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asiostygius
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Re: Manual Focus Nikon Glass


wapsijims wrote:
using a PN-11 extension tube

Hello folks. I am just getting into using a couple of MF lenses and have a question about using the PN-11 extension tube. I hope this is the right place to ask....let me know if it's not.

In your experience what are the shortest, longest and most used manual focus lenses with this extension tube?

thanks Jim S aka "wapsijims"



Hi Jim, welcome.

This tube is a perfect match to the 105mm f/2.8 AIS micro to result in a ~ 1:1 magnification.
Otherwise it is usable with excellent results in virtually all Nikkors, except perhaps with wide angles because the working distance would be ridiculously small.

I do recommend you research what is the native magnification of your lenses here:
http://www.photosynthesis.co.nz/nikon/specs.html

and then calculate both magnification and focusing distance in this excellent calculator (middle of the page):
http://www.cambridgeincolour.com/tutorials/macro-extension-tubes-closeup.htm

For example, the Nikkor 50mm f/2 AI have a native magnification of 1:6.7 = 0.1493x and a MFD of 45cm.
Applyingthe native magbification of the lens and the PN-11 (52.5mm of extension) to the calculator we get
the new 1.2x of magnification and a 21.17cm of MFD.

Some sample shots and applications:


Slide dupe with 55/2.8 micro:


Juvenile South American coati by labecoaves, on Flickr

Dupe: D3 + PN-11 ext. tube + 55mm f/2.8 micro @f/8 +ES-1 slide copying adapter, flash bounced on a white wall behind slide.


Some macros:


Bokeh playing with Nikkor 85mm f/1.8 K ai'd by labecoaves, on Flickr

Bokeh playing with Nikkor 85mm f/1.8 K ai'd
D7000 + PN-11 tube + 85mm f/1.8 K ai'd; wide open at 1/250s, ISO 200.
No crop, slight pass of smart sharpen (amount 50, 0.5px).



Jumping spider with "210mm f/5.6 micro" + tubes by labecoaves, on Flickr

Jumping spider with "210mm f/5.6 micro" + tubes
The jumping spider has a length of just 9mm.
D7000 + PN-11 tube + TC201 + 105mm f/2.8 micro AIS (=210mm f/5.6).
ISO 400, f/11(5.6) at 1/100s.

and an application with longer teles:


Great Kiskadee portrait with Nikkor 400mm f/5.6K ED by labecoaves, on Flickr

Great Kiskadee portrait with Nikkor 400mm f/5.6K ED
A casual "portrait" taken with D3 + PN-11 tube + Nikkor 400mm f/5.6 K ED ai'd.
As the MFD of this old non IF lens is 5m, and the bird was at 3.5m, I had to use the PN-11 tube to get focus; ~10% cropped.
ISO 800, hand held, f/8 at 1/400s, late afternoon light.














Jan 23, 2013 at 02:22 AM



  Previous versions of asiostygius's message #11291900 « Manual Focus Nikon Glass »