Is file size for 16 bit files reported correctly in PS CS?

JT
Posted By
Julio_Trujillo
Apr 29, 2004
Views
211
Replies
3
Status
Closed
I use adjustment layers for just about everything. When I’m working with 8 bit files I can see the file size savings easily on the bottom left of the screen where there will be something like "16Mb/21Mb" with one adjustment layer set to multiply for example. However, when working in 16 bits each adjustment layer seems to add the full amount of the original file size so that using the same example above I would see "35MB/70MB" instead of the "35MB/50MB" I would expect. A couple of questions:

1. Is there something different about 16bit adjustment layers that negate the size advantage of using them (as opposed to just duping the background and multiplying that?)

2. Is there another way to check the current file size other than the bottom left display on the status bar? I’m thinking that perhaps the size is being reported incorrectly.

Thanks in advance.

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CC
Chris_Cox
May 1, 2004

1) Yes, 16 bit data doesn’t compress well. Also, we haven’t had time to add all the optimizations for 16 bit data that we’ve had to do so for 8 bit data. (it takes time, darnit 😉

2) It’s the size in memory, not the file size anyway. Different file formats will have different compression schemes, and predicting the file size isn’t easy (until you save it).

But it is being reported correctly.
JT
Julio_Trujillo
May 3, 2004
Thanks for the clarification, Chris. I guess I’l just continue flattening when it becomes too painful (usually around 750 Mbytes or so.)
And good luck with the 16bit optimizations.
M
MarcusMoehrmann
May 4, 2004
Hello

I had this: 455 MB for 8 bit, 2.6 GB for 16 bit!

Regards Marcus

How to Improve Photoshop Performance

Learn how to optimize Photoshop for maximum speed, troubleshoot common issues, and keep your projects organized so that you can work faster than ever before!

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