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I am not aware of that color deep per channel. But I might be wrong.

The maximum color deep I'm aware of is 24 bit per channel wich I think* is considered a floating point data to store HDRI information.

There is a chance you are a little confused about this particular color depth.

32 bit images can be either a 4 chanel, 8 bit image for printing (CMYK) or a normal 24 bit image with an alpha channel.

It is normal to use a 16 bit per channel, wich can be 16x3 = 48 bit image.

When you have strong manipulation, for example playing with curves, you don't "posterize" the image.

*(Read about it some time ago. I can not find the source)

32 bits per channel are used to store HDR image information, and it is considered a floating point number.

I found the source: https://www.hdrsoft.com/resources/dri.html

I think you are a little confused about this particular color depth.

32 bit images can be either a 4 chanel, 8 bit image for printing (CMYK) or a normal 24 bit image with an alpha channel.

It is normal to use a 16 bit per channel, wich can be 16x3 = 48 bit image.

When you have strong manipulation, for example playing with curves, you don't "posterize" the image.

But there is the case of floating point images, which can store HDRI information.

I am not aware of that color deep per channel. But I might be wrong.

The maximum color deep I'm aware of is 24 bit per channel wich I think* is considered a floating point data to store HDRI information.

There is a chance you are a little confused about this particular color depth.

32 bit images can be either a 4 chanel, 8 bit image for printing (CMYK) or a normal 24 bit image with an alpha channel.

It is normal to use a 16 bit per channel, wich can be 16x3 = 48 bit image.

When you have strong manipulation, for example playing with curves, you don't "posterize" the image.

*(Read about it some time ago. I can not find the source)

I think you are a little confused about this particular color depth.

32 bit images can be either a 4 chanel, 8 bit image for printing (CMYK) or a normal 24 bit image with an alpha channel.

I think you are a little confused about this particular color depth.

32 bit images can be either a 4 chanel, 8 bit image for printing (CMYK) or a normal 24 bit image with an alpha channel.

It is normal to use a 16 bit per channel, wich can be 16x3 = 48 bit image.

When you have strong manipulation, for example playing with curves, you don't "posterize" the image.

But there is the case of floating point images, which can store HDRI information.