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DPChallenge Forums >> Individual Photograph Discussion >> Why...?
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Showing posts 1 - 16 of 16, (reverse)
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02/14/2005 12:00:33 PM · #1
Okay...can anyone tell me why these following photo's on DPC are a little blurred. I have them posted on another site using the same exact files and the are very sharp and clear.

DPC versions
' . substr('//images.dpchallenge.com/images_portfolio/28394/thumb/116710.jpg', strrpos('//images.dpchallenge.com/images_portfolio/28394/thumb/116710.jpg', '/') + 1) . '' . substr('//images.dpchallenge.com/images_portfolio/28394/thumb/116708.jpg', strrpos('//images.dpchallenge.com/images_portfolio/28394/thumb/116708.jpg', '/') + 1) . '

The other site

//www.photographyblog.com/gallery/showphoto.php?photo=9639&sort=1&cat=500&page=1

//www.photographyblog.com/gallery/showphoto.php?photo=9637&sort=1&cat=500&page=2
02/14/2005 12:04:08 PM · #2
Did u USM the pictures before you posted them to DPC?
02/14/2005 12:05:10 PM · #3
Yes...they are the exact same files.
02/14/2005 12:09:10 PM · #4
Did you USM the picture before or after you resized it?

The photographyblog site might run their own sharpening algorithm on the photos before showing them (like smugmug does).
02/14/2005 12:11:00 PM · #5
I did it after.
02/14/2005 12:12:35 PM · #6
Wow. If I didn't see it with my own eyes, I wouldn't have believed it. That picture is murdered on DPC compaired to the other site. What gives.
02/14/2005 12:13:54 PM · #7
I've noticed that my photos NEVER look as good on dpc as they do when I look at them before I upload.
02/14/2005 12:14:21 PM · #8
Lol...murdered isn't the word lol. I don't understand it.
02/14/2005 12:15:44 PM · #9
i've noticed that alot of sites that allow you to upload photos actually resave them for file size (obviously resulting in slightly altered images).

i would assume that dpc does not do this, but perhaps your other site runs them through a slight "optimization" filter which sharpens them or something....who knows?

in short, once it leaves your computer, its possible that it goes through all sorts of recompression. :) or is that a :(
02/14/2005 12:18:46 PM · #10
question: whats the streaking inthe lower right corner on the dpc shot? (image #1) looks like headlights in a time lapse...but there is no such streaking in the other sites image...

and whats with the aspect ratio? did you crop?

Message edited by author 2005-02-14 12:20:08.
02/14/2005 12:24:46 PM · #11
you know what...I just noticed the steaking headlights in photo number 1. They are a little different. I did bracket those shots, wonder if somehow I uploaded the wrong one with photo number 1.

The aspect ratio was 1.5. I did not crop.
02/14/2005 12:29:07 PM · #12
Right click the pics and check properties - the DPC pic is 47k the blog pic is 192k.

then you changed something - the thumbnail is now 166k in DPC...

02/14/2005 12:30:33 PM · #13
I must be missing something because the photo look to be different sizes.

In the testing that I have done DPC does not change the photo at all.
02/14/2005 12:32:47 PM · #14
I think I might have resized a little different. The other size must be 600 on the longest side and on here its 640. Maybe thats where files may have been mixed up.
02/14/2005 12:36:05 PM · #15
Okay...im thinking that when I resized I may have used a different compression ratio for the jpeg.
02/14/2005 12:41:32 PM · #16
Also, if you upload too big of a file resolution-wise or filesize-wise DPC will resize it for you I think and it will look way crappier, so make sure you use DPC right to its limits but not over it :)
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