Seems that some bad code was added to forum software and images post to whatever sizes. Web browser doing some scaling to final images will always cause images to look awful.
Images in the post are really:
800x542
407x600
800x542
822x944
What Fred Miranda forum software things them to be:
994x674
674x994
994x674
822x994
HTML from page:
<img width=994 height=674 border=0 alt=\"This image is copyrighted by the owner\" src=\"http://img542.imageshack.us/img542/9300/img5340web.jpg\"><br />
<br />
ZE50/2@2<br />
<img width=674 height=994 border=0 alt=\"This image is copyrighted by the owner\" src=\"http://img39.imageshack.us/img39/559/img5324web.jpg\"><br />
<br />
CV125/[email protected] (pretty darn sharp)<br />
<img width=994 height=674 border=0 alt=\"This image is copyrighted by the owner\" src=\"http://img811.imageshack.us/img811/3045/img5335web.jpg\"><br />
<br />
CV125/[email protected] first tree pano (~90MP) that actually worked more or less<br />
<img width=822 height=994 border=0 alt=\"This image is copyrighted by the owner\" src=\"http://img11.imageshack.us/img11/4879/img5264img5281web.jpg\">
In addition to this I have noticed that images with odd number of pixels (pixel size ending to 1, 3, 5, 7 or 9) will always cause scaling as well. For example I have for years done all my web images to 975px on longest side, now for some time Fred Miranda forum started to scale them to 974px, which will ruin how the images look (whole image is scaled and image becomes blurry).
CV125/[email protected] first tree pano (~90MP) that actually worked more or less
same images posted without img tags (causes there to be HUGE space between images, not very useful unless posting just one photo and even then causing people to need to scroll much more when browsing image threads)