Digital Photography

Saturday, March 25, 2006

Cropping and Resizing

Two peas photo lab wants:

Minimum pixel count to be :

640 X 480 - wallet - 2x2 - 3x3 - 4x4
1024 x 768 - 4x6
1152 x 864 - 5x7
1600 x 1200 - 8x10
2000 x 1500 - 11x14
3000 x 2000 - 24x36

If your camera loads to the computer at 72 ppi then you need to resize to 300 ppi for most online printers - you can do this in Resize - turn resample off.

With my Drebel it loads to the computer at:
72 ppi ( Pixels per inch )
3456x2304 pixel count
48 x 32 inches ( turn on your rulers)

When I go to ( PSE4 ) Image - Resize - Image size - Resample off - and change the ppi from 72 to 300 - the pixel count goes to 3456x2304, the inches go to 11.52x 7.68.

Now that I'm at 300 ppi - go to crop and put in 4x6 or 5x7 and crop. If I want three different shape crops I crop three different copies of the image and label them - 4 - 5 - 8 so I know if the were cropped to be 4x6 - 5x7 - 8x10. ( When using the crop tool put in 4.0 - 6.0 etc )

After cropping go back and check that you still have above the minimum pixel count. Cropping won't change the 300 ppi but it will chop off pixels on your pixel count. If you do a major crop you may drop your pixel count too far. There are times to crop before resize and times it is better to crop after resize. If your pixel count is too low that is another problem and a different subject.

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