Is there a reason for the image inconsistencies?

I was just wondering, and I'm sure some have before, why the sharp reduction in image quality when I post on this

site? Not only do I lose the brightness/contrast but a lot of detail and sharpness............heres an example,

this is the EXACT same jpeg files uploaded to different sites

 

Photo.net http://www.photo.net/photo/8001040

 

fotocommunity http://www.fotocommunity.com/pc/pc/display/14586492

 

A HUGE difference in quality IMO

 

Is there an "optimum" file size, etc. for uploading to photo.net?

I don't see much, if any, difference. Where are you seeing a "huge difference" in quality?

all over, from my end, the pnet version looks very soft, and much darker..........could it be the browser? I use mozilla

There is a good bit of difference. One of the images appears to have sharpening applied; the other does not. On opening them in PS CS3, the 'non-PN' image appears to have had a LOT of USM applied to it.

Further note. Applying Smart Sharpen at Amt=100 Rad=1 makes the two images virtually identical.

Les- both of these images are exact coming off my computer, in fact the one that appears oversharpened became so because I was trying to compensate for the softness that I saw on pnet, but they are, in fact, the exact same file. I'm not sure what is causing it though........

Screen captures<div></div>

Bob, I believe you when you say you see the same thing. What I'm asking is why am I seeing something different?

Tim, did you replace the original image with one of a different size? The size I have in the database for that image is not

the size of the image. This should never happen, so I'm trying to track down how it came about. I've manually updated the

image sizes for your image. Let me know if that improves the appearance.

I did crop the image and resubmitted it, that must be where it happened. I know usually I just refresh the page and it "updates". Let me check it now to see if that helped.

Images can take up to 24 hours to update everywhere on the site.

Thanks Josh and Jin, I'll just wait it out and see how it looks tommorrow.........

Ah, that must be what happened. There isn't a problem after all. What's going on is that you uploaded a new image, but it

can take a while for the old image to leave the cache, as Josh says. So you're seeing the old image with the new image

sizes, which makes it all fuzzy for you. Bob is seeing the new image with the new image sizes since he just happens to be

hitting a different cache server. I changed your image sizes back to reflect the new size. It may continue to look "funny"

until your cache flushes.

 

I'll look into some way we can control the cache better in the future.

I'm not sure which version of the image or which cache server I am viewing right now, but could file sizes, file dimensions and system rescaling cause some inconsistencies? These are the properties I am seeing right now.<br><br>

The default image display here on PNet : 680px X 510px (scaled to 679px X 509px) ~ file size 78.78 kB<br>

The larger size display here on PNet: 1024px X 768px (scaled to 978px X 733px) ~ file size 880.51kB<br>

On the fotocommunity site: 900px X 675px ~ file size 262 .59kB<br><br>I too at times wonder about image quality after uploading images here on PNet!

The background color is different, making the PN image darker because of the lighter background. I don't there would be much difference if the background color was the same.

Tim- I agree with you as to the brightness and how it relates to the background, I'm still concerned about the sharpness and/or contrast that I'm currently seeing on my browser.

There we go, looks good now guys, thanks for all your help...........

I'm glad I came across this thread; I seem to be experiencing the same difficulties with size differences and caches. I originally uploaded an image ( http://d6d2h4gfvy8t8.cloudfront.net/8020277-md.jpg) that appeared too large; I deleted it and replaced it with a resized version. I sent it to the Critique Forum, but there is definite apparent softness (which was commented on by a critiquer, which brought the issue to my attention) compared to the original image.

I shall wait as well and see if time solves the problem.

 

Thanks to Jin Choi for his helpful response above.