Sorry, I'm not through this whole thread yet, so forgive me, if this has already been mentioned.
That never was a problem with regular-sized images, only with this large one. Again, I can and probably will make max zoom-out far enough for this particular image, but there will always be larger ones.
How about making it dependent on the canvas size?
That's true. It seems to have a top section for choosing what part of the picture to export; and a bottom section including dpi and resolution boxes (and on my machine, the "Height" part seems to be greyed out).
Why not have a further section for file type, and grey out the resolution boxes if they are not relevant?
How about having one export dialogue with tabs for pixmap and vector export? Within those notebooks you'd select the exact filetype like png, jpg, tiff or eps, pdf, ps, ai... This seems logical and has the advantage of being able to have the dialogue opened all the time. I totally agree with bulia that having to go through the save dialogue all the time is plain crazy. Especially for web development the export dialogue as is is real nice.
David