To assist cropping Photos to a "Golden Section" or the "Rules of Thirds", I've made a few Illustrator files than can be placed into Photoshop as Smart Objects. Once inside Photoshop they can be scaled, rotated and flipped as you desire, afterwards used as a guide for the cropping-tool. Feel free to download these guides.
If you need you photos printed you can use the tables below to figure out how many pixels you need, whether you need them printed at 150 or 300 DPI. The first table (in Green) is for the 2/3 ratio utilized by Nikon/Canon, whereas the 2nd table (in Blue) is for the 3/4 ratio utilized by Olympus.
2/3 ratio utilized by Nikon/Canon |
Format
|
Size (mm)
|
Ratio
|
150 DPI
|
300 DPI
|
9 x 13 cm
|
89 x 127 mm
|
2/3
|
526 x 750 pixels
|
1062 x 1500pixels
|
10 x 15 cm
|
102 x 152 mm
|
2/3
|
602 x 898 pixels
|
1204 x 1796 pixels
|
13 x 18 cm
|
127 x 178 mm
|
2/3
|
750 x 1051 pixels
|
1500 x 2102 pixels
|
13 x 19 cm
|
127 x 190 mm
|
2/3
|
750 x 1122 pixels
|
1500 x 2244 pixels
|
15 x 21 cm
|
152 x 216 mm
|
2/3
|
898 x 1276 pixels
|
1798 x 2552 pixels
|
20 x 30 cm
|
203 x 305 mm
|
2/3
|
1199 x 1801 pixels
|
2398 x 3602 pixels
|
40 x 60 cm
|
406 x 609 mm
|
2/3
|
2397 x 3596 pixels
|
4795 x 7192 pixels
|
50 x 75 cm
|
508 x 762 mm
|
2/3
|
3000 x 4500 pixels
|
6000 x 9000 pixels
|
3/4 ratio utilized by Olympus |
Format
|
Size (mm)
|
Ratio
|
150 DPI
|
300 DPI
|
10 x 13 cm
|
95 x 127 mm
|
3/4
|
561 x 750 pixels
|
1122 x 1500 pixels
|
11 x 15 cm
|
111 x 152 mm
|
3/4
|
656 x 898 pixels
|
1312 x 1796 pixels
|
13 x 17 cm
|
127 x 178 mm
|
3/4
|
750 x 998 pixels
|
1500 x 1996 pixels
|
15 x 20 cm
|
152 x 203 mm
|
3/4
|
898 x 1199 pixels
|
1796 x 2398 pixels
|
20 x 27 cm
|
203 x 270 mm
|
3/4
|
1199 x 1594 pixels
|
2398 x 3188 pixels
|