Размеры изображений и их стоимость (Dreamstime, Fotolia, iStockphoto)

Dreamstime

http://www.dreamstime.com/thread_26512
т.е. для того, чтобы получить максимальную сумму за изображение на Dreamstime, оно должно быть не менее 12МР

Fotolia

Royalty free licenses	Icons	Price	Output Resolution	Condition
XS Standard		XS	≥ 0.12 MP	Resolution ≥ 3,7
S Standard		3* XS	≥ 0.48 MP	Resolution ≥ 3,7
M Standard		5* XS	≥ 1.9 MP	Resolution ≥ 3,7
L Standard		7* XS	≥ 3.7 MP	Resolution ≥ 3.7
XL Standard		8* XS	≥ 7.8 MP	Resolution ≥ 7.8
XXL Standard		10* XS	≥ 15 MP	Resolution ≥ 15

http://www.fotolia.com/Info/Contributors


IStockPhoto

Size	Pixels*	Approximate Print Size*
XSmall	300x400	1"x 1.5" @ 72dpi
Small	600x800	2"x 3" @ 72dpi
Medium	1200x1600	4" x 5" @ 300dpi
Large	1920x2560	6" x 8" @ 300dpi
XLarge	2800x4200	9" x 14" @ 300dpi
XXLarge	3300x4900	11" x 16" @ 300dpi
XXXLarge	3700x5600	12" x 18" @ 300dpi

http://www.istockphoto.com/faq.php --> What file sizes are created when I upload my photos?



http://www.microstock.ru/forum/showpost.php?p=303346&postcount=5011