Question for Bear re Photoshop - DPChallenge Forums

Pentax DA 18-55mm f/3.5-5.6 AF

02/01/2006 08:33:45 PM · #1

Bear - I went through your tutorial (very nicely done, by the way) as I'm learning to work more with layers rather than just adjusting the base picture. I always create a "duplicate" of my RAW image before even opening it, then work with that. After reading your tutorial, I still do that, but then saved the image after opening as a .psd file. Question is, why is that .psd file so huge? What information is it adding?

faidoi

Pentax K10D

02/01/2006 08:35:29 PM · #2

psd file includes all the layers that you duplicated.

02/01/2006 08:38:21 PM · #3

That makes sense. I never realized how much information all that processing adds. Thanks!

02/01/2006 08:43:18 PM · #4

So who needs me? LOL

BTW, If you're immediately saving-as a psd you don't need to make the duplicate file first; open, save-as, and you're working on a duplicate right there.

R.

Pentax DA 18-55mm f/3.5-5.6 AF

02/01/2006 08:43:22 PM · #5

When saving as .psd, unless you turn off maximize psd, it saves all that could possibly be needed in order to use the image in one of the other Adobe programs. Explained a little better below. Hope it helps. :)

This is what is listed under Photoshop CS - Help

***************************************************************
Photoshop format (PSD)

Photoshop format (PSD) is the default file format and the only format that supports most Photoshop features besides the Large Document Format (PSB). Due to the tight integration between Adobe products, other Adobe applications like Adobe Illustrator, Adobe InDesign, Adobe Premiere, Adobe After Effects, and Adobe GoLive can directly import PSD files and preserve many Photoshop features. For more information, see Help for the specific Adobe applications; also see Saving images for use in video and Saving images for use in motion graphics.

When saving a PSD file for use in a previous version of Photoshop or ImageReady, you can set a preference to maximize file compatibility.

To maximize compatibility with previous versions of Photoshop and with other applications (Photoshop):

1. Do one of the following:
* In Windows, choose Edit > Preferences > File Handling.
* In Mac OS, choose Photoshop > Preferences > File Handling.
2. Choose Always from the Maximize PSD File Compatibility menu. This saves a composite (flattened) image along with the layers of your document.

Note: If file size is an issue or if you're only opening your files in Photoshop, turning off Maximize PSD File Compatibility reduces the file sizes significantly. In the Maximize PSD File Compatibility menu, choose either Ask to prompt you on whether to maximize compatibility when saving or Never to save your document without maximizing compatibility.

If you edit or save an image using an earlier version of Photoshop, unsupported features are discarded. Keep in mind the following features when working with earlier versions of Photoshop:
* Photoshop CS introduces nested layers, Hard Mix blending mode, Photo Filter adjustment layers, 56 channel limit, text on a path, support for files greater than 2GB, support for files greater than 30,000 pixels in any dimension, non-square pixels support, 16-bit layers, 16-bit patterns, and 16-bit Brushes.
* Photoshop 7.0 introduced the Linear Burn, Linear Dodge, Vivid Light, Linear Light, and Pin Light blending modes and the Layer Mask Hides Effect and Vector Mask Hides Effect advanced blending options.
* Photoshop 6.0 introduced layer sets, layer color coding, layer clipping paths, fill layers, layer styles, editable type, and advanced type formatting. Photoshop 6.0 also added new layer effects.
* Photoshop 5.0 introduced layer effects; however, effects added in later versions of Photoshop are not supported. Photoshop 5.0 also introduced color samplers, spot channels, and embedded ICC profiles.
* Photoshop 4.0 introduced adjustment layers and guides.

faidoi

Pentax K10D

02/01/2006 08:47:42 PM · #6

Even with jpg if you don't flatten the image would be larger.

02/01/2006 08:49:43 PM · #7

I need to find that minimze thingie. I just opened a RAW (6.63M) file in Photoshop CS, then saved without any editing to a .psd file, which is, ahem, 36.8M. Must be all that compatability stuff it's saving!

02/01/2006 08:52:00 PM · #8

Originally posted by Bear_Music:

So who needs me? LOL

BTW, If you're immediately saving-as a psd you don't need to make the duplicate file first; open, save-as, and you're working on a duplicate right there.

R.

Cool. That saves a step. :-) Now I just have to be a bit more judicious in how and where I save pics. I currently go by date for files, but realized the other day I'm going back and editing stuff in some of those files that I already have checked as being burned to disk. (Just rambling here - feel free to ignore...)

And hey, I hear if I bring lots of food and possibly dancing women, you'll let me visit. Is that true? :-)

02/01/2006 08:58:25 PM · #9

Originally posted by Melethia:

And hey, I hear if I bring lots of food and possibly dancing women, you'll let me visit. Is that true? :-)

The quality of the food is more important than its quantity, and the women (dancing or otherwise) are optional, but otherwise, yes. Besides, you ARE a woman, right?

R.

02/01/2006 09:00:50 PM · #10

WOW, skyarcher, I never knew that! And after all these years too... Thanks for the tip.

R.

02/01/2006 09:18:33 PM · #11

Originally posted by Bear_Music:

WOW, skyarcher, I never knew that! And after all these years too... Thanks for the tip.

R.

You're welcome. Glad it was of use to someone. :)

Christine

Canon EF-S 18-55mm f/3.5-5.6

02/01/2006 09:20:20 PM · #12

Originally posted by Bear_Music:

Originally posted by Melethia:
And hey, I hear if I bring lots of food and possibly dancing women, you'll let me visit. Is that true? :-)

The quality of the food is more important than its quantity, and the women (dancing or otherwise) are optional, but otherwise, yes. Besides, you ARE a woman, right?

R.

Technically, yes, I are a woman. And by birth even. But I seem to be one of those "gosh, you're such a great friend" women. Not that it's a bad thing... But I can't dance.

o2bskating

Canon EOS-350D Rebel XT

02/01/2006 09:29:40 PM · #13

Originally posted by Melethia:

Originally posted by Bear_Music:

Originally posted by Melethia:
And hey, I hear if I bring lots of food and possibly dancing women, you'll let me visit. Is that true? :-)

The quality of the food is more important than its quantity, and the women (dancing or otherwise) are optional, but otherwise, yes. Besides, you ARE a woman, right?

R.

Technically, yes, I are a woman. And by birth even. But I seem to be one of those "gosh, you're such a great friend" women. Not that it's a bad thing... But I can't dance.

Your not the only one who gets the "you're a great friend" thing! who needs them!!! i hate dancing... i'll just tear my car appart and go 4 wheeling.

Beagleboy

Canon EOS-30D

Tokina AF 12-24mm f/4.0 AT-X Pro DX

02/01/2006 09:40:49 PM · #14

I followed Skyarcher's advice and tested on one image. The PSD file before was 33580 KB. After, it was 21301 KB. That's an almost 37% saving in file size. Cool!

Thanks Christine!

Canon EF-S 18-55mm f/3.5-5.6

02/01/2006 09:43:42 PM · #15

Originally posted by Melethia:

Technically, yes, I are a woman. And by birth even. But I seem to be one of those "gosh, you're such a great friend" women. Not that it's a bad thing... But I can't dance.

Well, that's not really a problem, since I can't hear... The important question is, do you like good food?

R.

o2bskating

Canon EOS-350D Rebel XT

02/01/2006 09:44:25 PM · #16

is there a maximum size file that photoshop cs2 can handle?

02/01/2006 10:00:07 PM · #17

Originally posted by Beagleboy:

I followed Skyarcher's advice and tested on one image. The PSD file before was 33580 KB. After, it was 21301 KB. That's an almost 37% saving in file size. Cool!

Thanks Christine!

You are very welcome! :D

02/01/2006 10:09:19 PM · #18

Originally posted by Beagleboy:

I followed Skyarcher's advice and tested on one image. The PSD file before was 33580 KB. After, it was 21301 KB. That's an almost 37% saving in file size. Cool!

Thanks Christine!

That's still a darn big file for an image that started out at 6+M. Gotta love all those 1's and 0's.

02/01/2006 10:12:47 PM · #19

Originally posted by Bear_Music:

Originally posted by Melethia:
Technically, yes, I are a woman. And by birth even. But I seem to be one of those "gosh, you're such a great friend" women. Not that it's a bad thing... But I can't dance.

Well, that's not really a problem, since I can't hear... The important question is, do you like good food?

R.

I do like good food. I cannot, however, prepare it. My culinary skills are limited to "heat six minutes on high", I'm afraid, though I can quite adeptly boil water, should the need for boiling water arise.

02/01/2006 10:15:08 PM · #20

Originally posted by o2bskating:

Your not the only one who gets the "you're a great friend" thing! who needs them!!! i hate dancing... i'll just tear my car appart and go 4 wheeling.

Eh, I really don't mind so much anymore. A great friend is a good thing.

Nikon AF-S NIKKOR 24-70mm f/2.8G ED

02/01/2006 10:26:54 PM · #21

Originally posted by Melethia:

No problem, I do the cheffing. You may boil the pasta water, assuming we cook pasta, assuming you ever show up at my door, and so forth...

R.

Neil

Fujifilm X-T30

02/01/2006 10:32:26 PM · #22

Originally posted by Skyarcher:

Originally posted by Beagleboy:
I followed Skyarcher's advice and tested on one image. The PSD file before was 33580 KB. After, it was 21301 KB. That's an almost 37% saving in file size. Cool!

Thanks Christine!

You are very welcome! :D

Add me to the thank you card please! Great tip, one of my biggest problems is my huge PSD files. (Well, my biggest storage problem anyway.)

Robert, we're all coming. Do you have seating and beds for 45,000 DPCers? ;)

GeneralE

Canon PowerShot S3 IS

Canon 12x IS USM (S3 IS built-in Lens) -- 36-432mm (35mm EQ)

02/01/2006 10:34:19 PM · #23

Originally posted by Melethia:

In the RAW file, the pixel data is probably compressed with lossless compression, the Photoshop file is not. If you multiply the total pixels (W x L) by 3 (bytes/pixel, for normal 8-bit mode) you'll get the pixel size in bytes.

o2bskating

Canon EOS-350D Rebel XT

Canon EF-S 18-55mm f/3.5-5.6

02/01/2006 10:34:41 PM · #24

i'll cook for you too!!! i know what you'll be doing after you eat....

question is how far will you walk to get the perfect photo???