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10/15/2008 08:40:03 PM · #26 |
Originally posted by snaffles:
I realize I may be hijacking this thread a little, but I'd like some advice.
I am shooting RAW with my D40 then converting to PSD and doing all editing in PSD. Then I save final file as JPEG and upload that.
Got a comment on a shot re compression grain. As the shot is currently in voting I won't divulge what it is, but would like to know more about compression grain. Help! |
When you save a file as JPEG, usually there is a slider bar (or a text box) asking you for the % quality setting (0 -> 100). A 100% quality setting would have zero or little artifacts, but biggest file size for that image. I dont use PSD so I cannot comment on the specifics.
ETA: You may also want to read this article, and this one.
Message edited by author 2008-10-15 20:57:56. |
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10/15/2008 08:49:07 PM · #27 |
Originally posted by snaffles:
I realize I may be hijacking this thread a little, but I'd like some advice.
I am shooting RAW with my D40 then converting to PSD and doing all editing in PSD. Then I save final file as JPEG and upload that.
Got a comment on a shot re compression grain. As the shot is currently in voting I won't divulge what it is, but would like to know more about compression grain. Help! |
Why don't you save the final file as PSD and then save-for-web? At DPC sizes it works just fine for me, without compression grain. |
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10/15/2008 08:59:35 PM · #28 |
| I'm using PS CS2 on a Mac...I don't know if I can save it as anything other than as a jpeg but will look and see if I can. thanks! |
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10/15/2008 09:04:00 PM · #29 |
Originally posted by snaffles:
I'm using PS CS2 on a Mac...I don't know if I can save it as anything other than as a jpeg but will look and see if I can. thanks! |
Saving for web saves the files as a JPEG. Save for Web is a method of save that reduces/ eliminates most compression grain so that it is suitable for web viewing (such as on DPC). |
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10/15/2008 09:06:00 PM · #30 |
Originally posted by snaffles:
I'm using PS CS2 on a Mac...I don't know if I can save it as anything other than as a jpeg but will look and see if I can. thanks! |
You have Save for the Web, look over this tutorial, especially the end of it. Save your image when you are done editing as a .PSD. Resize to 640 pixels. Then Save for the Web. moving the quality slider right up to the file size limit. I created a folder to save all my web images, I keep the .psd separate. |
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10/16/2008 12:06:47 AM · #31 |
On newer canons (and probably nikons as well) you get 14 bit color depth in RAW and only 8 in JPG. What that means is more information is recorded in teh RAW file - more colors sure, but also more dynamic range is possible Perhaps up to 2 or even 4 stops more!
Some of the advantages of RAW files have been replicated in Adobe Lightroom - like non-destructive editing. It's nice to know you can't screw up the original capture so that you can come back in the future to edit it another way. LR also allows you to 'edit' and not have to re-save the image so you can avoid the lossy issues of JPG (for the most part).
RAW still is the best way to go if want to adjust/tweak the white balance later on. If you plan to do a lot of editing on an image the higher bit depth will also allow you to push /pull colors and such further before you have issues with digital noise/banding.
If you import all your images into LR then working with a RAW file takes no more time that with a JPG.
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10/16/2008 04:21:59 PM · #32 |
Ok, now I know a little more about compression grain, thanks all!
So how do I change the compression grain ratio, is that in-camera or PS? |
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03/23/2009 04:49:45 PM · #33 |
I know this is an old topic, but i wanted to post this link for all to see:
//www.boingboing.net/2009/03/22/jpeg-compression-600.html |
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03/23/2009 05:00:17 PM · #34 |
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