Bloated Photoshop files

[jimking]

Can anyone tell me why a 50x40@60dpi CMYK 8bit tif would blow up to 254mb? The images are flattened. There are no paths or masks, layers. These files should be only 27mb. Any ideas, thanks

[Joe]

What happens if you do a "Save As" and create a brand new file? Still 254 mb? Also, are we talking 50x40 inches?

[jimking]

Good Morning Joe. Yes it is inches. This is a problem someone I've chatted with for years is having, not me, and I can't figure it out. Here's the thread--http://www.graphicdesignforum.com/forum/showthread.php?t=33660
That last person posted suggests a resave as you'll notice.

[jimking]

Just to let you know, Joe, this guy works with large format. That's why the files are large and res is lower than usual.

[Joe]

Hi Jim...nice job of plugging B4Print in there. LOL

Save As is about all I can think of if the file is already flattened and no extra stuff although I wonder if it might make a difference where it is saved? ie...local drive vs network drive. You wouldn't think so but never say never. I might have missed it but what version of PS is he using?

[Zimmy3]

Hey Jim,
Im not a Photoshop expert at all but I just made a photoshop document 40x50 CMYK 8bit
and it's only 544k. Of course there is no art(blank channels)W
When I was making it,the setup told me in the lower right part if the window it was gonna be 27.5.

[jimking]

It got figured out, here's the problem:

"Double check that it's not set to dots per cm instead of dots per inch. It's caught me out in the past!"
     
 
"OMG, christ on a crutch, of all the stupid.... How long I been doing this?
Lob's got it.
 
Well, at least I'll admit being stupid today.
But I did learn a lot of other things from you wilier ones."

[born2print]

format can make a difference too, but not THAT much.
My .psd is 1.1MB and my .jpg is 700KB...
I suspect it's a file spec "typo" like 400x500" or 600ppi or some other carbon-unit-interface issue

...OR what JimKing says above :grin:

[jezza]

Sure it's not 'large document format' as in .psb? I've seen 'em do all kinds of screwy stuff

[LRob]

Tiff w/ lzw will make it smaller also

[DigitalCrapShoveler]

I just made the same file and got a 544K document saved as a PSD file. I am not a fan of JPEGing or Tiffs w/LZW compression because of the whole lossy problem. I don't understand people who want exact color saving files like this knowing full well that their image is being resampled.

Also, is the file 8 bit or 16 bit? That will make an enormous difference in file size.

[jimking]

I just made the same file and got a 544K document saved as a PSD file. I am not a fan of JPEGing or Tiffs w/LZW compression because of the whole lossy problem. I don't understand people who want exact color saving files like this knowing full well that their image is being resampled.

Also, is the file 8 bit or 16 bit? That will make an enormous difference in file size.

It's was figured out. The job size was in centermeters not inches and it threw the guy off.

[DigitalCrapShoveler]

Reading is not one of my strong points obviously.

[Joe]

FWIW...LZW compression is lossless.

[DigitalCrapShoveler]

That is correct, but let me explain... If I have to decompress files due to their instability I have LOST my patience. If a database is attached to an image file that can be corrupt, and does, I have LOST my mind!

They may not technically be "lossy", but it depends on where the loss is felt. No one will argue that LZW compression is unstable. I myself have been bit too many times to ever recommend using it.