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Re: [OM] Cute Gear? (+ pix) [was Fun read on early lens designs]

Subject: Re: [OM] Cute Gear? (+ pix) [was Fun read on early lens designs]
From: Wayne Shumaker <om3ti@xxxxxxxx>
Date: Fri, 10 Mar 2023 08:08:40 -0700
At 3/8/2023 11:00 PM, Cuddly Extensible wrote:
>On 3/8/2023 2:36 PM, Mike Gordon via olympus wrote:
>>Great bubble bokeh.  Doesn't seem likely it reaches infinity on the bellows.
>Actually, it focuses past infinity. The bellows has a lock, so one could set 
>it up for end of helicoid infinity focus, is desired.
>>Can your attach it sans bellows too?
>Physically, yes, optically, no. It turns out that this lens has a secret. It 
>is possible to remove the back end tube, just behind the focusing mechanism, 
>and re-attach the mount, making it a short mount lens. According to the site I 
>found, Novoflex even made a bellows attachment for it.
>This one came without the back end tube. I thought about getting another, then 
>realized that the five foot close focus would make it less than useful for 
>most of what I want it for.
>>Seems it is likely a Tessar design.
>Dunno. It does have the same number of reflections, in a similar pattern, to 
>those of a CZJ 50mm Tessar.
>>Nice acquisition for the alt.dot images especially with included bellows.
>Yeah, the bellows really make it, unlike using extension tubes on old lenses 
>with long CF distances. There was dirt in the rack that made it stiff, but 
>cleaned up. it's pretty nice. No Oly bellows though.
>Extensible Moose

Nice. Curious, does the back end tube come off or is replaceable between a 
longer one and a shorter one? I saw one of these available with a longer tube.

Now to just make the frog blow the bubbles. Did you do much post processing? I 
assume the contrast is low for the lens.

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