Yeah - your php memory allows about this size.
Thumbs need a little bit less - detail images a little bit more.
this is why some images have thumbs but no detail image (But you are really close to the borader then...).
About the link - you can't. TWG does allow this - but only if the images are smaller than the size limit. Directly linking does not makes sense for big images... would be way to slow for 3 mb for each image.
solutions
- batch resize (cam2pc - Image Browser
)
- more php memory.
- install image magic - use the latest dev build. But I only use image magic for images in the cache - means e.g. fullscreen images still use gdlib and need a lot of memory.
/Michael