The following links provide content and examples related to field photography.  I have put the material into a Google Photos format.  Be sure to select the “i” icon when viewing the images since there is usually quite a bit of text there explaining the rationale for showing each of the slides.  As noted in the About section this is not intended to be a comprehensive course!

Photography for biologists (Introduction)

Cameras and equipment

Examples of cropping

Helicon Focus examples

Photography Examples

Photography Examples 2

Photography Examples 3