Always use the best definition setting on your digital camera : The final quality of your photo prints will depend on that file definition.
Our Fujifilm Minilabs printing at 300dpi. Our quality gauge is based on 150dpi

Format Optimal qualityOptimal quality SufficientSufficient BorderlineBorderline InsufficientInsufficient
3½ x 5 '' Above
526 x 750 pixels
From 526 x 750 pixels
to 438 x 625 pixels
From 438 x 625 pixels
to 350 x 500 pixels
Under
350 x 500 pixels
3¾ x 5 '' Above
561 x 750 pixels
From 561 x 750 pixels
to 468 x 625 pixels
From 468 x 625 pixels
to 374 x 500 pixels
Under
374 x 500 pixels
4 x 6 '' Above
602 x 898 pixels
From 602 x 898 pixels
to 502 x 748 pixels
From 502 x 748 pixels
to 402 x 598 pixels
Under
402 x 598 pixels
4.4 x 6 '' Above
656 x 898 pixels
From 656 x 898 pixels
to 546 x 748 pixels
From 546 x 748 pixels
to 437 x 598 pixels
Under
437 x 598 pixels
5 x 5 '' Above
750 x 750 pixels
From 750 x 750 pixels
to 625 x 625 pixels
From 625 x 625 pixels
to 500 x 500 pixels
Under
500 x 500 pixels
6 x 6 '' Above
898 x 898 pixels
From 898 x 898 pixels
to 748 x 748 pixels
From 748 x 748 pixels
to 598 x 598 pixels
Under
598 x 598 pixels
5 x 6.6 '' Above
750 x 998 pixels
From 750 x 998 pixels
to 625 x 832 pixels
From 625 x 832 pixels
to 500 x 665 pixels
Under
500 x 665 pixels
5 x 7 '' Above
750 x 1051 pixels
From 750 x 1051 pixels
to 625 x 876 pixels
From 625 x 876 pixels
to 500 x 701 pixels
Under
500 x 701 pixels
5 x 7.4 '' Above
750 x 1122 pixels
From 750 x 1122 pixels
to 625 x 935 pixels
From 625 x 935 pixels
to 500 x 748 pixels
Under
500 x 748 pixels
6 x 8 '' Above
898 x 1199 pixels
From 898 x 1199 pixels
to 748 x 999 pixels
From 748 x 999 pixels
to 598 x 799 pixels
Under
598 x 799 pixels
6 x 8½ '' Above
898 x 1276 pixels
From 898 x 1276 pixels
to 748 x 1063 pixels
From 748 x 1063 pixels
to 598 x 850 pixels
Under
598 x 850 pixels
8 x 8 '' Above
1199 x 1199 pixels
From 1199 x 1199 pixels
to 999 x 999 pixels
From 999 x 999 pixels
to 799 x 799 pixels
Under
799 x 799 pixels
8 x 10 '' Above
1199 x 1500 pixels
From 1199 x 1500 pixels
to 999 x 1250 pixels
From 999 x 1250 pixels
to 799 x 1000 pixels
Under
799 x 1000 pixels
8 x 10½ '' Above
1199 x 1594 pixels
From 1199 x 1594 pixels
to 999 x 1329 pixels
From 999 x 1329 pixels
to 799 x 1063 pixels
Under
799 x 1063 pixels
8 x 12 '' Above
1199 x 1801 pixels
From 1199 x 1801 pixels
to 999 x 1501 pixels
From 999 x 1501 pixels
to 799 x 1201 pixels
Under
799 x 1201 pixels
passport photos Above
207 x 266 pixels
From 207 x 266 pixels
to 172 x 221 pixels
From 172 x 221 pixels
to 138 x 177 pixels
Under
138 x 177 pixels