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Macro with Carl Zeiss and 40cm extension tube
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PostPosted: Sat Nov 28, 2009 5:26 pm    Post subject: Macro with Carl Zeiss and 40cm extension tube Reply with quote
Pictures of butterfly wing structure using Carlz Zeiss Sonnar 135mm and 40cm long macro ring (cardboard tube).









PostPosted: Sat Nov 28, 2009 7:52 pm    Post subject: Reply with quote
Astonishing that you could control vibration with that
contraption at that magnification!! Great result!
(don't try that with yout MTO lenses.... Very Happy )


PostPosted: Sat Nov 28, 2009 7:57 pm    Post subject: Reply with quote
I have tried it already!!! Very Happy


PostPosted: Sat Nov 28, 2009 8:10 pm    Post subject: Reply with quote
Funny enough I tried something similar too once. I needed to be far away from a very shy animal, but wanted to have a high magnification. I ended up using a catoptic system of 800mm focal length and still had about 3x magnification (this is called "Long Working Distance Microscopy") - so not really a joke.


PostPosted: Sat Nov 28, 2009 8:20 pm    Post subject: Reply with quote
wow! that's great details!
40cm Shocked how much magnification do you reach with that ?


PostPosted: Sat Nov 28, 2009 8:41 pm    Post subject: Reply with quote
poilu wrote:
wow! that's great details!
40cm Shocked how much magnification do you reach with that ?


Rough estimation: 2 x focal length gives 1x. so since his Sonnar has 135mm he would end up at 2-3x depending how long the built in helicoid is. SO what we see must be crops, since that high magnification as shown won't be possible filling full format.
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