.
    Exposures accurate down to a tenth-of-a-stop for both ambient and electronic flash light readings in full-stop mode.


  • Pyle

    Pyle PLMT21 Handheld Lux Light Meter Photometer with 20000 Lux Range Per Second Sampling and Digital Display

    Home Improvement (Pyle)
    List Price: $69.99
    Price: $34.99
    You Save: $35.00 (50%)

    Repeatability: 2%
    Measurement range up to 20,000 LUX - Sampling rate: 2 times/sec
    Adjustable range for quick easy readings
    Accuracy Max 4%
    Reading hold function - 9V battery operated (not included)


  • Polaris

    Polaris SPD100 Digital Exposure Meter

    Photography (Polaris)

    Rating (68 reviews):
    (4.3/5)
    Polaris

    A Valuable Meter at a Great Price

    Customer Video Review Length:: 8:00 MinsThe Polaris SPD-100 Light Meter comes in this simple unassuming box. The packaging is very unassuming. Inside the box the Polaris SPD-100 comes with a carrying case, a lanyard, and a manual.The meter is a nice size coming in at 2.5 inches wide, 7/8 of an inch thick, and 4 and 11/16 inches tall. The battery door is located on the back. The meter uses a standard AA battery.When you turn on the meter the first thing the it does is a battery check. It shows this information for about a second. This is nice because if you are about to start a complex and lengthy shoot, you can just change out the battery rather than having to stop the process (model, assistant, etc.) and restart after changing a battery. Also, if the meter does run out of batteries, the meter will save your most recent settings as it does when you turn it off and back on. Another nice thing about this meter is that it automatically turns itself off after 5 minutes of... 5/5 Amazon Customer (California) - See all my reviews Verified Purchase(What's this?) This review is from: Polaris SPD100 Digital Exposure Meter (Electronics), May 8, 2011

    Terrific studio meter for the price

    I have one of these that I use regularly with my studio flash setup.Inexpensive high-power studio flashes generally don't work with your camera's TTL metering system, and when you bring in multiple lights, complex diffusers and so forth, calculating exposure gets to be a challenge. With the Polaris, I setup my lighting the way I want, fire the flashes (either one at a time or all at once), and the meter gives me correct exposure information that's always 100% spot on. It can also help me achieve certain specific lighting ratios, such as making sure the background is subdued or helping me know one part of my subject isn't in too-deep shadows - in effect, you just fire the flash a few times, metering all the key parts and noting how far apart the exposures are. For calculating studio flash exposure, the Polaris can't be beat, especially considering the price.Of course, these days you can achieve good results with digital cameras by simply taking lots of test... 5/5 Busy Executive (Long Island, NY) - See all my reviews, February 17, 2010

    Essential if you want to shoot better photos

    For more than 30 years, I have loved photography. I've bought just about every type of camera and gadget you can think of, but for some reason I didn't own a light meter until I saw this one in action. I guess I never thought I needed one. I was wrong. Having a light meter takes your photography to a new level.Since exposure is controlled by three distinct variables... ISO, aperture and shutter speed, many hobbyists usually take control of whichever they feel is most important for their specific shot. They may need a fast shutter for moving subjects, or a wide aperture for artistic shots, but they still leave the camera to decide the other variables.The trouble with this is that they base their estimates for the other two variables on a fundamentally flawed premise, which is assuming what they see in the lens has an accurate correlation to the actual light in a shot, however, this is not always the case.If you walked into a room which was... 5/5 Joe Crescenzi "From CouponPages.Com" (Staten Island, NY USA) - See all my reviews, January 12, 2013
    List Price: $309.95
    Large analog" (Gas-Gauge Style) Scale for easy fractional measurements.
    Oversized LCD display shows all data and functions clearly and easily, even at full arm's length.
    Unique multi-flash feature makes it simple to calculate how many times the flash must be fired to achieve a desired f/stop.
    Four exposure modes to choose from.
    Standard PC terminal for sync cord flash activation. Compact, ultra-thin design. Polaris is less than 1- inch thick and weighs just 4 oz.
    Accurate to 1/10 f-stop.
    Requires only one "AA" battery. (Not included)


  • Mastech

    Light Meter LX1010B,50,000 Lux Luxmeter with lcd display

    Home Improvement (Mastech)

    Rating (99 reviews):
    (4.2/5)
    Mastech

    General purpose lux meter, does very well

    This is a great device for home use; it has decent accuracy and performs its function, and its cheapness comes from the thin, low quality plastic case that probably won't take kindly to drops. A similar device with a resolution to 1 lux will cost anywhere from 3-30x this device; costly ones are calibrated against a standard lab, and most costly have resolutions below 1 lux. Cheapo ones are not calibrated such as this 1010b.Some clarifications from criticism made on other reviews: lux meters are made to approximate the brightness of light as it appears to human vision. Its is not an exposure meter for photography, but with formulas, conversions can be made. Human color vision can go down to ~ 0.03 lux, and most lux meters are designed for industrial use to estimate how much lighting a human work environment should have; ~ 0.3 lux is the brightness of a full moon illuminating a dark night [ no light pollution from any man made sources] a light that few will ever read or... 5/5 James Q. Smith "JQS" (Western USA) - See all my reviews, February 2, 2012

    Easy to use; very sensitive.

    0 5/5 E. Mazzone (Groveport, OH United States) - See all my reviews, February 11, 2008

    Good, But Lacking On The Low End Of The Scale

    0 4/5 Stuart Steele (Austin, TX) - See all my reviews Verified Purchase(What's this?) This review is from: Light Meter LX1010B,50,000 Lux Luxmeter with lcd display (Tools & Home Improvement) I found this lux meter to be completely satisfactory in general. What I did not understand from the description is that the lux scale is an integer scale, and the lowest that the meter reads in 1 lux, which is still pretty bright. This is through no fault of the product, but I had hoped for a meter that read fractional lux. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , May 8, 2009
    List Price: $50.00
    Price: $13.99
    You Save: $36.01 (72%)
    LCD Display;Data Hold;Low battery alert
    12 Months Warranty!
    Auto Zeroing;Over-range indication;
    High Accuracy and rapid response
    Ranges: 0 - 50,000 Lux


  • Hydrofarm

    Hydrofarm LG17010 Digital Light Meter

    Lawn & Patio (Hydrofarm)

    Rating (16 reviews):
    (3.4/5)
    Hydrofarm

    Good!

    0 4/5 TEXASDISTRIBUTORS (DALLAS,TEXAS) - See all my reviews Verified Purchase(What's this?) This review is from: Hydrofarm LG17010 Digital Light Meter (Lawn & Patio) Works just fine and for the price compared to name brand light meters you just can't beat this meter. I compared it to reading next to a 150.00 meter and it read the same so it is accurate for sure. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , September 26, 2013

    It works great

    0 5/5 Blues - See all my reviews Verified Purchase(What's this?) This review is from: Hydrofarm LG17010 Digital Light Meter (Lawn & Patio) The product came fast from the shipper. I had a problem getting the Battery in, But when the battery is pushed straight down it goes in nice. And the meter works great. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , November 28, 2012

    Just another typical Hydrofarm product!!

    0 5/5 Walt - See all my reviews Verified Purchase(What's this?) This review is from: Hydrofarm LG17010 Digital Light Meter (Lawn & Patio) This is an excellent little light meter and an especially good deal for the cost!! It's very accurate and easy to use!! 0 Help other customers find the most helpful reviews  Was this review helpful to you? , October 5, 2012
    List Price: $44.95
    Convenient hand held remote sensor
    Light meter
    3 scales for precise readings
    Measures up to 5000 foot candles
    Measures grow lights or sunlight


  • MacGroup

    Sekonic Corporation 401-479 LITEMASTER PRO L-478DR Photographic Light Meter (Black)

    Photography (MacGroup)

    Rating (29 reviews):
    (4.5/5)
    MacGroup

    Received Non-US model

    0 3/5 Chris - See all my reviews Verified Purchase(What's this?) This review is from: Sekonic Corporation 401-479 LITEMASTER PRO L-478DR Photographic Light Meter (Black) (Electronics) This is my first meter and I was very happy with how easy this one is to use except that I could not figure out how to trigger my Pocket Wizard Plus III's. I spent several hours looking online and watching videos and COULD NOT figure out what was going on. Finally, while I was replacing the batteries, I noticed a large "CE"on the back of the meter; it's a Euro meter which does not operate on the same radio frequencies as the US model; therefore, my US purchased PWs don't work. I'm in the process of returning the meter and I will be buying the same model again. Seems like a great meter especially if you use TTL radios or a mix of speed lights, studio lights and want the power of adjusting them individually. If you order this meter, BEFORE YOU DO ANYTHING ELSE, look on the back for "CE". If you see it, put it back in the box and return it. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , June 5, 2013

    Makes a photographer's life simple.

    0 5/5 Randy E. Blue - See all my reviews Verified Purchase(What's this?) This review is from: Sekonic Corporation 401-479 LITEMASTER PRO L-478DR Photographic Light Meter (Black) (Electronics) This product is great. There is a bit of a steep learning curve, especially if you are totally new to using light meters. The built-in ability to control Alien Bee studio lights was the main selling point for me. However, this meter can handle about any combination of lighting you can throw at it. Just be cautioned that you should not purchase this meter just days before an important shoot. I think even somewhat experienced photographers will need some practice time to try to get a handle on all that the meter can do. Take the time to learn it, and you will love it. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , May 11, 2013

    Great but not the same build quality as the 758 meter

    0 5/5 Lee C Reichel - See all my reviews Verified Purchase(What's this?) This review is from: Sekonic Corporation 401-479 LITEMASTER PRO L-478DR Photographic Light Meter (Black) (Electronics) I own the 758DR meter but thought I could replace it with the 478DR but couldn't understand the price difference between the two. I bought the 478DR and I do like it but the construction is not in the same class as the 758DR. It is easier and faster to use which is great but the labeling for f-stop, shutter speed and menus are smaller and not quite as crisp as I had thought. It will fit in a shirt pocket much better than the 758 and you do not have to fiddle with dials, the 478 is more intuitive. For me, setting the radio channels is much easier on the 478. Remember that it is not equipped with a spot meter like the 758, that has to be purchased separately. I have both meters but the 758 is now gathering dust. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , November 24, 2012
    List Price: $469.00
    DTS Exposure Profiling matches the meter to the performance of your camera, Precise exposure and lighting starts with precise, repeatable metering
    Pocket Wizard triggering and Flash Power Setting w/ControlTL radios. Control Nikon, Canon and select studio flashes with a touch of a finger.
    Cine/HD Cine modes for today's HDSLR and Video Cine cameras. Effortlessly switch between HDSLR and Cine for exact exposure settings in exact increments for both.


  • Extrasensory Devices

    Luxi Light Meter Attachment for iPhone 5/5s

    Wireless (Extrasensory Devices)

    Rating (10 reviews):
    (3.5/5)
    Extrasensory Devices

    Pretty good!

    0 3/5 P. Craig (Chicago) - See all my reviews, September 18, 2013

    Excellant Product

    0 5/5 G - See all my reviews This review is from: Luxi Light Meter Attachment for iPhone 5/5s (Wireless Phone Accessory) I have been experimenting with mine for several weeks now and I'm very happy. This seems to be quite an accurate incident light meter. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , August 20, 2013

    Great Product

    0 5/5 F. Gregory Salvatini - See all my reviews, February 20, 2014
    List Price: $29.95
    Luxi works with the free Luxi App
    Luxi allows for more accurate light and color metering
    Luxi is a diffusion dome that clips over your iPhone's front-facing camera


  • Hydrofarm

    Hydrofarm LG17000 Light Meter

    Lawn & Patio (Hydrofarm)

    Rating (15 reviews):
    (3.3/5)
    Hydrofarm

    Good Product, Needs Instructions (provided below)

    At first, it is quite a mystery how this meter works and reads. The instructions are well-hidden inside the cardboard packaging, and easy to miss, or even toss. Unfortunately, the company's website has only half the instructions available in PDF. If you find the complete version on the web, they are still hard to read.Here is a quick summary that will allow you to use the meter:1. The sensors are on the top, not the front, so make sure the top is pointed at the light source.2. There are two bands on the meter: "Fluorescent" and "Sun & High Intensity". These correspond to the "500" and "5000" settings. So if you are using the 500 setting, read the Fluorescent band; if you are using the 5000 setting, read the Sun & High Intensity band.3. Whichever band you are reading, multiply it by 10.4. Footcandle is the amount of light cast upon a certain area. The amount of light your plants need is measured in footcandle hours. So for... 4/5 Change the World! (Sebastopol, CA USA) - See all my reviews This review is from: Hydrofarm LG17000 Light Meter (Lawn & Patio) At first, it is quite a mystery how this meter works and reads. The instructions are well-hidden inside the cardboard packaging, and easy to miss, or even toss. Unfortunately, the company's website has only half the instructions available in PDF. If you find the complete version on the web, they are still hard to read.Here is a quick summary that will allow you to use the meter:1. The sensors are on the top, not the front, so make sure the top is pointed at the light source.2. There are two bands on the meter: "Fluorescent" and "Sun & High Intensity". These correspond to the "500" and "5000" settings. So if you are using the 500 setting, read the Fluorescent band; if you are using the 5000 setting, read the Sun & High Intensity band.3. Whichever band you are reading, multiply it by 10.4. Footcandle is the amount of light cast upon a certain area. The amount of light your plants need is measured in footcandle hours. So for... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , July 5, 2009

    Awesome

    One thing I should say right away to the people who think it doesn't work - this light meter is specifically meant for measuring light From light bulbs commonly used for INDOOR gardening, not being simply pointed at the sun. This thing got here sooner than the delivery estimate, and works excellently for very specific light measurements that actually are within 2% which is great for the price.If you need a nice cheap light meter, this one is easy to use and well worth it.The main reason people get confused is that you need a besic understanding of the different ways that light gets measured and how relevant it is for your indoor plants. Also the variety or strain of plant you're growing require varying amounts of light to properly photo synthesize.Hopefully my review is helpful to those on the fence about buying it. Mine works just fine, but Ive also been gardening for 13 years, so I didn't need the instructions. And the instructions I've seen in... 5/5 John N.F. Abel "SURVIVALIST - tools for hands" (Mississippi) - See all my reviews Verified Purchase(What's this?) This review is from: Hydrofarm LG17000 Light Meter (Lawn & Patio) One thing I should say right away to the people who think it doesn't work - this light meter is specifically meant for measuring light From light bulbs commonly used for INDOOR gardening, not being simply pointed at the sun. This thing got here sooner than the delivery estimate, and works excellently for very specific light measurements that actually are within 2% which is great for the price.If you need a nice cheap light meter, this one is easy to use and well worth it.The main reason people get confused is that you need a besic understanding of the different ways that light gets measured and how relevant it is for your indoor plants. Also the variety or strain of plant you're growing require varying amounts of light to properly photo synthesize.Hopefully my review is helpful to those on the fence about buying it. Mine works just fine, but Ive also been gardening for 13 years, so I didn't need the instructions. And the instructions I've seen in... Read more Help other customers find the most helpful reviews  Was this review helpful to you? , October 3, 2012

    Works great !!!

    0 5/5 David Morgan - See all my reviews Verified Purchase(What's this?) This review is from: Hydrofarm LG17000 Light Meter (Lawn & Patio) I read many bad reviews about this but I think those people may have been looking for something different or didn't read the instructions. As long as you realize there are 3 different settings that you have to adjust depending on the light in the area you're measuring, this unit does just fine. I don't see how it could be any easier to use.The unit reads in foot-candles so you'll need to reference what that means to you and your application but reference values can be found easily with an internet search. 0 Help other customers find the most helpful reviews  Was this review helpful to you? , April 21, 2013
    List Price: $25.99
    Price: $17.99
    You Save: $8.00 (31%)
    Gives a precise reading with two scales
    Lifetime silicon sensor -no battery
    Accurate within +/- 2%
    Easy to use, hand held design
    Designed help you grow plants, flowers, and food bigger, healthier, and better



Gift Ideas


Hraunfossar Iceland Post Cards

iceland, flowing, hraunfossar, waterfall, water,
Hraunfossar (Borgarfjörður, western Iceland) is a series of waterfalls formed by rivulets streaming over a distance of about 900 meters out of the Hallmundarhraun,Iceland
Price: $$1.10

Nucleosome Lights Greeting Cards

research, grad, graduate, science, cards, lab
There is about 3 meters of DNA inside the nucleus of every cell. It fits in using complex packaging. The basic unit is a nucleosome; DNA wrapped around histones like beads on a string. (Inspired by my time in the Narlikar lab at UCSF)
Price: $$3.15

Speed of Light Sun in Blue Circle Tshirt

physics, atom, science, mathematics, geek, geeky,
The first true measurement of light-speed came in 1676 by a fellow named Olaf Roemer. He noted that the time elapsed between eclipses of Jupiter with its moons became shorter as the Earth moved closer to Jupiter and became longer as the Earth and Jupiter drew farther apart. This anomalous behavior could be accounted for by a finite speed of light. He calculated that the speed of light was something like 2.14 x 10^8 meters per second. This measurement, considering its antiquity, method of measurement, and 17th century uncertainty in exactly how far Jupiter was from the Earth, is surprisingly close to the modern value of 2.99792458 x 10^8 meters per second. These modern values are obtained using devices called laser interferometers, which can very precicely pin down speeds and distances.
Price: $$34.95

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