Posted by rob ashcroft on July 12, 2012 at 3:16 AM
Darwin Wiggett's instructions http://www.naturephotographers.net/articles0509/dw0509-1.html Gives instructions on posting images at NPN. But one thing I've noticed is if and image is posted withing the 720px long side limit, it stays as a JPEG (as uploaded) and the size often seems to exceed the 200kb limit. Here's an example.
However, when an image exceeds the size limit it gets rescaled down to 720px and it gets saved as a GIF file. The file size of these files is always 1.32KB (1,300 bytes) which seems a very low figure to me. Is this the way it's meant to work? Why such a small file? Does that affect displayed image quality? Here is an example.
Rob - That GIF is a clear GIF overlay meant to discourage right-clicking and saving of images. It's put on images that are uploaded to NPN (rather than being linked to). The image you're seeing isn't changed in any way, and the NPN server won't actually let you upload anything larger than 720, so there's no re-sizing going on.
I actually thought the GIF overlay was done on the linked images as well, but apparently it's not.
Posted by rob ashcroft on July 12, 2012 at 12:40 PM
OK, David, that makes sense. Thank you for the info.
Discussion
3 replieshttp://i250.photobucket.com/albums/gg259/carregwen/Capture_large.jpg
However, when an image exceeds the size limit it gets rescaled down to 720px and it gets saved as a GIF file. The file size of these files is always 1.32KB (1,300 bytes) which seems a very low figure to me. Is this the way it's meant to work? Why such a small file? Does that affect displayed image quality? Here is an example.
http://i250.photobucket.com/albums/gg259/carregwen/Capture2.jpg
Both shots are in the Flora gallery.
I actually thought the GIF overlay was done on the linked images as well, but apparently it's not.
Rob