General > General Technical Chat
Best lens for macro electronic components
Someone:
--- Quote from: mawyatt on August 10, 2022, 04:10:07 pm ---A couple important things to consider when working at macro levels, the subject to lens distance is important because the further the lens front surface the better because of getting "quality" lighting around the subject. Others are vignetting and image edge distortion and focus.
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Hitting all the key points! One option (not mentioned yet?) for occasional use, reverse mount a cheap manual focus (+manual iris all the better) lens. Yes it will have tiny working distance, lots of distortion, and a curved focal plane, but it can do impressive magnification on the cheap.
mawyatt:
Yes, very effective technique!! Another similar technique that uses "regular" lens to achieve macro levels is lens stacking. Here a shorter Focal Length lens is mounted on the front of a longer FL lens, the effective magnification is the FL ratio.
Best,
Zucca:
mawyatt your setup reminds me that there is always a bigger fish out there.
Let me collect the jaw on the floor now...
magic:
--- Quote from: jpanhalt on August 10, 2022, 09:14:57 pm ---I failed to mention that as a retired pathologist I have several microscopes. I made an adapter for my CoolPix 990 to my binocular/dissecting Nikon microscope. It works too. I want something simpler, uses modern memory, takes less space, and has more uses. 60 years of junk accumulated over a career takes up a lot of space. I am trying to cut back to save my hiers the pain.
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I haven't tried it, but I'm skeptical regarding the ability of APS/FF cameras to pick up eyepiece images like a compact. Even some larger compacts vignette.
The alternative is dedicated photographic eyepieces for the scope which (AFAIK) mount on the camera in place of the lens or direct projection of primary image onto the sensor. The latter requires fully color-corrected objectives, in addition to suitable mechanical adapters.
--- Quote from: jpanhalt on August 10, 2022, 08:56:05 pm ---I am not into $>5K equipment (2022 equivalent) anymore, but find the Z50 attractive. It comes in a kit with a 16-50mm lens. Any opinions on that lens' macro abilities. The cheapest Z-macro seems to be the MC50/f2.8 at $650.
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Well, yes, Z is a new system ::) There should be an option to adapt Nikon DSRL lenses onto it that you may consider.
Regarding the kit, I'm sure there are reviews out there and there are official specs. Nikon says 20cm minimum focusing distance, and likely that's at 16mm and 50mm is worse. FWIW, photographyblog.com says maximum magnification is 0.2x.
magic:
--- Quote from: mawyatt on August 10, 2022, 10:40:52 pm ---Yes, very effective technique!! Another similar technique that uses "regular" lens to achieve macro levels is lens stacking. Here a shorter Focal Length lens is mounted on the front of a longer FL lens, the effective magnification is the FL ratio.
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I forgot to mention that this principle also applies to those closeup addon lenses like Raynox. If the main lens is focused at infinity, magnification is exactly the FL ratio. If the main lens can focus closer, it may be somewhat more but usually not much more.
It follows that even with the shorter 125mm Raynox, it takes at least some 100mm for unity magnification.
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