[narual]

This was on my K5, using a Sigma 10-20mm, at 10mm, with a reversal ring, and either just the smallest extension tube (without it the lens bumps into the bit beneath the on-camera flash) or the full set of extension tubes, I forget which. It was handheld, so it's not perfectly sharp, but it was one of the better ones of the eye on the US 1 dollar bill.




This one is even softer, but I know for sure this one was at 10mm and had all 3 tubes attached. It's the "UM" of the "E PLURIBUS UNUM" banner in the eagle's beak on the back of the $1 bill



I'm sure there's probably some simple thing I could do like measuring it with a ruler, but my brain is fried -- can anyone give me a rough estimate? Thanks

[carrrlangas]

The sensor is 23,7mm x 15,7mm, So if the eye was 23,7mm long you would´ve a 1:1 shot. But the eye is probably about 1mm long so I´d say you have a 24:1 magnifiaction approximately...

(right?)

[narual]

Makes sense to me. I suppose the smart thing to do would be photograph a ruler.

[carrrlangas]

Or just measure the eye with a caliper