Dear John, Frank, and others
I made a 49 to 55 thread adapter from two Cokin filter
holder rings glued together with 5 minute epoxy.
I've got the 200 f4, the 50 f1.4, and a dead medfly!
Thank you John Gardner --- I accept the challenge !
Hank Hogan <flzhgn@xxxxxxxxxxxxx>
PS Frank, I want to drill a hole in my 100 Yen coin --
imitation is the highest complement !
John Gardner wrote:
>
> Frank,
>
> I have tried this stacking lens technique several times recently. I
> rather like it. I bought two 49 - 52mm step up rings and then used
> sellotape to fasten them together 52-52 ends. This gives you a
> double-ended 49mm fliter thread.
>
> I then used a 50mm f/1.4 reversed onto a 135mm f/3.5. This gives roughly
> 2.7 times magnification (50/135). I tried it with a 50mm f/3.5 macro
> reversed onto it, but this displayed bad vignetting in the view finder.
> You could get rid of the vignetting by adding more extension behind the
> 135mm lens.
>
> The beauty of this set up is that it is cheap and also you can use the
> prime lens to control DOF, exposure etc. Just leave the reversed lens
> wide open. For illumination I used a T32 attached to a curly .6m
> cord and fired it in from the side. This gives a lovely glancing sideways
> light which puts texture into your subject. You could use two flashes at
> 45 degrees on a macro bracket too. No double cables are needed and its
> super sharp. However, DOF is critical and you need to be sqaure on to
> your subject to get it all in focus. Its excellent for photographing
> coins and butterflies wings (med flies too, I suspect Hank).
>
> Play around with various combos. I'd like to try a 50mm reversed onto a
> 200mm for 4x mag but I haven't got a). a 200mm and b). a 55mm filter
> threaded standard lens.
>
> Regards
>
> John.
>
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