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-   -   Some trouble with compression - opinions and suggestions welcomed! (http://www.railpictures.net/forums/showthread.php?t=10605)

NicTrain35 08-26-2009 12:19 AM

Some trouble with compression - opinions and suggestions welcomed!

I seem to be having some trouble with compression.


Opinions and suggestions welcomed!

Thank you in advance.


asis80 08-26-2009 12:49 AM

It goes hand in hand with poor image quality. I'm looking through your other shots and they look borderline the same with your rejections. Are you saving with the highest possible quality? Also, if you are redoing a shot that was rejected once before, are you starting over from scratch? That can lead to a shot looking "blocky" or looking quite poor. Still using that XT? If you can I'd invest into better glass than the original Canon 18-55. I'm still using the 18-55 and my shots aren't that horrible but they are looking pretty bad to the newer stuff on here since technology is getting better, and my equipment is starting to lack the umphf I'd like to see coming out of it.


NicTrain35 08-26-2009 12:56 AM

I'm thinking the problem could be the photo editor that I'm using (Irfanview). I should look into an Adobe Photoshop of some sort. I start the pictures over by scratch, but I've always thought that Irfanview oversharpens an image.

Yep, still got the XT and the 18-55/75-300. I've been looking into the 28-135, but am trying to keep my options open.

Thanks for your reply.


jlev 08-26-2009 12:58 AM

Bad news; I agree with asia80 about the compression part. The image quality is defintaly off on these. I'm starting to learn about compression myself.

bigbassloyd 08-26-2009 01:09 AM

Irfanview does do a hard sharpen, so what I did when I was using it for my editor, was to turn the in camera sharpening down. it also does a bad job with resizing photos, which introduces jaggies. I would suggest instead of resizing using the "set new size" option, to use "set new size as percentage of original".

Loyd L.

Flowing 08-27-2009 02:25 AM

Not to hijack the thread here (perhaps this will help your case, Nick), but I've noticed that when I save an image in Irfanview after editing and resizing, the colors seem to lose their 'punch'... things are just not quite as contrasty in the saved version, even when saving at the highest possible setting, when compared to a resized version of the original photo before it is saved.

I've been using Irfanview for a long time because all I ever do is level, sharpen, and adjust brightness, contrast, and white balance in my photos, and it's done me well for a free program. But the minor yet noticeable drop in quality even when saved at the highest setting is bugging me. Time for an upgrade to PS?

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