.PSD File Size Question

Pho3niX · 12-19-2005

Hello,

I have been using Photoshop for several years now, but more recently I have been having problems with the sheer sizes of the files (.psd). I have created several 8x10 images and they are roughly 90MB. Is that a normal size for a document with those dimensions?

And one final question, What is the Large Document Format (.PSB) file type used for?

Thanks in advance,
Andrew

malboroman · 12-19-2005

is that 8x10px???

If it were in inches they could be that size, but pixels... nah! Never...

bedlam123 · 12-19-2005

Quote:

Originally Posted by Pho3niX

Hello,

I have been using Photoshop for several years now, but more recently I have been having problems with the sheer sizes of the files (.psd). I have created several 8x10 images and they are roughly 90MB. Is that a normal size for a document with those dimensions?

And one final question, What is the Large Document Format (.PSB) file type used for?

Thanks in advance,
Andrew

Since you are asking about .psb you must be working in at least CS, right? Respectfully I disagree with malboroman. The file size if an 8X10 can become extremely huge depending on what you are doing, particularly if you are talking about before rasterization and/or flattening.

In versions of Photoshop prior to Photoshop CS, the maximum image size was 30,000 pixels by 30,000 pixels. That limit still holds for the Photoshop (PSD) file format. However, you can now work with images much larger than that. The new maximum pixel dimensions are 300,000x300,000 pixels. Files over 30,000 pixels in either dimension can be saved as TIFF (up to 4GB, the maximum size the TIFF standard supports) or Photoshop Raw (not to be confused with Camera Raw). There is also the option of using the new PSB file format—effectively a large-image version of the Photoshop PSD format. You activate the PSB file format capability in the File Handling pane of the Photoshop Preferences dialog box by checking the box Enable Large Document Format (.psb).

The PSB file format is not compatible with earlier versions of Photoshop, nor with any other program. It can be used only within Photoshop CS. If you need to share an oversized image with someone who isn't working in Photoshop CS, use TIFF.

Pho3niX · 12-20-2005

Thank you very much for you reply.

To answer your question, I am working with the latest version of CS2. Thank you for the information regarding pixel limits. Hopefully I won't be dealing with 4GB files anytime soon.

The file sizes I mentioned were actually quite small for the 8x10s I have made in previous years. For my grade 12 Media Arts summitive I made an 8x10 collage and when it was completed it consisted of +20 layers, most of which had their own layer styles. Its was well over 300MB.

Thanks again!
Andrew

sbole · 12-22-2005

what is the *dpi that you are using the standard is 72 but for like poster images and shirts and clothing the *dpi would be like 100-300 but the higher the *dpi the higher the file size

(dpi - dot per inch)

Pho3niX · 12-23-2005

I am using the standard 72...I beleive. This is just a guess but doesn't it change the dpi to 300 after selecting 8x10 in the presets window?

Andrew

bedlam123 · 12-23-2005

Quote:

Originally Posted by Pho3niX

I am using the standard 72...I beleive. This is just a guess but doesn't it change the dpi to 300 after selecting 8x10 in the presets window?

Andrew

Yes, it does change the dpi to 300 when you use the presets window for files measured in inches. The other custom sizes listed in pixels create files with a 72 dpi.

mhalweg · 04-03-2006

i've been creating a lot of 8x10 collages lately and usually the file size ends up being between 100-200 megs without combining all the layers. using 300dpi. just depends on the dpi and how big and the number of things used is

ldinami7e · 04-25-2006

Humm...good to known this

jcjb2002 · 04-27-2006

We do a lot of print work, and advertising that is printed. I create everything in 300 cause 72 resized larger can distort. I would like to know how to create a proof for an 11 x 17 file that would ultimately be able to print at 300... but could transfer at 72 over the Internet. At this point some of the ones I resized from 300 to 72 are still too large to display online.

*MoodsR4Cattle* · 04-27-2006

Quote:

Originally Posted by jcjb2002

We do a lot of print work, and advertising that is printed. I create everything in 300 cause 72 resized larger can distort. I would like to know how to create a proof for an 11 x 17 file that would ultimately be able to print at 300... but could transfer at 72 over the Internet. At this point some of the ones I resized from 300 to 72 are still too large to display online.

If you are only sending a proof, then a 72 dpi image and half size should be enough for a client. You should check with the printer, but most can accept an image at 50-25% of the actual size as long as it's at 300 dpi. Not recomended to send a 72 dpi image to print (unless it's 4X larger in inches).