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It's official! The inimitable CV Bokton! |
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12-08-2011
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#251
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phound photography
noimmunity is offline
Join Date: Jul 2007
Location: Lyon/Taipei
Age: 50
Posts: 2,441
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It's official! The inimitable CV Bokton!
Bokton! I love it! Saw that on Tom's post; a fast one on your part!
Finally a real name for this lens. The only thing left from "the Beast" is the letter B.
And yes, the Bokeh on that Bicycle Basket is Brilliant!
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jon 小強
搬到畫國後免疫系統變得超強,所過的生活宅到不行!
The old adage says: Seeing is believing. To me, that doesn't mean that the world seen is the truth, it means rather that seeing is a field in which the purity of heart is expressed--or not, depending upon whatever happens to cloud that purity at any given moment.
flickr (recently rewarded for not staying 'pro')
Flickr
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12-08-2011
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#252
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Registered User
Shade is offline
Join Date: Sep 2011
Posts: 398
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Is it just me or the bokton creates a slightly similiar swirly like noctilux bokeh?
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12-13-2011
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#253
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Registered User
steini06 is offline
Join Date: Feb 2011
Posts: 1
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Great lens, does somebody use the "new" Bokton on an m8 ?
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12-16-2011
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#254
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Registered User
leicashot is offline
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 1,530
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Last edited by leicashot : 12-17-2011 at 03:17.
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12-16-2011
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#255
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Registered User
leicashot is offline
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Location: Melbourne, Australia
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12-25-2011
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#256
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Registered User
tonal1 is offline
Join Date: Jun 2006
Posts: 175
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Quote:
Originally Posted by leicashot
Guys don't jump the gun yet. There is nothing definitive about the results shown here. We still need brick walls, newspapers and cat pictures to be sure of anything 
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Yes, bring on the cat pictures!
Thanks for the TERRIFIC and USEFUL pictures here.
Looking at these photos, I wonder if any differences people see in "Bokeh" are simply due to the slight contrast difference between these two lenses?
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RF decouple? |
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12-25-2011
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#257
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Registered User
tonal1 is offline
Join Date: Jun 2006
Posts: 175
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RF decouple?
Looking at the pics posted above, I can say I would happily shoot either version of these lenses.
But, I have been wondering about the close focus of the VII. Do you get a little bump of any kind where the lens decouples? If not, that might be a deal breaker for me. I'll bet it doesn't have one (probably because video shooters would HATE it). The same reasoning applies to why I won't shoot early M3's that don't couple closer than 1m (the ones that can NOT be modified that is). I like to turn the lens all the way in and "walk" the camera into focus to get as close as possible. If you can't be confident about where the exact close focus is, then you effectively can't use the lens at it's closest focus point and be sure you truly have focus...
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12-26-2011
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#258
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Registered User
leicashot is offline
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 1,530
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Quote:
Originally Posted by tonal1
Looking at the pics posted above, I can say I would happily shoot either version of these lenses.
But, I have been wondering about the close focus of the VII. Do you get a little bump of any kind where the lens decouples? If not, that might be a deal breaker for me. I'll bet it doesn't have one (probably because video shooters would HATE it). The same reasoning applies to why I won't shoot early M3's that don't couple closer than 1m (the ones that can NOT be modified that is). I like to turn the lens all the way in and "walk" the camera into focus to get as close as possible. If you can't be confident about where the exact close focus is, then you effectively can't use the lens at it's closest focus point and be sure you truly have focus...
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In terms of close focus the V2 isn't very sharp wide open below 0.7M. It may be useful for some and I do use it sometimes, guestimating on the M9-P or on the NEX but don't pixel-peep or you'll be dissapointed as it needs to be stopped down for sharpness.
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12-26-2011
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#259
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Moderator
Doug is offline
Join Date: Sep 2003
Location: Pacific NW, USA
Posts: 9,188
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Quote:
Originally Posted by tonal1
Looking at the pics posted above, I can say I would happily shoot either version of these lenses.
But, I have been wondering about the close focus of the VII. Do you get a little bump of any kind where the lens decouples? If not, that might be a deal breaker for me. I'll bet it doesn't have one (probably because video shooters would HATE it). The same reasoning applies to why I won't shoot early M3's that don't couple closer than 1m (the ones that can NOT be modified that is). I like to turn the lens all the way in and "walk" the camera into focus to get as close as possible. If you can't be confident about where the exact close focus is, then you effectively can't use the lens at it's closest focus point and be sure you truly have focus...
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True that you cannot be sure of focus distance closer than the decoupling point unless you go by the distance scale and either estimate or use a measuring tape.
I have a couple of ZM lenses that focus closer than the rangefinder. There is no "bump" or other tactile or audible signal for decoupling, but the RF patch does stop moving. You can then backtrack and focus the lens back out until you see it's coupled again, and stop. I'll then "walk" the camera in to where the RF patch indicates correct focus. That's as close as the camera is accurate.
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12-27-2011
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#260
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Registered User
leicashot is offline
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 1,530
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The Nokton is equally the most flare resistent lens I've used next to the Noct 095, but like any lens, it will flare with a filter in many situations, so i try to remember to remove it when shooting towards strong light sources. Considering my filter has many scratches, I'm glad I use a protective filter 
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12-27-2011
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#261
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Registered User
Turtle is offline
Join Date: Mar 2005
Posts: 2,470
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just got mine and found it is out at mechanical infinity. Bummer. Anyone know how to adjust this?
Will see how it affects focus accuracy at closer distances as first roll is in the camera now. I suspect it will be noticeable.
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01-10-2012
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#262
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Registered User
DennisPT is offline
Join Date: Jan 2009
Location: Hong Kong
Posts: 254
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V1 Ektar 100 M6. Sorry, it's not digital.

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Once the picture is in the box, I'm not all that interested in what happens next. Hunters, after all, aren't cooks.– HCB
Leica M6, M8.2 & assorted lens & Minolta Dimage Pro Scanner.
Latest GAS attack: DP2M
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01-15-2012
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#263
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Registered User
Turtle is offline
Join Date: Mar 2005
Posts: 2,470
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I tested mine and despite being out at mechanical infinity it seems to to be smack on at all distances, showing no front or rear focus. I guess there is some sort of mechanical stop for inifinity which is not adjusted right.
The good news is that this lens is simply astonishing. At f1.2 is it beyond what I thought possible and by f2 or so it gets little better on center, with only the edges improving slightly to f4 or 5.6 perhaps. Even at 1.2 the edges are really very good.
This lens has turned out to be the perfect companion to the 24 lux I have and the two will be able to do great things together in low light. To have saved for the Leica would have been pointless. This lens is plenty good enough and at some point in the future I will sort out the mechanical stop for infinity. This lens is so darned good, I don;t want to risk an exchange!
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02-04-2012
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#264
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Moderator
jsrockit is offline
Join Date: Nov 2009
Location: NYC
Age: 39
Posts: 11,942
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Ok, so does this lens exhibit focus shift at all?
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02-04-2012
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#265
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Registered User
Alnitak is offline
Join Date: Oct 2009
Location: Los Angeles, CA
Posts: 101
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Quote:
Originally Posted by jsrockit
Ok, so does this lens exhibit focus shift at all?
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No, not all.
Jeff
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02-04-2012
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#266
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Registered User
BobYIL is offline
Join Date: Sep 2009
Posts: 1,314
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leicashot!
May all thunderbolts of Zeus be upon you! (Some of them on jonmanjiro too!)
(I have just ordered this lens from Scott..)
 Bob 
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06-12-2012
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#267
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Registered User
mls64 is offline
Join Date: Apr 2010
Posts: 36
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I rented the 35/1.2 vII from lensrentals, to use at my daughter's wedding. Really nice lens! This one was at 1.4, ISO 640 on the M9.
I have the Summicron 35 ASPH, and am trying to decide whether to pick up the 35/1.2 v1 or v2 to use for low light.

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-Michael
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06-12-2012
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#268
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Registered User
mls64 is offline
Join Date: Apr 2010
Posts: 36
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Another M9 photo, 640 ISO, CV 35/1.2 vII @ 1.2 or 1.4

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-Michael
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06-23-2012
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#269
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Registered User
G1DRP is offline
Join Date: Apr 2011
Location: Middle England.
Age: 46
Posts: 27
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Great photos! Thanks for sharing them.
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Cheers,
Ian
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07-29-2012
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#270
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Registered User
mls64 is offline
Join Date: Apr 2010
Posts: 36
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Quote:
Originally Posted by G1DRP
Great photos! Thanks for sharing them.
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Thanks Ian.
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-Michael
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08-26-2012
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#271
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Registered User
Jesse2004 is offline
Join Date: Aug 2012
Posts: 2
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Hi All,
I notice from some photos posted above, and as pointed out by Alnitak, purple fringing seems to be quite severe in high contrast areas. Some even noticeable without enlarging. Another example:
http://www.flickr.com/photos/joezander/7592423934/
Since I don't have much experience with such large aperture lenses, could someone explain this issue a bit more? Is it normal for a lens in this class or it is a drawback of this lens? Will it get better when stopping down?
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08-26-2012
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#272
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Registered User
menos is offline
Join Date: Sep 2009
Location: Shanghai
Posts: 2,208
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Quote:
Originally Posted by Jesse2004
Hi All,
I notice from some photos posted above, and as pointed out by Alnitak, purple fringing seems to be quite severe in high contrast areas. Some even noticeable without enlarging. Another example:
http://www.flickr.com/photos/joezander/7592423934/
Since I don't have much experience with such large aperture lenses, could someone explain this issue a bit more? Is it normal for a lens in this class or it is a drawback of this lens? Will it get better when stopping down?
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Welcome Jesse!
This has nothing to do with a specific lens.
It has only to do with having been shot with a digital sensor, being nuked by a much larger contrast, than it can swallow, creating this effect.
Only remedy, to ease this effect, is exposing differently (underexposing and bringing the shadows back in post processing) or exposure bracketing and combining exposures in PP.
The use of color negative film would also be a solution, opposed to using a M9.
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08-27-2012
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#273
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Registered User
Jesse2004 is offline
Join Date: Aug 2012
Posts: 2
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Thanks for the quick reply, menos, very informative!
Now there is one question remaining: how this lens stacks up against the Zeiss 35mm f2 in terms of IQ, especially at f2 or f2.8? Size comparison is not needed, it's just too obvious.
Jesse
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09-08-2012
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#274
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Registered User
leicashot is offline
Join Date: Aug 2007
Location: Melbourne, Australia
Posts: 1,530
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Quote:
Originally Posted by Jesse2004
Thanks for the quick reply, menos, very informative!
Now there is one question remaining: how this lens stacks up against the Zeiss 35mm f2 in terms of IQ, especially at f2 or f2.8? Size comparison is not needed, it's just too obvious.
Jesse
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The Zeiss 35/2 is an average performer wide open, similar to the pre-ASPH Summicron. But it's distortion control is great and it has very little field curvature. While the Nokton has more field curvature (good for isolation), it is also sharper wide open and at f/2.8. It's also a little better against flare....but of course there's a considerable size difference.
My tests also indicated a better sharpness at f/2.8 against the 35mm C-Biogon as well, which says a lot about just how good the Nokton is. I also recently compared the Nokton against the latest Summilux ASPH 35 FLE, and they're both equal at f/1.4. The Nokton is also much better against flare, but the Summilux has a flatter field and a little less distortion.
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