Currently we have set the maximum photo size too 800x800px, this helps keep our Bandwidth usage down.
We can increase this a little if needed.
The problem with modern high pixel cameras/phones is they are producing original images in excess of 6000 pixels wide
and file sizes touching 20mb, most photos will need re-sizing for use on forums.
I find it easier to link to free external photos sites and It helps our site usage, I use Flickr and once uploaded its easy, hit the button "view all sizes", select your size, right click on photo.
select "copy image address", click on the insert image tab in your post and paste the address between the brackets.
this image is 800 pixels wide:
Happy to up the size limit on the forum if needed.
Thanks
Tony