PabloR Posted December 30, 2013 Share #41 Posted December 30, 2013 Advertisement (gone after registration) ajaja, pure leica i will buy one Link to post Share on other sites More sharing options...
Advertisement Posted December 30, 2013 Posted December 30, 2013 Hi PabloR, Take a look here focus peaking question. I'm sure you'll find what you were looking for!
CheshireCat Posted December 30, 2013 Share #42 Posted December 30, 2013 front focus, back focus, exposure errors, shutter errors, asymmetric diaphragms, that kind of electronic japanese cameras... I wonder what lenses have you ever used with your Canon... Comparing Leica lenses to the $299 Canon 50/1.4 is unfair at best. With professional lenses, most AF errors are user errors. And by the way, AF on Canon is infinitely better than on the M State of the art 1Dx AF apart (science fiction for Leica), just mount a Zeiss APO 135/2 (or your Leica-R lens of choice) on a 5D2 with ML firmware, and you will understand how far from reality your comments are. Link to post Share on other sites More sharing options...
ZPM8 Posted June 17, 2014 Share #43 Posted June 17, 2014 Hello, I have an M8 and wonder if there would be an accessory which would allow me to use focus peaking: should I buy an EVF accessory for that purpose ? Appreciate your advice. Thanks Link to post Share on other sites More sharing options...
mjh Posted June 17, 2014 Share #44 Posted June 17, 2014 No focus peaking without live-view, no live-view without a CMOS sensor. So no focus peaking for the M8 or M9. Link to post Share on other sites More sharing options...
rafael_macia Posted June 19, 2014 Share #45 Posted June 19, 2014 It would be good if some indication within that lit up area showed the point of sharpest focus. Perhaps a color change or lit area change,(Brightness .... etc.) ? Link to post Share on other sites More sharing options...
mjh Posted June 19, 2014 Share #46 Posted June 19, 2014 It would be good if some indication within that lit up area showed the point of sharpest focus. It already does that. The highlighted area is the one with the highest contrast and thus – probably – maximum sharpness. You could include areas with slightly less contrast but I’m not sure that would be helpful. Link to post Share on other sites More sharing options...
jaapv Posted June 19, 2014 Share #47 Posted June 19, 2014 Advertisement (gone after registration) I think that cameras that show more in-your-face focus peaking show more of a zone of sharpness than the more precise but less intrusive Leica system. Link to post Share on other sites More sharing options...
rafael_macia Posted June 28, 2014 Share #48 Posted June 28, 2014 At the point of "perfect focus" there is 1/3 of depth of field to the front and 2/3 to the back. This area is what the focus peaking is showing you, not the point of focus Sent from my HTC One using Tapatalk What I meant is .... It would be better if Leica showed the point of "perfect focus" somehow highlighted, within the focus peaking apparatus. The focus peaking shows (if I understand correctly), the depth of sharpness i.e. DOF, for the aperture selected. In the 240, the whole area is lit evenly with FPeaking. I think an indication for the point of perfect focus would be better. Does that make sense ? Link to post Share on other sites More sharing options...
mjh Posted June 28, 2014 Share #49 Posted June 28, 2014 What I meant is .... It would be better if Leica showed the point of "perfect focus" somehow highlighted, within the focus peaking apparatus. The focus peaking shows (if I understand correctly), the depth sharpness. (DOF), for the aperture selected. What it really shows is where there is maximum micro-contrast – in the live-view image, not in the sensor data, so even that depends on the chosen magnification. What you are suggesting Leica should implement isn’t even an option. Link to post Share on other sites More sharing options...
jaapv Posted June 28, 2014 Share #50 Posted June 28, 2014 What I meant is .... It would be better if Leica showed the point of "perfect focus" somehow highlighted, within the focus peaking apparatus. The focus peaking shows (if I understand correctly), the depth of sharpness i.e. DOF, for the aperture selected. In the 240, the whole area is lit evenly with FPeaking. I think an indication for the point of perfect focus would be better. Does that make sense ? Not really. But you can simulate your idea by focusing wide open and then stopping down. Note also that focus peaking is more useful for longer and faster lenses. Link to post Share on other sites More sharing options...
timde Posted June 28, 2014 Share #51 Posted June 28, 2014 What it really shows is where there is maximum micro-contrast – in the live-view image, not in the sensor data, so even that depends on the chosen magnification. What you are suggesting Leica should implement isn’t even an option. Is the focus peaking applied before or after magnification? I found, with a camera from another maker and using M-glass (they all do more or less the same thing), that magnification made the peaking easier to see but did not change the amount/DOF being shown. This made it very easy to focus a 90mm lens wide open and very difficult to focus a 28mm lens when stopped down. Perhaps it would be an idea to automatically select the micro-contrast threshold used for peaking based on the attached lens focal length and aperture guesstimate. Link to post Share on other sites More sharing options...
mjh Posted June 28, 2014 Share #52 Posted June 28, 2014 Is the focus peaking applied before or after magnification? After magnification – focus peaking is little more than an enhancement of the live-view image at the selected magnification. That’s why at 10x magnification the highlighted area is much smaller than it is without magnification. Focus peaking would be much more useful if it could use the high resolution sensor data even without magnification, but that’s just not feasible with today’s technology. Link to post Share on other sites More sharing options...
Chito Posted June 28, 2014 Share #53 Posted June 28, 2014 What I meant is .... It would be better if Leica showed the point of "perfect focus" somehow highlighted, within the focus peaking apparatus. The focus peaking shows (if I understand correctly), the depth of sharpness i.e. DOF, for the aperture selected. In the 240, the whole area is lit evenly with FPeaking. I think an indication for the point of perfect focus would be better. Does that make sense ? I know what you mean. But I think that "point" doesn't exist. I mean, how big (or wide) is that point (it would be more like a plane instead of a point)? It's all about fields of apparent sharpness. What you see through focus peaking is what the algorithms determine as sharp enough for them to consider in focus. How do you even envision this point (or plane)? Link to post Share on other sites More sharing options...
CheshireCat Posted July 3, 2014 Share #54 Posted July 3, 2014 Not really. But you can simulate your idea by focusing wide open and then stopping down. Unfortunately, this does not always work : - Peripheral focus field on many lenses will noticeably vary stopping down. - A few lenses have huge focus shift even on the axis. Most notably the Noctilux f/1. Link to post Share on other sites More sharing options...
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