spacepilot
Well-known member
Last night I played with a pair of 8x32 bins and a pair of 8x42 bins on my front porch. I was trying to read the license plate of a neighbor's car illuminated by another neighbor's garage lights. To my surprise, both pairs provided about the the same level of details for me to guess the plate number. Now I'm wondering if my dilated pupils are large enough to take advantage of the larger exit pupil size of the 8x42.
To measure my dilated pupil diameter, I'm thinking about staying outside after dark. After a while (I don't know how long it takes for human eyes to fully dilate), I'll hold up a ruler with mm markings up to my eyes, and ask my wife to take a picture with flash. The focusing of my point-n-shoot camera uses a red led to illuminated the object, I hope that doesn't cause my pupils to shrink. So, is that a reasonable way to measure the pupil diameter in the dark?
Ning
To measure my dilated pupil diameter, I'm thinking about staying outside after dark. After a while (I don't know how long it takes for human eyes to fully dilate), I'll hold up a ruler with mm markings up to my eyes, and ask my wife to take a picture with flash. The focusing of my point-n-shoot camera uses a red led to illuminated the object, I hope that doesn't cause my pupils to shrink. So, is that a reasonable way to measure the pupil diameter in the dark?
Ning