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05/26/2005 03:04:21 PM · #1 |
I have seen a few questions about work flow. I love shooting in raw because it renders a better original but with CS not supporting the 350D RAW .CR2 files I find myself getting lazy and just shooting in HQ-JPG. Below is a RAW picture reduced to a 100% Crop and saved as tiff. Then converted to jpeg 6 times. Are the artifacts real bad or OK? In your opinion?
These Frames were taken from a RAW picture converted to Tiff. All frames are 100% crops [640x640] and saved for web as jpg set at K.
In the 6-frame picture the following applies:
1. Frame # 1 - 100% Crop from Tiff and âsaved for webâ. [Compression x1]
2. Frame # 2 â Frame #1 with no adjustments âsaved for webâ. [Compression x2]
3. Frame # 3 â Frame #2 with no adjustments âsaved for webâ. [Compression x3]
4. Frame # 4 â Frame #3 with no adjustments âsaved for webâ. [Compression x4]
5. Frame # 5 â Frame #4 with no adjustments âsaved for webâ. [Compression x5]
6. Frame # 6 â Frame #5 with no adjustments âsaved for webâ. [Compression x6]
For a better view this is Frame #1
Compared to Frame #6 after 6 jpg compressions
Is it just me are there very little artifacts showing up even after 6 compressions?
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05/26/2005 04:21:12 PM · #2 |
I see a lot of stuff going on the sky on my laptop. Instead of smooth transition from 1 shade to the next, there are dots and spots. And it isn't smooth. you have to be looking for it though. There is some degradation on the tree - it looks more pixelated, but its not as noticible, for me at least, as the sky.
Hope that helps...
d
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05/26/2005 05:36:22 PM · #3 |
Thank you fro your response. I can see it but seems to be a small amount. It seems to me that I would expect a lot more artifacts after 6 JPG compressions.
Message edited by author 2005-05-26 17:36:54.
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05/26/2005 05:59:38 PM · #4 |
yeah, what dahkota said.
so your saying when you compressed only 1 time, you got more artifacts then when you compressed 6 times?
see, I truly am learning all this stuff. My sillouette compression was way too much, an did not notice till it was too late.
My work flow is now doing what you do, upload from jpeg, before editing a pix, I save to tiff. Edit in tiff, then save for the web in jpeg.
what a learning curve.
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05/26/2005 06:04:52 PM · #5 |
you have to remember that on a computer screen the compression noise isn't that noticiable. However, a print, particularly a large print, will probably show more.
Not bad for compressing 6X though. People make it sound like the image would be unrecognizable.
d
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05/26/2005 06:12:34 PM · #6 |
Originally posted by dahkota:
you have to remember that on a computer screen the compression noise isn't that noticiable. However, a print, particularly a large print, will probably show more.
Not bad for compressing 6X though. People make it sound like the image would be unrecognizable.
d |
but to my understanding about jpeg, its better to not save into jpeg everytime because the file keeps compressing. that is why I go to tiff during edits. correct courtney?
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05/26/2005 06:14:58 PM · #7 |
Yes. I wouldn't save in JPEG at all except to upload to DPC. When I first started with my camera 6 months ago, I had no clue what RAW was. Now I don't shoot JPEG at all.
JPEG is lossy, TIFF is lossless. Save in TIFF whereever possible.
d
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05/26/2005 06:55:15 PM · #8 |
Ok courtney, will do.
YYYeeeeeee HHaaaawwwww....I'm off and running now. OUch.
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