Monthly Archives: July 2011

bug walk photo 3

Twelve Spotted Skimmer, Libellula pulchella 

7-3-2011, 2:52 p.m.

exposure: 1/400 sec

f/stop: 8

focal length: 200 mm (with 68mm of extension tubes)

ISO: 800


bug walk photo 2

Virginia Ctenucha Moth, Ctenucha virginica 

7-3-2011, 2:19 p.m.

exposure: 1/60 sec

f/stop: 7.1

focal length: 130 mm (with 68mm of extension tubes)

ISO: 800

bug walk photo 1

When looking for bugs (OK, technically insects and arachnids) flower gardens present an unparalleled photo opportunity. After a while butterflies begin to tolerate your presence – a flower banquet is easily worth a human with a camera.

Painted Lady, Vanessa cardui

7-3-2011, 2:36 p.m.

exposure: 1/249 sec

f/stop: 9

focal length: 190 mm (with 68mm of extension tubes)

ISO: 800

7-3-2011, 2:34 p.m.

exposure: 1/600 sec

f/stop: 9

focal length: 300 mm (with 68mm of extension tubes)

ISO: 800

Daddy Longlegs

I am continuing to experiment with macro photography by using extension tubes, a medium JOBY GorillaPod with a Monfrotto ball head, and careful manual focusing using the zoom on my lenses as opposed to the focus ring. When using extension tubes it is easiest to set the focus ring and then zoom to focus. The reason for it is simple – if the focus ring is used then the camera has be a very specific distance from the subject, but if the zoom is used to focus then the camera can be positioned over a broader range of distance from the subject, which equals flexibility.

Another interesting thing about macro photography with extension tubes is that the subject is roughly the same size no matter if the camera lens is at 270 mm or 70 mm – the only variable is how far away the front of the lens is from the subject. The extension tubes determine how much of the frame the bug or spider is going to occupy and the lens determines how close or far away you need to be from the bug or spider: more ext. tube = greater magnification, longer lens = farther distance from subject.

I absolutely love this picture. I suppose another interesting picture would be if Sarah had photographed me taking it – lying prone on ground stretched out behind a camera/tripod/cabled remote shutter while donning a bucket hat and a grin.

And at 100% crop:

6-26-2011, 4:22 p.m.

exposure: 1/80 sec

f/stop: 10

focal length: 110 mm (with 68mm of extension tubes)

ISO: 800