About photoshop 64 bit

[mindeyes86]

So i install photoshop 64 bit on a 64 bit computer. When i try to make a new file it has only 8,16 abd 32 bit. And something else, when i open a file in 32 or 16 bit most of the filters are disable, only with 8 bit i can use all the filters. Why and how can i fix it ????????

 

[Steve]

That's two different things your talking about.
Your running a computer with a a 64bit OS and running a 64bit program that can take advantage of what a 64bit offers mainly access to more memory and a little faster processing.

That's completely unrelated to the 8, 16, and 32bit/Channel setting in PS.

You don't fix the issue you're referring to with some options grayed out, that's normal.

 

[mindeyes86]

Thanks for the fast reply. So its ok that i cant use some filters with the 32 bit?

 

[Steve]

Perfectly normal but don't ask me why.

 

[Tom Mann]

Perfectly normal, but don't ask me why.

32 bpc (bits per channel) files use floating point representations of each color. In contrast, almost all filters use integer arithmetic, either 8 bit ints or 16 bit ints. To make an 8 bpc filter work with 16 bpc files is not terribly difficult, however to switch from 8 or 16 bit ints to floats and floating point arithmetic takes a good bit more work, so most filter mfgrs haven't switched over.

There's other reasons, but that is probably the main one.

HTH,

Tom M

 

[Steve]

Thanks Tom

 

[mindeyes86]

Thanks guys