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Speed booster for NEX

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Vivek

Guest
A correction: The Micronikkor P 55/3.5 A mounts just fine without any problem, though the rear baffle looks menacingly close.

The Nikkor 35/.14 looks delicious. There seems to be no corner worries. I do not think I have a great sample. It is an old Nikon A version and has an yellow cast (had this on film). If someone has a modern AiS version, it is definitely something to use, althoug it may not be possible to use a hood.
 
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Vivek

Guest
Hi John, My sample is still "mint". No mods, none whatsoever!

I also want to add a correction here-

To be safe, i trimmed about 1mm of the rear shroud on my GN-Nikkor Auto 45/2.8. It is entirely worth the bother to use this lens with the Speed Booster!

This is a tiny Tessar clone which is a mechanical master piece! Apart from the nifty GN mechanism, it has a well rounded aperture diaphram. Simply fabulous!

If anyone locates the hood (I believe HN32), please drop me a line.
 
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Vivek

Guest
I finally got my EOS-F Adapter and have uploaded a sample with my Zeiss Planar T 50/1.4 at a boosted f/1. Focus at infinity works on the lens with the speed booster. Now wish my c/y adapter would arrive.
lovely!

i tried the Planar 50/1.4 and the EF 50/1.4, last Sunday. Very big difference in terms of OOF renderings. Zeiss Planar is "perfect". :)
 
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Vivek

Guest
I will just report on two low grade Nikon zooms.

The 18-55 AFS ("kitzoom for APS-C cameras")- from 24mm to 55mm no vignette worries, wide open. At 18mm there are prominent dark corners.

The 70-300 f/4-5.6 AF-D- Works fine at all FLs, wide open.
 
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Vivek

Guest
One snap of the Nikon 20/3.5 AiS with the Nikkor 35/1.4 at ~0.5m.


Untitled by Vivek Iyer, on Flickr
NEX-6, Speed Booster, Nikkor 35/1.4 Auto, Effective f/1.0
 
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Vivek

Guest
Olympus OM 85/2 with the Speed Booster is a dream portrait set-up!


Untitled by Vivek Iyer, on Flickr
NEX-6, Speed Booster, Olympus OM 85/2, Effective f/1.4
 

brianc1959

New member
A couple of wide open shots to show the OOF rendering.
I'm really learning a lot from your tests images, Vivek - thanks so much for doing all this!

I have to confess that an 85/2 is not something I would have though of as a compelling companion to the Speed Booster since it winds up being almost the same (at least superficially) as a plain vanilla 50mm f/1.4. However, the bokeh in your shots looks really nice. I'm curious about your opinion regarding the 85/2 + SB vs. a plain 50/1.4.

I'll have to dig out my old 85/2 Nikkor to see if it gives similar results.
 

monza

Active member
Bear in mind the 85/2 will be essentially an 85/2 when adapted with the Speed Booster (~1.4 in light gathering but ~2.0 in DOF equivalency.)

If you are talking about a straight adaption of a 50/1.4 to a NEX, then yes, you'll be at roughly 75/1.4 in light gathering, f/2 in DOF equivalency.
 
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Vivek

Guest
Bear in mind the 85/2 will be essentially an 85/2 when adapted with the Speed Booster (~1.4 in light gathering but ~2.0 in DOF equivalency.)

If you are talking about a straight adaption of a 50/1.4 to a NEX, then yes, you'll be at roughly 75/1.4 in light gathering, f/2 in DOF equivalency.
I hope that post is NOT for Brian, Robert. Brianc1959 is the creator of the Speed Booster. :)
 
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Vivek

Guest
I'm really learning a lot from your tests images, Vivek - thanks so much for doing all this!

I have to confess that an 85/2 is not something I would have though of as a compelling companion to the Speed Booster since it winds up being almost the same (at least superficially) as a plain vanilla 50mm f/1.4. However, the bokeh in your shots looks really nice. I'm curious about your opinion regarding the 85/2 + SB vs. a plain 50/1.4.

I'll have to dig out my old 85/2 Nikkor to see if it gives similar results.
Hi Brian, I am the one to be thanking youfor this!

I will try a comparison of the 50/1.4. However, I am sure that this OM 85/2 is something special.

FWIW, I bought this sample from monza (Robert). :)
 

monza

Active member
The three lenses I can't wait to try are C/Y 60/2.8 Makro Planar, 50/1.4 Planar, and 85/2.8 Sonnar. :)
 

brianc1959

New member
Bear in mind the 85/2 will be essentially an 85/2 when adapted with the Speed Booster (~1.4 in light gathering but ~2.0 in DOF equivalency.)

If you are talking about a straight adaption of a 50/1.4 to a NEX, then yes, you'll be at roughly 75/1.4 in light gathering, f/2 in DOF equivalency.
Hi:
I'm Brian. Pleased to meet you!

I'm a bit old-school, so I never think in terms of equivalency with regard to focal length and f/#. So the combination of an 85/2 plus the Speed Booster *is* a 60mm f/1.4 lens.

So, I'm thinking that superficially it should act pretty much like an ordinary 50/1.4 mounted to a NEX with a plain adapter. What I'm interested in here is whether there is something subtle (and hopefully worthwhile!) going on with a bokeh difference between these two cases. It's just something that hadn't occurred to me until I read Vivek's post.
 
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