Notes

Outline

Why Crop To improve composition To change aspect ratio for printing To change angle To correct perspective

Why Resize To change output size To increase size for printing To reduce size for e-mail or displaying on computer or TV

How to resize Adobe claim best results during RAW conversion

Raw conversion gives limited choice of sizes

Resize dialogue gives full control

What does it all mean Pixel dimensions can only be changed if resample image is selected. Allows you to change the actual file size. Bicubic smoother best option for resampling.

What does it all mean Document size and resolution.This gives the output size. If resample image is not selected it can be used to specify the output size for printing, the resolution will change as the output size changes. If resample image is selected the resolution can stay the same or change when the image size changes.

What does it all mean Scale styles only applies if you have layers with styles applied. Constrain proportions is nearly always required as it prevents distortion of the aspect ration of the picture.

Improving composition

When cropping box can be free form or specified ratio

Using the width and height This can be used to keep aspect ratio the same as the original picture It can also be used to create a crop to match a specific output size For example 800 x 600 screen, 6x4 inch print 7x5 inch print.

Typical Aspect Ratios Compact 4x3 Print sizes 4x3 8x6 12x9 Slr 3x2 Print sizes 3x2 6x4 9x6 12x8 15x10 Common print size 6x4 means cropping for compact Common print size 7x5 means cropping for both formats

Straightening a picture Select an area to correct

Move cursor outside selection and rotate selection

Then crop

Correcting perspective

Select area of picture to use

Check perspective box and move edges to align with verticals

Then crop

You may need to use image size and uncheck constrain proportions to correct result