Very nice macros. Thanks for sharing.

The CO lens pair must have cost many thousands of dollars, while the Scanner Nikon ED costs as little as $200. And the image circle of the Nikon is 60 mm in diameter! I am very impressed by my Scanner Nikon. However my copy of the Printing Nikkor 105 A version is even better. (My copy, which I got ...

ray_parkhurst wrote:The Nikon has better contrast in both center and corner, but the Coastal is sharper in the corner.

I agree. BTW, top is Coastal. I wonder what is the logic behind infinity design of the Coastal system vs single lens ?
Chuong

I got these four massive lenses custom made by Coastal Optical System some time ago from a surplus vendor but never had time to test them. The black lenses on the left are actually infinity objectives. They can be coupled for mag between 1X to 2X. The tall one from the picture is two 105 f2.38 coupl...

Nice. Thanks for sharing.

Chuong

ChrisR wrote:That's very good. How long did it take?

It took me about 6 hours total. Three hours to setup and take pictures,

I just like to share the composite image of 35 stacked image taken with this lens at 2X.
http://www.gigapan.com/gigapans/197620

I just like to share some images taken with these two special lenses mounting reverse on the Olympus OMD M5. No post processing after stacked on rail with same setup and LED lighting. Nikon Ultra Micro Nikor 28 mm f 1.8 e-line green Zeiss S-planar 25 mm f 1.6 5460 angstrom They are both design to re...

Hi, I have one if you still interested.
Chuong

Thanks for sharing. To do it right = hard work.

Hi,

This lens is on ebay now.

http://www.ebay.com/itm/Linos-Inspec-x- ... Sw2xRYX9iV

I just want to share that the Olympus 40-150 2.8 could be used as tube lens with inf corrected lens/objective for stacking. The image was taken with Olym Zoom at 150 FL + Nik CFI 4X .13 NA, 500stack. http://www.photomacrography.net/forum/userpix/1872_Flyhead_OZoomNik4X_2_500stack_1.jpg Great image!...

Sorry for the bad formatting. Copy from Excel and past did not work to well.

Below is the number of bracketing shots with various lenses and settings. Olympus allows two parameters, #of shots and "focus differential" (step size). For this test, the # of shot was set at 999 and FD from 1 to 10. The number of shots from minimum distance to infinity was recorded. Lens Fl f # 1 ...

Here is the test target ( 1mm microscope calibration ) with 20X Nikon CFI in front of the Olympus 40-150 2.8 set at 150. The target was slanted so that the focus varies from 10 meter to infinity. Lighting was stronger on the left side. Helicon image: http://www.photomacrography.net/forum/userpix/187...