Photoshop: increase the number of alpha channels allowed

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Photoshop limit you to 53 Alpha Channels. Please raise that limit to something like 500. 53 where did that limit come from. There seems to be no limit on layer, Layer mask and paths.

If you can't raise that limit then let us save selections as path with a name as well as named alpha channels. Having to convert a selection to work path then renaming it or copying and renaming it a pain.
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John McAssey

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Posted 7 years ago

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Chris Cox

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There are limits on layers, and the number of layer masks is limited by the number of layers: 8000. Paths have a limit, but I can't recall the number offhand.

Alpha channels are limited by a number of factors. Even getting the count up to 53 was kind of tricky (hint: plus 4 for color, and another 7 indices for internal use).

It would help if you told us why you were saving that many selections.
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John McAssey

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If it was tricky putting alpha channels into the channels palette then how about adding a selections palette where selections are save in a straight forward manner instead of being tricky and saving them where a trick in needed.
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PECourtejoie, Champion

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Chris, the trick/workaround in this case would be to save channels as layer masks? (maybe in a dedicated group?)
Ah ah! 64channels. Are the hidden ones LAB HSLB?
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Chris Cox

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Quick Select mask, Layer Mask, Filter Mask, etc.
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John McAssey

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One would need to have layers to save layer mask. I'm using Channels to map the location and shapes of images in Photo Collage Templates. The Channels are being used to position transform and align smart object layers created by placing any Photoshop supported image file type. RAW PSD PNG etc. The alpha chanel is also use for a layer mask to act as a cropping mask to constrain the placed smart object to the shape and place of its alpha channel. To create a collage with more the 53 images I need to create several Collage templates populate them and then populate an extra template so I can populate it with the populated collages PSD files generated because of the 53 alpha channels limits.

Here is a link to my Photoshop Photo Collage Toolkit Documentation. The toolkit consists of four template rules and eight Photoshop scripts.
http://www.mouseprints.net/old/dpr/Ph...

the download link is http://www.mouseprints.net/old/dpr/Ph...
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christoph pfaffenbichler, Champion

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»One would need to have layers to save layer mask. ... The alpha chanel is also use for a layer mask to act as a cropping mask ...«
As you seem to use them as Layer Masks anyway I would recommend using empty Groups to store them and then moving the SOs into those.
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John McAssey

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They are indeed used as layer mask on placed image files smart object layers that are placed into the template by scripts. The template itself may have only the required background layer. Background layers do not support transparency so it can not have a layer mask. I do not want to add hundreds of unused layers just to be able to save the number of selections I need.
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John McAssey

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I want the process of creating photo collage template PSD files to be easy not complicate hard process that is error prone. Right now all a template need to be is a Background layers and some Alpha channels that map the locations, size, shape and stacking order a user want images placed in over the background layer. Simple peace of cake. Create a selection save selection as alpha channel name "Image n" repeat for as many images you want in the collage. Having to create Groups to add layers, create selections, add layer mask complicates the process of creating template files and complicates the processing of the templates files and increases file side just because Photoshop limits the number of selections you can store in alpha channels. Selections are easy to create save as Alpha Channels and Alpha channels are easy to load. Create selection save selection load selection easy to do and under stand. Creating a Path is not as easy to do because of the way the have to rename the work path. The is no save path by name. You create a work path then rename it a make sure it not active so you can create the next one and you can not move paths around easily like you can selections.
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Jeffrey Hicks

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Hello, I can explain a reason why I would want more than 53 channels... I do specific print simulations and custom color separations in photoshop and I have built a rather comprehensive set of actions used for color separating, and it would really help to be able to create more channels... I will show you why I have reached the limit... it is based on providing as many possible channels as the end-user might need when creating the seps, but of course the process will be eliminating tons of un-needed channels to get down to a final decent print number like 4, 6, 12, etc.... but without a large set of possible color channels separated from the original RGB, it makes it harder for the separator to pick good channels to work from.... my program creates these channels as screen-print simulations / blends-spot colors.

1-BASE SHIRT COLOR
2-SHIRT TEXTURE COLOR (has a fibers texture fill)
________________________

3-UNDERBASE WHITE INK
________________________

4- 3-COLOR BLEND YELLOW
5- 3-COLOR BLEND MAGENTA
6- 3-COLOR BLEND CYAN

________________________

7- 6-COLOR BLEND RED
8- 6-COLOR BLEND YELLOW
9- 6-COLOR BLEND GREEN
10- 6-COLOR BLEND CYAN
11- 6-COLOR BLEND BLUE
12- 6-COLOR BLEND MAGENTA
________________________

13- 12-COLOR SPOT-BLEND RED
14- 12-COLOR SPOT-BLEND YELLOW
15- 12-COLOR SPOT-BLEND GREEN
16- 12-COLOR SPOT-BLEND CYAN
17- 12-COLOR SPOT-BLEND BLUE
18- 12-COLOR SPOT-BLEND MAGENTA
19- 12-COLOR SPOT-BLEND ORANGE
20- 12-COLOR SPOT-BLEND LIME
21- 12-COLOR SPOT-BLEND MINT
22- 12-COLOR SPOT-BLEND AZURE
23- 12-COLOR SPOT-BLEND VIOLET
24- 12-COLOR SPOT-BLEND ROSE

__________________________

25- 12-COLOR SPOT-PASTEL RED
26- 12-COLOR SPOT-PASTEL YELLOW
27- 12-COLOR SPOT-PASTEL GREEN
28- 12-COLOR SPOT-PASTEL CYAN
29- 12-COLOR SPOT-PASTEL BLUE
30- 12-COLOR SPOT-PASTEL MAGENTA
31- 12-COLOR SPOT-PASTEL ORANGE
32- 12-COLOR SPOT-PASTEL LIME
33- 12-COLOR SPOT-PASTEL MINT
34- 12-COLOR SPOT-PASTEL AZURE
35- 12-COLOR SPOT-PASTEL VIOLET
36- 12-COLOR SPOT-PASTEL ROSE
__________________________

37- 12-COLOR SPOT-SHADE DARK-RED
38- 12-COLOR SPOT-SHADE DARK-YELLOW
39- 12-COLOR SPOT-SHADE DARK-GREEN
40- 12-COLOR SPOT-SHADE DARK-CYAN
41- 12-COLOR SPOT-SHADE DARK-BLUE
42- 12-COLOR SPOT-SHADE DARK-MAGENTA
43- 12-COLOR SPOT-SHADE DARK-ORANGE
44- 12-COLOR SPOT-SHADE DARK-LIME
45- 12-COLOR SPOT-SHADE DARK-MINT
46- 12-COLOR SPOT-SHADE DARK-AZURE
47- 12-COLOR SPOT-SHADE DARK-VIOLET
48- 12-COLOR SPOT-SHADE DARK-ROSE

__________________________

49- LIGHT-GREY
50- MEDIUM GREY
51- DARK GREY

52- HIGHLITE WHITE
53- BLACK
_____________________________

Now I've found that when I am in multi-channel mode, I can add 3 more channels to work with.. but no more... so that is actually a total of 56.

The problem is that I could add more channels by making my quartan-color blends into spot colors from the original document such as--- Red-Orange, Orange-Yellow, Yellow-Lime, etc... that would require 12 more spot channels, and if I wanted to create the pastels and shades of each of those, add another 24.

Now the whole point is to eventually distill or boil or cook down all the empty and useless channels into a final print sequence of good spot or blend screens, but it helps to have all the ingredients you might need when you start the cooking process.... so for now my actions have to create a separate document or work around this another way to give you the Quartan-spot colors. I have the primary, secondary, and tertiary all set, but the quartans require another 36 channels!

You see, some of us have actually reached this channels limit and we have a valid reason why we want more. Thanks for your time and effort in meeting this need, however rare it might seem to be.

-Jeff