piblondin Posted September 9, 2014 Share #1  Posted September 9, 2014 Advertisement (gone after registration) I rotated and, I think, shifted the plane of focus. As a result, she's out of focus. How would you go about shooting at f/1.4 when you want to frame your subject towards the edge of the photo at medium distances? I know you can lean back, etc. But is there a more accurate way to do this? 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/233667-how-would-you-focus-this-50mm-at-f14/?do=findComment&comment=2667007'>More sharing options...
Advertisement Posted September 9, 2014 Posted September 9, 2014 Hi piblondin, Take a look here How would you focus this? (50mm at f/1.4). I'm sure you'll find what you were looking for!
mirekti Posted September 9, 2014 Share #2 Â Posted September 9, 2014 I wouldn't rotate, but I would lean or make a step towards left. Imagine there is a 2D surface at the point of focus (like a huge window glass), and that surface is parallel to the sensor surface. Once you move left and keep the sensor parallel to that surface it should be ok. It could not work well with the lenses that don't have flat field of focus. Link to post Share on other sites More sharing options...
CheshireCat Posted September 10, 2014 Share #3 Â Posted September 10, 2014 t could not work well with the lenses that don't have flat field of focus. Â Like most lenses wide open. Â Solutions (easiest to most difficult): - AF camera. - Live View with focus peaking. - Know the focus field at any aperture of each of your lenses. Link to post Share on other sites More sharing options...
paulsydaus Posted September 10, 2014 Share #4  Posted September 10, 2014 Except that the OP was trying to frame off centre so I don't think method 2 will work...  Like most lenses wide open. Solutions (easiest to most difficult): - AF camera. - Live View with focus peaking. - Know the focus field at any aperture of each of your lenses. Link to post Share on other sites More sharing options...
paulsydaus Posted September 10, 2014 Share #5 Â Posted September 10, 2014 I would add focus bracketing to the list... Link to post Share on other sites More sharing options...
CheshireCat Posted September 10, 2014 Share #6 Â Posted September 10, 2014 Except that the OP was trying to frame off centre so I don't think method 2 will work... Â Leica's Focus Peaking is so poorly implemented that I must agree with you. Link to post Share on other sites More sharing options...
paulsydaus Posted September 10, 2014 Share #7 Â Posted September 10, 2014 Advertisement (gone after registration) I think the easiest thing for you to do is bracket a series of exposures while either leaning in and then out, or slightly pulling the focus... One of them should be your money shot... Link to post Share on other sites More sharing options...
indergaard Posted September 10, 2014 Share #8 Â Posted September 10, 2014 Focus and recompose is the only option on the M cameras. You use the center focusing patch to focus, then recompose. This is not a very accurate way to focus though, and requires a lot of practice and usually several exposures (while leaning a bit back, being centered, and leaning a bit forward) to nail a decent focus. Instead of leaning forward and back you can also ofcourse just use the focusing barrel to do the same (intentionally front focus and back focus, so to speak). Â If the M240's LV or EVF would allow you to move the focus magnification area that would by far be the most accurate way of focusing in these conditions. Sadly the software engineers at Leica was too lazy to do this, or, this functionality is reserved for a future M as it is purely a software implementation in a LV/EVF capable camera, and has nothing to do with hardware limitations at all. Â Certain AF cameras also allow you to use the center focus patch to focus, then recompose in the traditional way, while the subject you focused on are tracked and the focus is kept while you recompose. My Sony A7S has this functionality, and it's great - but I'm not sure if it's faster than just moving the focus patch where you want it in the first place. Link to post Share on other sites More sharing options...
jaapv Posted September 10, 2014 Share #9 Â Posted September 10, 2014 Too lazy? I understand that they tried but is was impossible with the present hardware. There is no indication that it can be done solely in software. Anyway, I would suggest that focus bracketing or judicious -based on experience- focus adjustments are simpler to do than fiddling with the arrow buttons with the camera at your eye. Link to post Share on other sites More sharing options...
indergaard Posted September 10, 2014 Share #10 Â Posted September 10, 2014 Too lazy? I understand that they tried but is was impossible with the present hardware. There is no indication that it can be done solely in software. Â Moving the focus point in software on a EVF/LV capable camera is 100% a software feature. It cannot be a hardware limitation, anyone who claims that are basically making up an excuse. Â It's as easy as this: Â The entire sensor is active when in LV/EVF mode. It captures the entire scene, at the same time, at the same rate, with the same exposure and everything. Â The focus magnificationf feature is a digital zoom. It basically just enlarges a certain area of the sensor. The area that you choose to digitally zoom in on is purely choosen in software. The entire sensor is active and captures the entire scene (what the lens sees) even though you digitally choose to zoom in / magnify a certain area of the captured live data stream. Â This digitally magnified area can be moved. This is purely a software feature, and is not reliant on ANY hardware except; It is requires a LV/EVF capable camera that has the ability to display a live data stream directly of the sensor, and it requires a D-pad or similar so that the end user can move the magnified area. Â Having worked partially with optics and software engineering and software integration for video devices for Tandberg and Cisco previously, with their video communications and collaboration tools, I am very confident in my statement. As long as Live View or EVF is involved - it is purely a software feature. The same technical basics applies to every product that uses live data streams for video in this way. Â The same even applies to webcameras. You can even write software for webcameras that does this for you even though the webcamera does not officially support it, simply because you just take the live data stream and digitally zoom in on a selected area! It's that simple. Some software takes this even a step further, like Microsoft Lync, which automates live cropping and panning based on human movement. This works on EVERY webcamera ever manufactured. It just takes the raw video stream and manipulates it based on the content. So it's all software... And the same principles apply to every device that sends a real-time datastream from a imaging sensor. It doesn't matter how big or small the sensor is, who manufactured it, or how many pixels it has or doesn't have. Link to post Share on other sites More sharing options...
tobey bilek Posted September 10, 2014 Share #11 Â Posted September 10, 2014 Something interesting going on. Notice her left toes are in focus. Â I would learn how the camera/lens responds to focus and recompose and then practice. Â I also thought 1.4 was for pics in the dark. Link to post Share on other sites More sharing options...
piblondin Posted September 10, 2014 Author Share #12  Posted September 10, 2014 Something interesting going on. Notice her left toes are in focus. I would learn how the camera/lens responds to focus and recompose and then practice.  I also thought 1.4 was for pics in the dark.  They are more in focus, but they're not in focus. Link to post Share on other sites More sharing options...
piblondin Posted September 10, 2014 Author Share #13 Â Posted September 10, 2014 So odd that you can't move the area of magnification....wouldn't focus peaking still be useful in this case, though? Link to post Share on other sites More sharing options...
jaapv Posted September 10, 2014 Share #14 Â Posted September 10, 2014 It suggests that the image does not suffer from focus-recompose, but that it is simply frontfocussed, as nothing else of the steet surface is in focus either. Not that this negates the existence of the change in plane of focus when recomposing in general. Link to post Share on other sites More sharing options...
jaapv Posted September 10, 2014 Share #15  Posted September 10, 2014 Moving the focus point in software on a EVF/LV capable camera is 100% a software feature. It cannot be a hardware limitation, anyone who claims that are basically making up an excuse. It's as easy as this:  The entire sensor is active when in LV/EVF mode. It captures the entire scene, at the same time, at the same rate, with the same exposure and everything.  The focus magnificationf feature is a digital zoom. It basically just enlarges a certain area of the sensor. The area that you choose to digitally zoom in on is purely choosen in software. The entire sensor is active and captures the entire scene (what the lens sees) even though you digitally choose to zoom in / magnify a certain area of the captured live data stream.  This digitally magnified area can be moved. This is purely a software feature, and is not reliant on ANY hardware except; It is requires a LV/EVF capable camera that has the ability to display a live data stream directly of the sensor, and it requires a D-pad or similar so that the end user can move the magnified area.  Having worked partially with optics and software engineering and software integration for video devices for Tandberg and Cisco previously, with their video communications and collaboration tools, I am very confident in my statement. As long as Live View or EVF is involved - it is purely a software feature. The same technical basics applies to every product that uses live data streams for video in this way.  The same even applies to webcameras. You can even write software for webcameras that does this for you even though the webcamera does not officially support it, simply because you just take the live data stream and digitally zoom in on a selected area! It's that simple. Some software takes this even a step further, like Microsoft Lync, which automates live cropping and panning based on human movement. This works on EVERY webcamera ever manufactured. It just takes the raw video stream and manipulates it based on the content. So it's all software... And the same principles apply to every device that sends a real-time datastream from a imaging sensor. It doesn't matter how big or small the sensor is, who manufactured it, or how many pixels it has or doesn't have.  You make a good case for offering your services to Leica as a consultant... Link to post Share on other sites More sharing options...
piblondin Posted September 10, 2014 Author Share #16  Posted September 10, 2014 Like most lenses wide open. Solutions (easiest to most difficult): - AF camera. - Live View with focus peaking. - Know the focus field at any aperture of each of your lenses.  My understanding is that the 50 ASPH has a pretty flat field of focus-- Link to post Share on other sites More sharing options...
pop Posted September 10, 2014 Share #17 Â Posted September 10, 2014 So odd that you can't move the area of magnification....wouldn't focus peaking still be useful in this case, though? Â Yes, you can use focus peaking without any magnification at 50mm. You can trust me or those who claim it was poorly done and useless or you can go and try it for yourself. Link to post Share on other sites More sharing options...
mmradman Posted September 10, 2014 Share #18 Â Posted September 10, 2014 Use advantage of sensor high pixel count and crop, this is easy suggestion. Â Practice off centre focusing, this may take some effort. Â Wait for Leica with movable focus patch, fodder for Internet forums. Link to post Share on other sites More sharing options...
mmradman Posted September 10, 2014 Share #19 Â Posted September 10, 2014 Yes, you can use focus peaking without any magnification at 50mm. You can trust me or those who claim it was poorly done and useless or you can go and try it for yourself. Â Agree, it works. Â Good for those who prefer EVF focusing, only 50mm sings when used with optical VF. Link to post Share on other sites More sharing options...
pico Posted September 10, 2014 Share #20  Posted September 10, 2014 Recomposing works for me.  http://www.digoliardi.net/L1000108-greg01.jpg  1:1 pixel http://www.digoliardi.net/detail-tmp.jpg Link to post Share on other sites More sharing options...
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