Tag Archives: Saint Louis Zoo – Saint Louis



I’ve been trying to years to get a good photo of a kangaroo hopping, from the side. Thus far, this is the best I can do. Straight ahead, you don’t have to track them and if you take several shots at once while adjusting focus, some of them turn out. When they’re moving side to side, they move so fast that by the time you get them in frame and focused, they’ve usually stopped hopping or the timing works out that it looks like they’re just standing on the ground.

In a zoo environment, you can’t really get a nice long shot from which to select particular animals. That’s how they do it in Australia which, alas, is not where I am.

My hope is that the upcoming Nikon d850 will be just enough faster that the shots I want will become a bit more feasible.

Water Strider

Water Strider_1_v3

If you zoom in on this photo, you’ll see that strider’s right eye is malformed. I do not know if it got crushed somehow or (more likely) if something went wrong when it was growing.

Given what I know of insect brains and how they handle image reconstitution, though, this may not actually be a drawback to how they interpret the world. The operating theory seems to be that each eye facet sends an image section to the brain, which folds them all together into a single concept of the world around them. Unlike our eyes, which have focusing mechanisms, each facet in an insect eye consists of a fixed lens (like a GoPro) connected to a single sensor cell (not like a GoPro), so it is quite possible that the insect’s brain can reconstruct a mental image of their surroundings just fine with eyes that aren’t spherical. They likely have some blind spots on the right, but it’s probably more like cataracts than total vision loss.