Camera Used As A Microscope

M II A II R II K · #1 Posted **Mar 24, 2012, 9:34 PM**

400mm lens looking through a reversed 17mm lens.

Put specimen on the lens of the flashlight. Move back and forth, side to side until you find the sweet spot.

Onion

Blood

flar · #2 Posted **Mar 26, 2012, 5:59 PM**

I believe the magnification formula for stacked lenses is

magnification = focal length of primary lens / focal length of stacked lens

For this setup: 400/17 = 23.5X magnification

I recently picked up a coupling ring ($4 on ebay) so I can stack my 200mm and 50mm primes. That will give me 4X magnification but I haven't got around to using it yet. The depth of field is so shallow and focus distance so close, it will be very difficult to get usable shots of anything but stationary subjects.

LSyd · #3 Posted **May 8, 2012, 4:50 PM**

they had a DSLR hooked up to a dental microscope yesterday for my root canal.

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Okayyou · #4 Posted **May 8, 2012, 7:13 PM**

I tried with my 500 and 17 for a 29x magnification. Really hard to get something in focus. I'll try again when I have more time and patience. Wonder if my 10mm fish eye would work as the revers lens, 50x magnification would be crazy.