We're trying to make some visual stimuli for an experiment, and we want to change the hues of the images while keeping the luminance value constant. However, changing the hue always changes the luminance as well. Is there a way to lock the luminance value?
View 3 RepliesI have 18 pictures that I want to have, for research purposes, EXACTLY the same luminance. The pictures are cut out faces and the background needs to stay white.
View 6 Replies View RelatedI have a series of grayscale images that I'm trying to adjust so that they all have the same--or at least very similar--contrast, luminance, and brightness. When I try to adjust these things, it's always measured relative to the images's starting state rather than to anything objective.
View 1 Replies View RelatedSay I have an image where I'm attempting to extract a mask from and I've found that one of the channels will serve as a good starting point. Further suppose that I have found that I want to increase the luminance level of pixels in the range of 60 - 65 by 10 luminance levels each:
i.e. all pixels with luminance values of 60,61,62,63,64,65 would, after the operation have luminance values of 70,71,72,73,74,75. Is such a thing possible with Photoshop?
What can be done to reduce or alter chromatic luminance qualities in photographic subjects of people (skin tones) and liquids (beverages, water, ice, etc.)?
View 2 Replies View RelatedI'm working on a chart that displays and names a couple hundred color swatches. I have all of their color data in a table, and I want to arrange them by hue and lightness, so I applied the Rec.709 coefficients to my data. This arranges my colors into a natural gradient--except for the reds, which have some glaring misplacement. why .709 coefficients do this, or what coefficients I should use instead?
View 13 Replies View RelatedIs it possible to extract raw luminance values from raw image files? Actually, a de-Bayerized flat matrix would be ideal but could (? maybe) deal with a 3 layer RGB matrix -- rather like the output from dcraw, only in PS. Preferably without gamma applied.
What I'd like to do: I'd like to use image stacking for exposure accumulation using "summation" but find that highlights blow out readily. Right now the workaround is to let the highlights go and bring them back with HDR from one (or more) of the original frames, but that's seriously clunky. I'd like a "scaled summation" where a luminance-dependent scaling factor is applied in the sum. I don't yet know how to get there from here in PS (there's a megaclunky way involving dcraw, Matlab, and a stacking program ...), but it seems to me that the first step is to get the luminance info.
I have a set of 25 images that I need to equate on luminance. That is, I need them to have the same luminance mean and distribution. Is it possible to do this using Photoshop? If so, what are the steps?
View 1 Replies View RelatedI'm trying to get every pixel value in the black square to 000, and all the white pixels to 255,255,255. I've started out with an 800 pixel square solid 255RGB square and then applied a solid 0RGB black square over the top in a new layer, but as can be seen by the color pickers PSCC is doing an unwanted luminance blend around the edges.
Is there anything I can do to stop it and get a solid black square on a solid white one?
I have a Dell 1907 FP Flat Panel Monitor. The controls include a 'Brightness' adjustment. I am trying to set the monitor so that I have a luminance of between 100 and 120 cd/m2. I am using a Spyder 3 Pro display calibration device to set the luminance but the device does not measure luminance. Can anyone tell me what Brightness level my monitor should be set at to achieve a luminance of 100-120 cd/m2?
View 37 Replies View RelatedWhen I try and apply a channel to an adjustment of my choosing, I get a red mask across the whole image and the alteration is global as opposed to the selection of the mask if that makes any sense? [URL] ........
View 7 Replies View RelatedI want to do some Luminance Smoothing on only the sky, in Lightroom 4. I don't think it is possible so would like to know how to do it in Photoshop if it is possible there?
View 6 Replies View RelatedI've occasionally created some tone-mapped pictures from multiple exposure brackets using the Luminance HDR program. But when I import the jpegs exported from Luminance to Xara, their Red and Blue channels appear to get swapped.
I can fix it by using a Live Effect. But why does this happen? Is there a way to losslessly avoid this before importing to Xara? Because Live Effects impose their own resolution limitations on the image.
I use quite heavy Luminance noise reduction on my images as they are shot at very high speed ISO...
I adjust this in L4, picture in preview looks as smooth as a babies bottom and perfect...
I then export as a TIF file at Adobe 1998 and when I open it in Photoshop 5 the image is really noisy like I've not done the adjustments at all...
I use a 17inch Macbook Pro with the lastest operating system, this is the second performace issue over the last few week (problems with LB too)...I export my files manually using a card reader as RAW files, from a Canon 5D Mark 3...
Is it worth re-installing?
Basically exactly how layer masks behave, except I would like to be able to have full non-destructive editing control over the masking layer (e.g. have it as a smart object). The problem with layer masks is that (AFAIK) only destructive editing is possible.
What I'm after is effectively the same as what a 'luma matte' does in After Effects. Is this at all possible in PS?
I just downloaded CC and was able to implement my workspace from CS6 and load presets. But color settings and other preferences along with screen colors etc are not how I want them. Any way to match everything with my CS6?
View 1 Replies View RelatedLet's say I have two pictures. The first one is a RAW file and the second is the same file, but a flat PSD with some color and contrast moves done to it.
What I want to do is to (of course start with processing the RAW file so I have a PSD/tiff) and then I would like to match the colors to 100%.
Usually I would do this by eye, but I would like to find out if there's any quicker way to do it? I started to look in to the color sampler tool to get the different values.
Preferably I would also like to have all these color and contrast moves in layers if possible. So that I can adjust them if I want.
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The second question is basically the same but this time the reference photo is a different picture.
I`ve found a background color for my web page and I like to get the same color in Photoshop to use it like background for my grafics.Hom can I get the exactly same colors when on my page it`s in HEX triplet numbers and in photoshop it`s in RGB & CMYK?
View 3 Replies View Relatedhow would you recommend I go about matching the bumper with everything else?
View 1 Replies View RelatedI have two images and I want to use parts of one to merge into another. How can I match grainess and brightness/contrast to make the new image look seamless.
View 6 Replies View Relatedi'm into photoshopping cars and i've got a rough idea on how to stitch bits and pieces of other cars together nicely, the problem is i still haven't a clue on how to match the colours of different cars to my target car (i.e. my car is blue but the bumper of another car is green, so how do i get that green to match my car's blue?)
i just really want to know how to get this done cause previously i was using the luminance thinggy and found it to work for SOME colours but it didn't look good.
I have the font close although i cant seem to match it exactly. But the crispness from the copied image from the web i can not match. The copied image text is very crisp. I can not match it with Photoshop. Why would this be? It doesn't matter what Alias setting i use and i tried a ton of fonts etc...
View 2 Replies View RelatedIm working on a series of images from a photoshoot.
I am having massive problems with getting the background of each image to match with one another. Each image seems to have a slightly different shade background, so basically they all look inconsistent together.
Is there anything i could do which would easily match the background from the different images together?
Using curves doesnt really help and when i do get it right (slightly similar), skin tones are then off.
The photos are done in a studio and evenly lit, the backgrounds are pale blue!
How would i go about getting this picture:
to resemble the same type of contrast/tones/colors as this picture:
i've tried using the constrast tool, and trying different hue saturation settings and lowering the opacity, but nothign really turns out as good as the ludacris cover.
I have been working on a gag project that involves placing different co-worker heads on different bodies. However, I have been having some difficulty matching the skin tones. I thought it would simply be a matter of using the eye-dropper tool, getting some average values on the face and body, then using an adjustment layer grouped to the face layer to adjust the color.
However, my results are often not even close. Is there a particular way I'm supposed to be adjusting the color?
I am currently working on a series of images for a calendar. All the photographs are portraits and were shot against the same backdrop.
I am working in Photoshop 7 and having scanned the images and given them a clean they all have different casts. Is there some way of matching the colour of one image to another, rather than attempting to do it by sight and botching it up?
I'm changing car colours using Photoshop Quick Mask, Inverse and Layers functions. Works well but how do I match the new selected colour's hue/saturation/brightness exactly to a specific car paint colour I want?
View 6 Replies View Related1)When I view the same raw file with both Lightroom 2 & Photoshop CS3 the PS version is darker with a slight colour shift. All metadata synchronised & ACR 4.5
2) When I export a photo (from LR)as TIFF (with profile) this same photo viewed on both PS and LR shows the same difference as 1 above. When same photo viewed with ADC pro, result matches LR not PS.
3) When I print photo (as TIFF above) with PS & LR the prints from both match the LR display and not PS's
I use a calibrated display.
What is the problem here anyone? Does PS use display profile differently from LR? which is correct?
how to do it choose colours, it might sound stupid but i dont know what colours would match(go with each other) on a web page.
View 6 Replies View RelatedI travel around the country and use Photoshop for various projects. I then SAVE AS a TIFF file to my flash drive and take the flash drive to an office superstore (OfficeMax, Staples, Kinkos,etc.) to print on their color printers. I run into a variety of printers, but mostly Xerox DocuColor 250's or Docucolor 12's.
How can I set my Photoshop so that the colors that print on these Docucolor printers are closer to what I see on my screen? I'm already creating the documents in 300DPI, CYMK-8 mode to be as close to the printer as possible.
I was asked to take the group photo, cut out the black girl, and insert the young man. See all images below and my results. the only thing I'm not happy with is the young man was better lit than the group one. I was playing around with the controls of the young man to bring his tone more in line with the group (hue; saturation; color levels; etc.) and I just could not figure it out.
what I can do to get the young man to match up tone wise with the group? Or vice versa, even?