General Imaging questions

CH
Posted By
Conor_Hogan
Nov 29, 2006
Views
229
Replies
1
Status
Closed
Hello all,

I have been delegated the duty, here at work, to learn the basics of imaging in and out. With that being said I have a few questions reguarding Photoshop CS and ACDSee.

First, a little background into what I am doing. I work for a company that builds SQL Server databases of land for title insurance companys. So I mostly only work with black and white images that have been scanned in either by hand or through Apeture Cards (film negatives scanned into computer through the use of an industrial image scanner). The standard in saved images for our database are Tiff so that is the image format I will be working with.

my first question is this. Why is it that photoshop opens these Tiffs at 30+ meg files when the scanned image, according to Windows Explorer and ACDSee is 1 meg or under. even when i view the image in ACDSee it still gives the compressed size according to windows. Heres my problem, when i open the file in CS2 it decompresses it so i can edit it (starting in bitmap mode) all i need to do i some simple cropping and image resizing (dropping from 400dpi to 200dpi) the problem is when i resave the file as a Tiff and compress it, it still ends up twice the file size than what I began with…. what am i doing wrong?

and second.. is there a way for me to create merged image documents in photoshop.. like how pdf files are (multipages stacked on top of each other) except I want to use Tiff format. I know this is possible because it can be done with ACDSee (with ease i might add) but i’d like to keep my focus on Photoshop because I can see that it is the more powerful of the 2.

Thanks in advance for any insight you might have for me.

-Conor

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CC
Chris_Cox
Nov 29, 2006
Because the TIFF file is compressed.
Inside Photoshop, the data is uncompessed so you can work on it.

File size != image size

ACDSee is not an image editor – it only needs to decompress temporarily to create a thumbnail image.

Without details of the operations you perform, and the settings you used to save the TIFF file (I’m better you tried to save it as uncompressed, or changed the bit depth).

No, Photoshop does not support multipage TIFF.

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