Colorcode picker

In the image above, see the grid of gray squares inside the image? That is what the eye dropper will show you – I took a screen shot, so when doing so, the eye dropper icon does not show in screen shot, but you can see the grid of gray squares.

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95mm ND2-400 Variable ND Lens Filter - 1-8.6 Stop Range, Ultra-Slim 20-Layer Nano-Coated Neutral Density Filter for Cameras

There are two scales here. One set is for portraits, and the other set is for landscapes. Click on one of the squares on the right side – those will warm up your white balance, and see if any of those make your food look nicer, or more appealing. You can click on as many squares as you like, and the WB will shift each time.

Take your eye dropper and click it on one of the gray squares, or even the white square on the color checker to get a neutral white balance. As soon as you click on it, you will see the white balance shift immediately.

ZGP crystals possess large nonlinear coefficients (d36=75pm/V), wide infrared transparency range(0.75-12μm), high thermal conductivity(0.35W/(cm·K)), high laser damage threshold (2-5J/cm2)and well machining property, ZnGeP2 crystal was called the king of infrared nonlinear optical crystals and is still the best frequency conversion material for high power, tunable infrared laser generation. We can offer high optical quality and large diameter ZGP crystals with extremely low absorption coefficient α < 0.02 cm-1(at pump wavelengths 2.0-2.1 µm), which can be used to generate mid-infrared tunable laser with high efficiency through OPO or OPA processes.

Colorcontrastchecker

by J Schulte · 2016 · Cited by 263 — We demonstrate a scheme for nonlinear pulse compression at high average powers based on self-phase modulation in a multi-pass cell using fused silica as the ...

LGS is a new type of mid-infrared nonlinear crystal. LiGaS2 has excellent properties such as wide band gap, low two-photon absorption, wide transparent range, small group velocity mismatch, high thermal conductivity, and low thermal expansion coefficient.

There’s been several posts about white balance here on the blog recently. Having a proper white balance is critical for the color in your photos.

High-quality crystals of BGSe (BaGa4Se7) is the selenide analogue of the chalcogenide compound BaGa4S7, whose acentric orthorhombic structure was identified in 1983  and the IR NLO effect was reported in 2009, is a newly developed IR NLO crystal. It was obtained via the Bridgman–Stockbarger technique. This crystal exhibits high transmittance over the wide range of 0.47–18 μm, except for an absorption peak at around 15 μm.

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This was great Christina, thank you. I think I am using my gray card incorrectly. I place a gray card with a target in the center and use that for my WB setting when I am shooting. I don’t save those images and now I realize I should after reading this so I can tweak the range of wb and colors in post. I still don’t get what all the other colors are for though, no one seems to use them.

In the shot to the left, you can see a little color checker to the right of the drink. This is extremely helpful when you have a colored product, to make sure you get that color accurate. This color checker obviously only has 3 squares – which is really all you need to get an accurate white balance.

Colorpicker from image

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Product Specifications · Frame Rate. 41 fps · Lens Mount. C-Mount · Pixel Size. 5.86 · Quantum Efficiency. 81 (Mode 0) / 82 (Mode 7) (% at 525 nm) · Resolution.

I use both of these. In shots where there isn’t room for the X-rite color checker, I will use the QP Card and stick it to a wood block so that it can stand up.

Sep 20, 2018 — Microscope objectives are usually designed to be used with a specific group of oculars and/or tube lenses strategically placed to assist in the ...

I'm Christina Peters. I’ve been a commercial food photographer for more than 25 years. I shoot all over the country and still love what I do.

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Therefore, they usually don't need high magnification (many objects are framed with telescopes with focal length between 500mm and 1000mm) but it is important ...

AGS is transparent from 0.50 to 13.2 µm. Although its nonlinear optical coefficient is the lowest among the mentioned infrared crystals, high short wavelength transparency edging at 550 nm is made use of in OPOs pumped by Nd:YAG laser; in numerous difference frequency mixing experiments with diode, Ti:Sapphire, Nd:YAG and IR dye lasers covering 3–12 µm range; in direct infrared countermeasure systems, and for SHG of CO2 laser. Thin AgGaS2 (AGS) crystal plates are popular for ultrashort pulse generation in mid IR range by difference frequency generation employing NIR wavelength pulses.

365 nm LED Emitters are available at Mouser Electronics ... 365 nm LED Emitters. Products (17) ... Wavelength/Color Temperature. Illumination Color ...

Every time I shoot, I throw the color checker in a frame, just to have it, just in case. I do mix my lighting a lot, so having a color checker in a frame is very helpful.

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Gallium Selenide (GaSe) non-linear optical single crystal, combining a large non-linear coefficient, a high damage threshold and a wide transparency range. It is a is very suitable material for SHG in the mid-IR.

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Hi Patty, that’s correct. When I’m shooting on location without my second monitor with me, this is what I do. I wait till I get home and use the color checker that way if I’m having WB problems.

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AGSe AgGaSe2 crystals have band edges at 0.73 and 18 µm. Its useful transmission range (0.9–16 µm) and wide phase matching capability provide excellent potential for OPO applications when pumped by a variety of different lasers. Tuning within 2.5–12 µm has been obtained when pumping by Ho:YLF laser at 2.05 µm; as well as non-critical phase matching (NCPM) operation within 1.9–5.5 µm  when pumping at 1.4–1.55 µm. AgGaSe2 (AgGaSe2) has been demonstrated to be an efficient frequency doubling crystal for infrared CO2 lasers radiation.

Aspheric lenses are used to minimize optical aberrations within the human eye4. Parts of the eye including the tear film, cornea, and crystalline lens can ...

If you struggle with this, you are not alone. When people are first starting out, this is definitely one of the camera settings that does take time to learn. So just remember to be patient with yourself while you work on your food photography. It’s a process.

Procedural Glass Material, created with Blender's procedural nodes.

If you are wanting to do food photography for a living, at some point you will be asked to photograph a food product on a white background, or you will need to photograph a food product (bottle of a sauce for example), so the color must be accurate. I have to say, this is probably about half of the advertising work that I do – photographing food products on a white background, or partially white background, where I have to get the color of the food accurate.

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The first way will be with using the neutral gray scale. This will make your WB very neutral, and will color correct your light to try to make it as white as possible.

A color checker is a color chart with gradated colors that when used with software after you take the picture, can help you get your white balance to look nice in your photos.

Is the Lightroom process the same even if not shooting tethered? In other words, if I opened the image with the color checker in Lightroom after shooting (as opposed to during), do I follow the same steps as above?

Hi Robin! I should have mentioned that in the post – the other colors are very useful when doing printing with CMYK ink process. They have an understand number value so the printer will know that red color in the color checker is a true red. Very great when shooting a product that has color in that needs to match in printing.

Here are my Amazon Affiliate links for these two color checkers. Should you buy one, I’ll make a small commission at no cost to you.