Thanks Andrew. Would it be a good idea to take a rear cap and cut it out to
provide some protection? Ooooo, and maybe mount a UV on it!
Is there any point to trying to stop down the reversed lens? Does the focus
ring position matter on the reversed lens?
I have a 100/2.8 and a 135/3.5. I assume primes are better. I also have a
35/2.8 and 24/2.8. So, the 24 on the 100 would be roughly the same as a 50
on a 200? What about aperture penalties? How dark is the viewfinder?
And finally, when you put that 50 on the 200, how far from the rear element
of the reversed lens is the subject?
I have a shop nearby that has used gadgets. I'll try there. Thanks for the
offer!.
-Mickey
----- Original Message -----
From: "Andrew Gullen" <andrew.gullen@xxxxxxxxxxxx>
To: <olympus@xxxxxxxxxx>
Sent: Sunday, May 23, 2004 9:28 PM
Subject: [OM] Re: Reverse lens questions
> on 2004/05/23 9:08 PM, Mickey Trageser at Gad-Zuiks@xxxxxxxxxxxxxx wrote:
>
> > I was thinking of getting a 49mm to 49mm reversing ring to put a 50/1.8
on a
> > 50/3.5. Has anyone done this? Anything I should consider before trying
it
> > (like- no, THAT won't work, or -What are you thinking, man?)? I was
curious
> > which to stop down, or both? Does TTL flash function well with this rig?
Any
> > other recommendations?
>
> I've put a 50/1.4 on a 200/4, which gives 4X Magnification.
>
> Basically this is like putting a closeup lens on. The primary lens and
> everything else functions normally. The magnification is roughly the focal
> length of the primary divided by that of the reversed lens, so the setup
you
> describe will give you 1:1 without turning the helicoid.
>
> Another way to figure it is that two 50's together make a 25, and it's now
> 2F from the film. When you rack the focus out it'll be 3F, and thus give
you
> 2X.
>
> You may want to consider putting the 50/1.4 on longer lenses to get more
> magnification, or reversing a shorter lens.
>
> Careful you don't scratch the rear element of the reversed lens.
>
> Reversing rings can be hard to find - a store had some real cheap (about
CDN
> 2), so if you're interested I could get one and mail it.
>
> Andrew
>
>
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