Reversed lens plus extension tubes

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JP1422
Posts: 2
Joined: Tue Mar 17, 2015 6:10 am
Location: York

Reversed lens plus extension tubes

Post by JP1422 »

Can anybody advise whether it is possible to use a 50mm reversed lens attached to extension tubes and if ok what magnification can I expect?

Regards John
JP1422

austrokiwi1
Posts: 338
Joined: Sun Sep 14, 2014 10:53 am

Post by austrokiwi1 »

With a Schnieder Kreuznach 50mm F2.8(makro Iris) unreversed on my bellows I get a magnification range of 1.2-1 through 3.6-1. That particular lens only gets a very slight increase in magnification when reversed( using my set up). A minolta MC 50mm F3.5 performs similarly. Reversed, according to the manual, I am supposed to be able to get almost 4 Times magnification. However, I have found that the close working distance combined with the diametre of the rear of the lens ( minolta) makes lighting the subject difficult. I recently obtained a led microscope ring light and that has made the lighting much easier

I use a bellows but extension tubes will do the same job I would expect you will need more than one set of tubes as the maximum extension on my bellows is 190mm.
Still learning,
Cameras' Sony A7rII, OLympus OMD-EM10II
Macro lenses: Printing nikkor 105mm, Sony FE 90mm F2.8 Macro G, Schneider Kreuznach Makro Iris 50mm , 2.8, Schnieder Kreuznach APO Componon HM 40mm F2.8 , Mamiya 645 120mm F4 Macro ( used with mirex tilt shift adapter), Olympus 135mm 4.5 bellows lens, Oly 80mm bellows lens, Olympus 60mm F2.8

JP1422
Posts: 2
Joined: Tue Mar 17, 2015 6:10 am
Location: York

Post by JP1422 »

Thank you
JP1422

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