JohnBrawley Posted August 19, 2017 Share #21 Posted August 19, 2017 Advertisement (gone after registration) Might help to understand mechanics and structure of the lens central shutter (with blades) vs the focal plane camera shutter (curtains).... http://www.reddotforum.com/content/2012/03/testing-the-cs-lenses-on-the-leica-s2-740/ Jeff Jeff I'm aware of the differences. I've just never seen anywhere any mention of a difference in Bokeh, including your linked article. Is it a freak one off or is it a known artefact ? JB Link to post Share on other sites More sharing options...
Advertisement Posted August 19, 2017 Posted August 19, 2017 Hi JohnBrawley, Take a look here CS vs Non CS Lenses. I'm sure you'll find what you were looking for!
JohnBrawley Posted August 19, 2017 Share #22 Posted August 19, 2017 Jeff I'm aware of the differences. I've just never seen anywhere any mention of a difference in Bokeh, including your linked article. Is it a freak one off or is it a known artefact ? JB To answer my own question When in CS, I can induce the same artefact easily at shutter speeds around 1/360 and higher. I can still kind of see something going on down to 1/90th, but it doesn't look as obvious. I can induce the same artefact in both of the 70mm and 30mm lenses I own. I'm just surprised it's not even been discussed or noticed. JB Link to post Share on other sites More sharing options...
Jeff S Posted August 19, 2017 Share #23 Posted August 19, 2017 Bokeh differences are often influenced by blade characteristics.... http://www.kern-photo.com/2013/01/why-leaf-shutter-lenses-matter/ I don't know about S discussions specifically, but conceptually this is nothing new. https://www.dpreview.com/forums/post/59295224 Jeff Link to post Share on other sites More sharing options...
JohnBrawley Posted August 19, 2017 Share #24 Posted August 19, 2017 Bokeh and changing iris designs to change bokeh is nothing new, correct. "Stop signs" and oval / round shapes are discussed ad infinitum. Having it change on the same lens so dramatically is different to it being part of the inherent look and I haven't seen it mentioned anywhere before I saw it the very first time I shot using that mode. I'm surprised it's not discussed more, because I frankly find what happens on the S to be pretty distracting and ugly, and I guess to me, it should be part of a conversation about CS VS Non CS lenses. JB Link to post Share on other sites More sharing options...
Jeff S Posted August 19, 2017 Share #25 Posted August 19, 2017 Well, you've started the discussion! Jeff Link to post Share on other sites More sharing options...
basse Posted August 19, 2017 Share #26 Posted August 19, 2017 Tomorow I´ll try with 45 CS vs 45 non CS. Link to post Share on other sites More sharing options...
basse Posted August 20, 2017 Share #27 Posted August 20, 2017 Advertisement (gone after registration) 70mm non CS Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341395'>More sharing options...
basse Posted August 20, 2017 Share #28 Posted August 20, 2017 70mm non CS crop Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341396'>More sharing options...
basse Posted August 20, 2017 Share #29 Posted August 20, 2017 70mm CS Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341400'>More sharing options...
basse Posted August 20, 2017 Share #30 Posted August 20, 2017 70mm CS crop Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341401'>More sharing options...
basse Posted August 20, 2017 Share #31 Posted August 20, 2017 45mm non CS Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341402'>More sharing options...
basse Posted August 20, 2017 Share #32 Posted August 20, 2017 45mm non CS crop Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341403'>More sharing options...
basse Posted August 20, 2017 Share #33 Posted August 20, 2017 45mm CS Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341404'>More sharing options...
basse Posted August 20, 2017 Share #34 Posted August 20, 2017 45mm CS crop Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3341405'>More sharing options...
basse Posted August 20, 2017 Share #35 Posted August 20, 2017 All examples with f2,5 (70mm), f2,8 (45mm) / 1/12. IMO no significant differences between CS vs. non CS. Link to post Share on other sites More sharing options...
JohnBrawley Posted August 20, 2017 Share #36 Posted August 20, 2017 All examples with f2,5 (70mm), f2,8 (45mm) / 1/12. IMO no significant differences between CS vs. non CS. Interesting ! I found I was seeing it at shutter speeds that were faster than 1/12th, up around 1/90th, becoming more pronounced as you go into higher shutter speeds. JB Link to post Share on other sites More sharing options...
JohnBrawley Posted August 20, 2017 Share #37 Posted August 20, 2017 I'll post some more images but here's what I've been able to see just chimping. You shoot faster than 1/1000 and it's not there. I also notice there's a different shutter sound above that, which I'm sure is related. I can see it showing up from around 1/90th. Aperture doesn't have as much affect on it as you would think. I was shooting at F11 and still seeing it. It seems to show up more prominently the closer you are to minimum focus. It's affected a little by exposure. I couldn't reproduce it at first because the out of focus highlights were clipped. You need to expose for those to be able to see this effect. JB Link to post Share on other sites More sharing options...
Guest NEIL-D-WILLIAMS Posted August 28, 2017 Share #38 Posted August 28, 2017 Here are a couple of shots taken using S120 cs with profoto B1 headsSent from my iPhone using Tapatalk Welcome, dear visitor! As registered member you'd see an image here… Simply register for free here – We are always happy to welcome new members! Link to post Share on other sites Simply register for free here – We are always happy to welcome new members! ' data-webShareUrl='https://www.l-camera-forum.com/topic/266343-cs-vs-non-cs-lenses/?do=findComment&comment=3346936'>More sharing options...
arionelli Posted September 21, 2017 Share #39 Posted September 21, 2017 I'm new to the Leica S. I've only had my S006 for about a week. I happened to get CS lenses, not by choice, that's just what was included with my very well priced kit. I tried out the CS (not with a flash) just to see what or if there were difference was and noticed there was a difference with the Bokeh. Has anyone else noticed this before when switching between CS and FP mode ? Heres the 70mm wide open https://www.flickr.com/gp/johnbrawley/u4on25 And same exposure settings with the CS mode. https://www.flickr.com/gp/johnbrawley/2ba7j1 Notice the star pattern ? See the out of focus highlights ? (also just noticed a big hair top right !) Any explanation ? I haven't gone back and really tested my other lens or different apertures because I frankly have no plans to use the CS mode. JB I would take this issue to Leica with the photos, lens(es) and camera and let them sort it out. I wouldn't know, but to me it looks like the shutter leaves (are there four just as seen in your photo?) may not be quite closing on time or bouncing open with resultant residual light being caught by the focal plane shutter before it hammers home. Too obvious not to be noticed by others priorly and I agree it significantly detracts from the smooth look you are going for. I wouldn't think that Leica would sell their flagship without first having sorted this out if it was inherent in the design. Link to post Share on other sites More sharing options...
arionelli Posted September 22, 2017 Share #40 Posted September 22, 2017 I would take this issue to Leica with the photos, lens(es) and camera and let them sort it out. I wouldn't know, but to me it looks like the shutter leaves (are there four just as seen in your photo?) may not be quite closing on time or bouncing open with resultant residual light being caught by the focal plane shutter before it hammers home. Too obvious not to be noticed by others priorly and I agree it significantly detracts from the smooth look you are going for. I wouldn't think that Leica would sell their flagship without first having sorted this out if it was inherent in the design. Hopefully you have tried this already but give all the gold contacts a good clean and polish... Link to post Share on other sites More sharing options...
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