Has anyone used the Nikon CFI60 tube lens?

Blame · Post by **Blame** » Sat Jan 15, 2011 3:36 am

Interesting stuff.

However, I would advise caution until we have some results.

The nikon tube lens is designed for a maximum field width of around about 22-24mm. The mitutoyo is probably not designed for a microscope, but an industrial camera. Planned field width would be tiny.

I am not saying that they won't work but that we are in virgin territory here.

Ultra wide field widths are not only pushing the boundaries for objectives, but also for tube lenses.

ChrisLilley · Post by **ChrisLilley** » Sun Jan 16, 2011 9:35 am

rjlittlefield wrote: BTW, we can tell from this diagram that the Nikon tube lens is weakly telephoto -- physically shorter and closer to the sensor than its 200 mm focal length would suggest.

Continuing to look at this diagram, the diameter at the narrowest part is 36mm so ignoring the thickness of metal surrounding the glass (which from the photos is non negligible, but the thickness is unknown) then the aperture would be 200/36= f/5.5.

Also, assuming that the tube lens is a fairly simple two or three element design, could it be assumed that the entrance and exit pupils are coincident near the middle of the physical lens? In that case they are 151.2 + 29/2 = around 165mm from the sensor plane.

RogelioMoreno · Post by **RogelioMoreno** » Tue Jan 18, 2011 8:23 pm

Craig Gerard wrote: Rogelio,

Could you provide more details regarding the "mounted tube lens that came with the Mitutoyo" ?

Craig

Here are some pictures of the mounted tube lens that came with the Mitutoyo 10X:

Here the tube lens with the adapter to M42 + M42 to Canon EOS adapter:

The setup (the camera is not shown, it goes with the AS shown on the picture):

The clear diameter of the tube lens is 30mm.

Rogelio

Craig Gerard · Post by **Craig Gerard** » Tue Jan 18, 2011 11:40 pm

Rogelio,

Thankyou for the images

Craig

OzRay · Post by **OzRay** » Wed Jan 19, 2011 12:27 am

Is there a Google translator version available for all of this?

Cheers

Ray

RogelioMoreno · Post by **RogelioMoreno** » Wed Jan 19, 2011 1:34 pm

Craig Gerard wrote:Rogelio,

Thankyou for the images

Craig

Craig,

I have to do some test with the mounted tube lens; but in the meantime here is an image with Mitutoyo Plan Apo 5X/0.14 and Nikon infinity trinocular head (direct projection):

Rogelio

Craig Gerard · Post by **Craig Gerard** » Wed Jan 19, 2011 4:51 pm

Rogelio,

Excellent result, great detail!

Craig

ChrisLilley · Post by **ChrisLilley** » Wed Jan 19, 2011 10:27 pm

A really nice result, great detail on the black body and an interesting looking ant (I assume its an ant). Very nicely lit.

So you are happy with that APO 5x?

Craig Gerard · Post by **Craig Gerard** » Thu Jan 20, 2011 1:00 am

Looks similar to these ants uploaded by Gustavo Mazzarollo:
http://www.photomacrography.net/forum/v ... ght=#74229

Craig

dmillard · Post by **dmillard** » Thu Jan 20, 2011 1:25 am

Rogelio,

Excellent ant image! I also like your simple but apparently solid setup.

David

RogelioMoreno · Post by **RogelioMoreno** » Thu Jan 20, 2011 5:24 am

ChrisLilley wrote:A really nice result, great detail on the black body and an interesting looking ant (I assume its an ant). Very nicely lit.

So you are happy with that APO 5x?

Yes, I am happy with my Apo 5x.

Is there anybody that I could send the full res. and host and post it?

Rogelio

morfa · Post by **morfa** » Thu Jan 20, 2011 7:57 am

A high resolution version of Rogelios great looking ant shot with the Mitutoyo 5x/0.14 M Plan Apo can be downloaded here: http://farm6.static.flickr.com/5082/537 ... a043_o.jpg

RogelioMoreno · Post by **RogelioMoreno** » Fri Jan 21, 2011 6:07 am

Thank you to all for the comments about the ant picture (I think it is an ant).

Thank you John for posting the full res version.

The posted version of the image was with all the frame raw pre-sharpened before stacking. I have a version with all the frame without pre-sharpening before the stacking, I will try to post a comparison between them.

Actually there is an ebay auction of a Mitutoyo Plan Apo 5x starting at $275 new demo version (I bought mine for $225 used).

Rogelio

Eric F · Post by **Eric F** » Fri Jan 21, 2011 11:26 am

Yes, it is an ant (and beautifully photographed!). It is a"turtle ant" -- Cephalotes sp. There are many species, some spiny, some not; see

RogelioMoreno · Post by **RogelioMoreno** » Sun Jan 23, 2011 4:37 pm

Eric,

Thank you.

Rogelio