Expand Cut Tags

No cut tags

Oct. 1st, 2014

Glasswing

Oct. 1st, 2014 01:01 pm
guppiecat: (Default)

DSC_4921


Another view of the glasswing from yesterday. Notice all the little hairs (probably not the right name) on the wings. You can see them on other butterflies if you look. On these though, since there are no scales, it’s a lot easier to see how the wing is constructed.


You can also see how, since they live much more placid lives than the other butterflies, they must play sports to keep things interesting and to demonstrate their fitness to mate. This one is playing the role of the hoop for ÅŒllamaliztli.

guppiecat: (Default)

Cactus Mouse (Peromyscus eremicus)

This is not a great photo, for which I apologize. It is, however, illustrative of a common difficulty I face when doing my photos. This mouse is nocturnal. While fairly abundant (most rodents are doing OK), unless you like to go out in the desert and either trap them or destroy cactus to get to them, you’ll never see one. I did see some desert rats, but they move much too fast in very low light to get a photo. So this is the best you can get.


Nocturnal exhibits are tricky. I generally try to avoid flash except at the very lowest power (and for highly sensitive animals, no flash at all). However, it’s often too dark to even focus. So, to get a shot, you have two choices. You can either go for a narrow aperture to maximize your depth of field (how much of the animal is in focus) and really blast it with light, or you can open the lens up, which makes the focus plane very narrow and go with little light. Blasting an animal with light is potentially cruel to the animal (depending on how their eyes or eye-like features are constructed), can stun it into non-normal behavior (making the photo less interesting) and, in zoos, cause a lot of glass bounce. If you take the other approach, focus can be hard, as you’re not working with much light either to begin or end.


In this case, I used a flashlight technique. I used a flashlight on low power, in a glancing orientation so it didn’t hit the mouse’s eyes, to set the focus on the camera (on a tripod). Then, I set the camera to take several photos in rapid succession, and just swept the flashlight beam across the mouse fairly quickly. Then, it’s just a matter of choosing the best image.


It may not be the world’s best photo of a mouse, or even of a cactus mouse. I don’t think it stands on its own (hence this long-winded explanation). However, I think it captures the intimacy of the burrow without hurting the mouse, which was the core goal.

guppiecat: (Default)

Yellow Bellied Beetle (Pachnoda flaviventris)

Actually, the beetle is so-named because cowardice runs rampant throughout the species.

Profile

guppiecat: (Default)
guppiecat

February 2025

S M T W T F S
      1
2345678
9101112 131415
16171819202122
232425262728 

Most Popular Tags

Style Credit

Page generated Jun. 17th, 2025 05:51 pm
Powered by Dreamwidth Studios