misha Posted March 30, 2007 Share #1 Â Posted March 30, 2007 Advertisement (gone after registration) hi guys, Â from what i understood, many of you, also have this lense. what in your opinion are the "correct" (or what do you use) hyperfocal distances at lets say f5.6, f6.3 and f8? Â thanks misha Link to post Share on other sites More sharing options...
Advertisement Posted March 30, 2007 Posted March 30, 2007 Hi misha, Take a look here CV 15mm Hyperfocals... I'm sure you'll find what you were looking for!
egibaud Posted March 30, 2007 Share #2 Â Posted March 30, 2007 I got mine yesterday. I just did a few pics as I had no time. indoor at 4.5 the lense is just amazing. I am going on vacation tomorrow, I'll post pics when I come back. Â Eric Link to post Share on other sites More sharing options...
hdrmd Posted March 30, 2007 Share #3 Â Posted March 30, 2007 I have read somewheere on some thread that the lens is sharpest at F 6.3. Then if you set the focus at just this side of infinity, you have a hyperfocal distance of about 3 ft. to infinity. It may not be scientific, but it works very well Link to post Share on other sites More sharing options...
LJL Posted March 30, 2007 Share #4  Posted March 30, 2007 hi guys, from what i understood, many of you, also have this lense. what in your opinion are the "correct" (or what do you use) hyperfocal distances at lets say f5.6, f6.3 and f8?  thanks misha  Misha, I have been using the CV 15/4.5 for several months now on the M8, and love it. I have found mine to have outstanding performance at f6.3, though also very, very good at f5.6 and f8, as you ask. With respect to hyperfocal distance, I have been setting the distance marks betwen 2m and infinity at f6.3 and just shoot with it to get pretty much everything from things at my feet to infinity in focus. At f5.6 or f4.5, you do need to pick your focus point a bit more carefully, especially for things closer and for very far distance. At f8, almost everything is in focus from 1-2m to inifinity anyway so setting the focus between 2m and inifnity works well there also. These are just some of my casual observations. One can calculate the actual DOF and hyperfocal point for each aperture setting, and I have tried using the DOF calculator, but still find a bit of trial and error work best. The inifity focus may be a bit off on some shots if the lens mount is not screwed on fully, so that could impact some results. Just my observations so far.  LJ Link to post Share on other sites More sharing options...
woodyspedden Posted March 30, 2007 Share #5  Posted March 30, 2007 Here is another approach to focussing these wide beasts on the M8  The vertical tower is an old Leica rangefinder. You use it to determine distance to subject and then set the lens to that distance. Not hyperfocus of course but close to rangefinder coupling accuracy. The viewfinder is the Zeiss 21 and the lens is the new Zeiss 15 2.8.  Woody Spedden 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/20169-cv-15mm-hyperfocals/?do=findComment&comment=216147'>More sharing options...
misha Posted March 30, 2007 Author Share #6 Â Posted March 30, 2007 thanks for the advice, and v.impressive installation Link to post Share on other sites More sharing options...
gesper Posted March 30, 2007 Share #7  Posted March 30, 2007 Advertisement (gone after registration) Here is another approach to focussing these wide beasts on the M8 The vertical tower is an old Leica rangefinder. You use it to determine distance to subject and then set the lens to that distance. Not hyperfocus of course but close to rangefinder coupling accuracy. The viewfinder is the Zeiss 21 and the lens is the new Zeiss 15 2.8.  Woody Spedden  Is that a Markins Q3 Emille ballhead? Thats what I use too, and I love it. Link to post Share on other sites More sharing options...
photorunner Posted March 30, 2007 Share #8 Â Posted March 30, 2007 How do you like the Zeiss 15mm? Are you using an IR filter with it and did you code it? How are the images? How's the Zeiss 21 compared to the Leica 21-24-28 viewfinder? Â Herb Link to post Share on other sites More sharing options...
terrycioni Posted March 30, 2007 Share #9  Posted March 30, 2007 Great lens, fun to use on the M8 - depth of focus is unreal! I like to shoot handheld with it. The 12mm CV is also fun to use and can produce great results on the M8. The images are both handheld. Top shot F11 at infinity. Bottom shot wide-open also at infinity.  Cheers. Terry. 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/20169-cv-15mm-hyperfocals/?do=findComment&comment=216212'>More sharing options...
photorunner Posted March 30, 2007 Share #10 Â Posted March 30, 2007 Wow! very nice indeed. Are you using any IR filter on your lens? Any major post processing tweaking on the image? Â Herb Link to post Share on other sites More sharing options...
terrycioni Posted March 30, 2007 Share #11 Â Posted March 30, 2007 Hi Herb, Â No UV/IR filters. I use C1 Pro exclusively with the Jamie's profile(s). I have not spent anytime worrying about cyan corner et al... Not a whole lot of post processing involved. My only issue is the WHITE BALANCE is unpredictable. I shoot DNG only. Â Cheers. Terry. Link to post Share on other sites More sharing options...
dseelig Posted March 30, 2007 Share #12 Â Posted March 30, 2007 Is one of these shots withthe voigtlander 12 thanks David Link to post Share on other sites More sharing options...
terrycioni Posted March 30, 2007 Share #13  Posted March 30, 2007 Is one of these shots withthe voigtlander 12 thanks David  Both shots with the CV 15mm. I have a few shots with the CV 12mm in another thread on the forum. I like both lenses - they are just so much fun to use.  Terry. Link to post Share on other sites More sharing options...
Skippy Sanchez Posted March 30, 2007 Share #14 Â Posted March 30, 2007 My technique for hyperfocal seems simple, effective and fast: Â 1- pick my f-stop (let's say 5.6) 2- set the infinity marker at that f-stop on the lens barrel 3- everything from infinity to whatever distance shows on the close-focus side (@ 5.6) of the lens barrel will be acceptably sharp. Â this has work very well for me for grab & from-the-hip shots using 15, 21, 28 or 40mm lenses. obvoulsly i wouldn't trust it on a noctilux or 90/f2. Link to post Share on other sites More sharing options...
glenerrolrd Posted March 30, 2007 Share #15 Â Posted March 30, 2007 Here is another approach to focussing these wide beasts on the M8Â The vertical tower is an old Leica rangefinder. You use it to determine distance to subject and then set the lens to that distance. Not hyperfocus of course but close to rangefinder coupling accuracy. The viewfinder is the Zeiss 21 and the lens is the new Zeiss 15 2.8. Â Woody Spedden Woody How do you like the Zeiss 15mm? Can you compare it to the WATE? How much do you feel the lack of rangefinder coupling affects the 15mm performance? Roger Link to post Share on other sites More sharing options...
wattsy Posted March 31, 2007 Share #16  Posted March 31, 2007 It's a fun lens and I tend to use it as a snap shot lens (it's far too wide for most of my work and the inevitable converging verticals drive me insane). Unless a key element of the image is only a few yards away I simply leave the lens focussed to infinity and stop down to F8. 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/20169-cv-15mm-hyperfocals/?do=findComment&comment=216575'>More sharing options...
misha Posted March 31, 2007 Author Share #17 Â Posted March 31, 2007 My technique for hyperfocal seems simple, effective and fast:Â 1- pick my f-stop (let's say 5.6) 2- set the infinity marker at that f-stop on the lens barrel 3- everything from infinity to whatever distance shows on the close-focus side (@ 5.6) of the lens barrel will be acceptably sharp. Â this has work very well for me for grab & from-the-hip shots using 15, 21, 28 or 40mm lenses. obvoulsly i wouldn't trust it on a noctilux or 90/f2. Â Â got it. so if i was to do so on the 15mm, this would leave me somewhere between 1 and 2m, closer to 1. right? Â thanks m Link to post Share on other sites More sharing options...
finkaudio Posted March 31, 2007 Share #18  Posted March 31, 2007 got it. so if i was to do so on the 15mm, this would leave me somewhere between 1 and 2m, closer to 1. right? thanks m   Hi Michael,  be carful with those Hyperfocal settings - they simply don't work on M8 and CV15.  I had lot's of problems doing it that way. Try to search for the thread about it with pictures and examples. Nowadays I set the distance is the nearfiled by guessing and something between 2m and infinity for the rest.  Best regards  Karl-Heinz Link to post Share on other sites More sharing options...
lars_bergquist Posted March 31, 2007 Share #19 Â Posted March 31, 2007 D.o.f. scales are obsolete. They are computed from an assumed largest permissible circle of confusion of 1/30th of a millimeter, and that in turn assumes that the linear enlargement from neg to print will be at most three times! That may have been true when the Leica was introduced eighty years ago. It is not true today, and has not been for the last sixty years. Â Knowing this, many photographers used the next marked stop on the scale, i.e. when ascertaining the d.o.f. for, say, 8 they used the markings for 5.6 instead, resulting in a narrower zone of acceptable sharpness. Even so, many felt that this was not enough. Now, with a 18x27 mm sensor format, the linear enlargement to any pretedetermined print format is correspondingly larger, and the best method is to use a c.o.c. that is just half the diameter, 1/60 mm. Now you must use half the f-stop number: for a working aperture of 8, read d.o.f. at f:4! Â F 6.3 is just one third of a stop up from 5.6, so use that. Now this of course means that much of the beloved zone focusing technique goes down the drain. When in doubt, point focus. If I need reasonable sharpness at infinity I use 2 m and f:8. Â The focusing scale of the C/V 15 is a bit sparse. Note however that 4 m on the scale, though not marked, would be exactly halfway from 2 m to infinity, while 8 m again lies exactly halfway between 4 m and infinity. Happy headache! Â The old man from the Age of Guess Focusing Link to post Share on other sites More sharing options...
lars_bergquist Posted March 31, 2007 Share #20  Posted March 31, 2007 I went to the sources and dug out the mathematical formula for hyperfocal focusing. Fear not, it is easy:  H = (F · F) / (f · d)  where H is the hyperfocal distance, F is the focal length, f is the aperture, d is the circle of confusion. Keep everything in either millimeters or meters, and use a circle of confusion of 0.016 or 0.017 mm. The near limit of the depth of field is of course H/2.  If the focal length is 15 mm and the aperture is 6.3, then the hyperfocal distance is 2 meters and you should be home free from 1 m to infinity.  The old man from the Age of Guess Focusing Link to post Share on other sites More sharing options...
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