Showing posts with label color balance. Show all posts
Showing posts with label color balance. Show all posts

CBL 110mm Color Balance Lens System Review

CBL 110mm Color Balance Lens System
Average Reviews:

(More customer reviews)
I know there are so many light balancing tools out there that it seems that you can't go to a camera show without seeing one per aisle. But I really fell for this when I saw it at WPPI. Basically it is an incident meter. Hold it at subject position so it reflects to the camera the light falling on the subject. Shoot a target shot and capture it. The key over expodisc is that it measures the light on the subject NOT the light on the camera position. Also it is the only one that can give accurate readings in mixed light. I own it and shot with it. I also have seen Hanson Fong use it and really respect Hanson's chioces.

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The CBL Color Balance 110MM Lens is a valuable tool for proper color balance and consistency. This 2-sided disc comes complete with a gray side and a white side, allowing you to use one side for proper color balance and the other side for proper exposure. You simply hold the CBL in front of your camera and either make an evaluation or take a white-balance-reference picture. You should assure that the subject's dominant light source is also falling upon the CBL. Thanks to its complex, varied collection of prisms and lenses upon the 'white' side, the CBL grabs a large mixture of the light source and directs it into the camera during the white balance evaluation.FEATURES:
Incident-Light Color Balance Capability for improved accuracy
Works with Most Lenses & Digital Cameras/Camcorders of a compatible size
Eliminates Post-Processing Fuss
110mm Large disc is suitable for professional lenses with large front elements
Durable, water-proof materials
Carefully-selected permanent tones of white and gray


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GENUINE WhiBal G7 Certified Neutral White Balance Card - Pocket Card (2.1"x3.35") Review

GENUINE WhiBal G7 Certified Neutral White Balance Card - Pocket Card (2.1x3.35)
Average Reviews:

(More customer reviews)
It is handy to have this accurate device around your neck or in your bag. It's amazing the difference it makes adjusting white balance with lightroom

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With more than 40,000 customers, the Genuine WhiBal has become the standard in the industry for precision WB Reference "Gray Cards". Each and every card is measured with a precision spectrophotometer to assure you that *your* card meets our industry leading specification of +/-0.5 within the a* and b* channels. Do not be fooled by RGB measurements (they have no meaning in this context). Very simply, WhiBal combines all the best features of all available White Balance cards, and meets or exceeds their technical performance in a unique package that can be used conveniently in all your shooting situations. In addition, WhiBal provides convenient neutral White and Black reference areas for setting dynamic range in your digital capture using the Black and White Eyedroppers available in RAW conversion software, PhotoshopTM, and most other editing software. Check out the educational videos on-line. (Search for WhiBal). They tell the entire story.Feature Summary:? It fits in your shirt pocket.(2.1x3.35 inches)...so you will actually use it rather than have it in your bag! ? It is basically indestructible, waterproof, etc? All 4 reference "colors" are essentially equal to or better than all tested "reference cards" for neutrality and spectral flatness. ? All cards are designed for low reflectivity, except the BlackPoint sticker which intentionally is highly reflective so that maximum Blackpoint level may be achieved. ? Larger are smaller sizes are available.? Can be used to set white balance reference, Black point and White point. ? Fits shirt pocket or can hang on studio hook or lanyard.? WhiBal is a product of PictureFlow LLC, is patent-pending and proudly made in the USA.

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GENUINE WhiBal G7 Certified Neutral White Balance Card - Pocket Kit (2.1"x3.3") Review

GENUINE WhiBal G7 Certified Neutral White Balance Card - Pocket Kit (2.1x3.3)
Average Reviews:

(More customer reviews)
When I first got this card, I thought all my white balance problems were fixed. However, as I used it for a few months, it became clear that it is not a dummy-proof solution.
It is imperative that you get a shot of the card in exactly the same lighting conditions as the picture you want to adjust in post-processing. This can be a challenge if you're outside with your kids and you're poking in and out of buildings and the trees are casting deep shadows in an otherwise sunny day. You'd potentially have to get many card exposures for all the various light settings you encounter throughout the day. The immediate surroundings have a large effect, as well. Take the same sunny conditions, and pictures on a grass field will have a different tint than ones taken on parking lot or on a brick road.
I also noticed that chromatic noise skewed my post-processing attempts when I used my software's water-dropper tool. If I happened to pick a pixel that was actually a blurp of chromatic noise, then the WB got terribly skewed. So, I'd either have arbitrarily pick a pixel that looked grey to me or smooth the results with chromatic noise reduction. Best results are had with well-exposed, low-ISO pictures where the card shows up as a uniform, solid grey with as little noise as possible.
Though with the caveats above, I highly recommend this card. It's easy to carry and is a better WB solution than relying on in-camera settings or eyeballing it in post-processing (which works, too, if you can get the hang of it). Remember to constantly take shots of the card and using the lowest ISO and you should get accurate results in post-processing.

Click Here to see more reviews about: GENUINE WhiBal G7 Certified Neutral White Balance Card - Pocket Kit (2.1"x3.3")

With more than 40,000 customers, the Genuine WhiBal has become the standard in the industry for precision WB Reference "Gray Cards". Each and every card is measured with a precision spectrophotometer to assure you that *your* card meets our industry leading specification of +/-0.5 within the a* and b* channels. Do not be fooled by RGB measurements (they have no meaning in this context). Very simply, WhiBal combines all the best features of all available White Balance cards, and meets or exceeds their technical performance in a unique package that can be used conveniently in all your shooting situations. In addition, WhiBal provides convenient neutral White and Black reference areas for setting dynamic range in your digital capture using the Black and White Eyedroppers available in RAW conversion software, PhotoshopTM, and most other editing software. Check out the educational videos on-line. (Search for WhiBal). They tell the entire story.Feature Summary:? It fits in your shirt pocket.(same size as an American business card ...2.1x3.5 inches)...so you will actually use it rather than have it in your bag! ? It is basically indestructible, waterproof, etc ? Both Pocket and Studio versions come with convenient stand for ease of setup on tables or flat surfaces. No need for someone to hold the WhiBal. ? All 4 reference "colors" are essentially equal to or better than all tested "reference cards" for neutrality and spectral flatness. ? All cards are designed for low reflectivity, except the BlackPoint sticker which intentionally is highly reflective so that maximum Blackpoint level may be achieved. ? Larger are smaller sizes are available ? Can be used to set white balance reference, Black point and White point. ? Fits shirt pocket or can hang on studio hook or lanyard, or set on a table with included table stand. ? WhiBal is a product of PictureFlow LLC, is patent-pending and proudly made in the USA.

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Mennon Set of 2 Gray Card's size 4"x6" and 6"x8", 18% Gray / 92% White Review

Mennon Set of 2 Gray Card's size 4x6 and 6x8, 18% Gray / 92% White
Average Reviews:

(More customer reviews)
This is my first time using the gray cards. What a difference. Takes a little more thought, but it is worth it.

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Set of two flexible check cards takes guessing out of setting perfect exposure and color balance, that can only be archived with high quality Mennon Gray Cards with the uniform spectral reflectance, regardless of wavelength, color or intensity of the illumination. Each card has two sides: one side white and other is gray. The gray side used as a reference area for exposure metering while the white side enables correct white balance that is so important in digital photography. Specification: *Gray side: Reflectance 17.8%; Density 0.74*White side: Reflectance 92.0%; Density 0.036*Max. deviation of reflectance: 2%*Max. error in exposure measurements: 1/8 of F-stop*Card sizes: 4"x6" and 6"x8"*Core material: high density paper based composite*Gray side material: special paper with spectrally flat 18% coating*White side material: special paper with spectrally flat 18% coating

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Opteka Premium Reference Color & White Balance Grey Card Set With Quick-Release Neck Strap for Digital Photography Review

Opteka Premium Reference Color and White Balance Grey Card Set With Quick-Release Neck Strap for Digital Photography
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These color cards are only a thin veneer of color on a white core. Don't even think of keeping loose in a pocket. My cards are already transfering colors between cards from slight rubbing together. The gray card has also picked up a brown tint (making it useless for white balance) by simply sitting next to my leather wallet--and try as I might, I cannot clean this tint--it is pemanently stained it seems.
White card has black splothes that won't come off, black card has white showingvthru from wear, gray card stained. Pretty sad--especially since I kept these iny pocket just once.

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The color values of Opteka Digital Grey Card set have been tested under varying light conditions and show a high degree of spectral neutrality. Using the industry-standard X-Rite spectrophotometer, LAB values of L* 63.8, a* -1.6, b* -0.4 are measured from the surface of the grey card under D50 standard illuminant. For optimum color correction, the black card achieves truly deep blacks (RGB 16,16,15). The grey card displays superior spectral neutrality with measured values of 162, 162, 160. The white card has a tested RGB value of (220, 224, 223). All three cards have excellent uniformity across a range of light sources.

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