Chris, have you had any thoughts about the risk of adding CA when the na is reduced?

If I compare the Mitu 20x na 0.42 with the Mitu SL 20x na 0.28 I see what you talking about here, but my own concern is also the increasing amount of CA that comes when the na is reduced.

Regards,
Conny

T2 mount 42mm pitch 0.75mm might fit this application. Nikon F to T2 or (M42 to T2)*> 42mm to 43mm -> Raynox -> 49mm to T2 -> T2 extension tube - T2 to M42 or **> M42 to RMS or (M42 to M26 36tpi, M42 to M25) - microscope objective * Or a T2 adapter that fits your mount **T2 to RMS if a microscope ob...

I think this is a good sourse to information about optical systems, it has some answers to questions that been asked here.

Lenses and Geometrical Optics
http://www.olympusmicro.com/primer/ligh ... shome.html

Regards,
Conny

As others have said here the Mitutoyo 20x na 0.42 wd 20mm has better resolution than the Mitutoyo 20x SL na 0.28 wd 30.5mm. So if I have to chose I would go with the Mitutoyo 20x na 0.42. BTW, I enclose a test image taken with the Mitutoyo 20x SL na 0.28. Some data of the Mitutoyo Infinity-Corrected...

Thanks for your very kind comments guys!, much appreciated :D NU, thanks for pointing out my wrong naming of the species in my first post of this thread, I have deleted that now. I don't have any setup images of this photosession left. And yes it hurts to be bitten by a Horse fly or Deer fly :( , bu...

Conny, If you attempt this, I hope you'll document the effort and report on it. It may be very educational for the rest of us. Cheers, --Chris Unfortunately the seller decided not to sell the second broken objective, so I had to abort that project to build one good of two bad ones. But I have just ...

Dear Conny, Is it allowed to use the imagine for a newsletter on te ecoloy of horse flies? Would be great. Please contact me? Piet Piet you got a positive answer to your question in a PM. Here are two more images from last season (2012) of Horse flies. Regards, Conny http://farm9.staticflickr.com/8...

I think it should be possible to inspect the innards without taking it apart. The front and rear elements can be inspected with a 10x loupe, and you should be able to put the objective on a scope and "dive" into it by focusing up and down with a phase telescope. If everything looks clean then the s...

Are you talking about the "outer" parts of a BD version, or actual disassembly of the optics? I thinking of the M-plan series. I have an objective that is "soft" and I would like to take a closer look at the optics inside and if possible clean them. I also recently saw an objective with a broken fr...

Hi!

I wonder if anyone has experience and tips regarding how to take apart a Mitutoyo microscope objective?

Do I need some special tools to do that.?

Better to ask, rather than break it.


Regards,
Conny

Well done Chris!

I like the first one.........

Even if I can't see these stereos I think that picture also would be nice to be presented in stereo.

Regards,
Conny

Interesting!

I've had some thoughts about this topic, so for my own curiosity it would also be interesting to see this test done with a DSLR without an anti aliasing filter.

Like the Nikon D800E, Canon EOS 20Da or Canon EOS 60Da.

Regards,
Conny

I got my copy of the book today and the book is full of amazing and inspiring macro pictures.

The pictures speak their own language and I think you can buy the book just for John's fantastic photographs.

I also found it nice to see the images in print.

Regards,
Conny

I want to congratulate Mr John Halmén for his recently released book named Kryp.

The book Kryp contains text by Lars-Åke Janzon and photographs of John Halmén and is written in Swedish.

ISBN: 9789113040639

http://www.bokus.com/bok/9789113040639/kryp/


Regards,

Conny

Fred, I don't think there are many metal lens caps around and plastic ones are far from rigid. Harold I have a few of this M42 body cap and I like it: Fotodiox M42 Metal Silver Camera Body Cap for 42mm x1 Thread Screw Mount Camera http://fotodioxpro.com/index.php/fotodiox-m42-metal-silver-camera-bo...