Focal Lengths, F Stops, and Tripods, Oh My
This is a post about gear (particularly lenses) and why I chose it (them) to make a specific image. I teach a digital photography class at a nearby college and one of the things I cover in that class is the effect that the angle of view (the angle of coverage of the lens) can have on how the image is perceived by viewers. There are four categories: broad landscapes (wide angle), intimate landscapes (normal to short telephoto), compressed landscapes (mid-long telephotos) , and macro/close-ups (macro lens).
This image of a small wash full of water was made in the Rio Puerco Valley after a monsoon rain. It is an example of a broad landscape; the depth of the image from foreground to horizon is exaggerated. I used a wide angle zoom with an aperture of f 22 to give me the depth of field I needed to keep everything sharp.
Nikon D800, Nikkor 17-35mm f2.8 @ 17mm; 1/30sec, f22, ISO 100, tripod
I made this image in Blue Canyon on the Hopi Reservation in northern Arizona. It is an intimate landscape; the area covered, side to side and front to back, is relatively small compared to the broad landscape. There is a feeling of immediacy or closeness about the image, as if it could fit in your living room. I used a medium telephoto zoom set at an aperture of f 11.
Nikon D700, Nikkor 28-70mm f2.8 @ 35mm; 1/25sec, f11, ISO 100, tripod
Using a telephoto lens causes an image to compress, so distant objects seem closer. A telephoto lens does not exaggerate the depth of the image the way a wide angle lens does. Instead, it causes elements to flatten, making the distance from foreground to horizon appear shorter, and making the elements in between appear more closely grouped.
Nikon D700, Nikkor 80-200mm f2.8 @ 200mm; 1/25sec, f8, ISO 100, tripod
There is something about the the world that lies right at our feet that is compelling. Although it is normally common and quite ordinary, given a little attention and a skilled eye it can become extraordinary. This is the world of close-up or macro photography. There is no need to travel to exotic locales when there is an unending source of interesting subjects to be found in your own back yard.
Nikon D300, Nikkor 105mm f2.8 macro; 1/60sec, f8, ISO 200, tripod.