Photo Size

Photo Type	Size	Ratio	300 dpi		150 dpi
			Recommended resolution	Digital Size (megapixel)	Recommended resolution	Digital Size (megapixel)
Passport	35mm x 45mm	7:9	413 x 531	0.219	207 x 266	0.055
3R	3.5" x 5"	7:10	1050 x 1500	1.575	525 x 750	0.33975
4R	4" x 6"	2:3	1200 x 1800	2.16	600 x 900	0.54
5R	5" x 7"	5:7	1500 x 2100	3.15	750 x 1050	0.7875
6R	6" x 8"	3:4	1800 x 2400	4.32	900 x 1200	1.08
8R	8" x 10"	4:5	2400 x 3000	7.20	1200 x 1500	1.80
S8R	8" x 12"	2:3	2400 x 3600	8.64	1200 x 1800	2.16
10R	10" x 12"	5:6	3000 x 3600	10.8	1500 x 1800	2.70
S10R	10" x 15"	2:3	3000 x 4500	13.5	1500 x 2250	3.375
A5	148mm x 210mm		1748 x 2480	4.335	874 x 1240	1.0838
A4	210mm x 297mm		2480 x 3508	8.7	1240 x 1754	2.175
A3	297mm x 420mm		3508 x 4961	17.4	1754 x 2480	4.35

 
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