"Example" (link below) so far is the only theme I can find with support for 1000px images. Some themes totally prevent photo size selection, and other themes break when chosing a size larger than 595px.
I require a theme that can support images (landscape and portrait) of at most 1000px.
Any suggestions? I do not have the skills to make my own theme. This is a personal photo site, so I cannot afford to purchase a theme.
Why so large an image? If I visit your site and view a 1000px high portrait image the page will not fit on my screen. And I have quite a high resolution screen 1920x1200. Most screens will be max of 1080px because of the dominance of HD LCD blanks.
Anyway, I doubt you will find such a theme so I guess you are out of luck--no skills and no money. Probably best to change yor expectations.