Author Topic: Nikkor 135 AF DC f/2 D  (Read 36237 times)

beryllium10

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Re: Nikkor 135 AF DC f/2 D
« Reply #165 on: December 24, 2018, 17:39:35 »
Robert - thanks. These were all taken wide open, so f/2 for the 135mm.  Closing down, even to f/2.8, makes the disk edges non-circular.  The 135 DC is a favorite lens.  Still fairly expensive second-hand, though prices came down quite a bit after release of the 105mm f/1.4.
Erik and Charlie, thanks, that's good news - something I can get at to clean.  I'd wondered if I was seeing diffraction around something internal, with the lens so far out of focus.  I did try to clean the rear element with a blower, but probably left a few specks that I'll need to take off with a cloth.
Cheers again,  John

Robert Camfield

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Re: Nikkor 135 AF DC f/2 D
« Reply #166 on: December 24, 2018, 19:30:47 »
John,

To clarify, do I understand that the out-of-focus disks (X-mas tree lights, I think) stretch out, assuming a progressively more elliptical shape with smaller apertures?

...Thanks again, Robert   

beryllium10

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Re: Nikkor 135 AF DC f/2 D
« Reply #167 on: December 25, 2018, 05:28:14 »
Hi again Robert - they are out-of-focus Xmas tree lights, but as you stop down they begin to show the 9-sided polygonal shape of the aperture.  To show the effect I'll take a series at successively smaller apertures and post.  Cheers,  John

Fons Baerken

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Re: Nikkor 135 AF DC f/2 D
« Reply #168 on: December 25, 2018, 11:10:47 »




D3  135mm f/2DC max frontside blur, max rearside blur
posted earlier i know

Robert Camfield

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Re: Nikkor 135 AF DC f/2 D
« Reply #169 on: December 29, 2018, 03:55:12 »
...but as you stop down they begin to show the 9-sided polygonal shape of the aperture.  To show the effect I'll take a series at successively smaller apertures and post.

Got it - thanks, John. For me, these photos with the DCs by you, Fons, and Jakov highlight the importance of out-of-focus regions. Discretely managed, out-of-focus features can make for strikingly beautiful photos.

Robert