laffertyphotography Posted February 1, 2014 Share #1 Posted February 1, 2014 Advertisement (gone after registration) I have just bought this screw mount lens for my iiif. I want to use it for portraiture. I also have a Viooh which I believe I need to frame a 90mm shot properly. Apologies if this is dumb and I probably just need to go and experiment but... if I have the camera set up on a tripod and frame my shot with the viooh (In theory with the subjects eyes about two thirds of the way up the shot,) I am struggling to see how I can make sure that the critical bit of the photo ie the eyes are in focus as the rangefinder will be sighted further down the subjects face. If I focus first then frame second the moving of the camera to frame will surely put the shot and in this case, critically the eyes, out of focus. John Link to post Share on other sites More sharing options...
Advertisement Posted February 1, 2014 Posted February 1, 2014 Hi laffertyphotography, Take a look here Elmar f4 90mm screw mount lens and focusing. I'm sure you'll find what you were looking for!
earleygallery Posted February 1, 2014 Share #2 Posted February 1, 2014 I have just bought this screw mount lens for my iiif. I want to use it for portraiture. I also have a Viooh which I believe I need to frame a 90mm shot properly. Apologies if this is dumb and I probably just need to go and experiment but... if I have the camera set up on a tripod and frame my shot with the viooh (In theory with the subjects eyes about two thirds of the way up the shot,) I am struggling to see how I can make sure that the critical bit of the photo ie the eyes are in focus as the rangefinder will be sighted further down the subjects face. If I focus first then frame second the moving of the camera to frame will surely put the shot and in this case, critically the eyes, out of focus. John Unlikely at f4 or less, certainly it's never been an issue for me. You have the gear so shoot a test roll and decide for yourself. Link to post Share on other sites More sharing options...
laffertyphotography Posted February 1, 2014 Author Share #3 Posted February 1, 2014 Unlikely at f4 or less, certainly it's never been an issue for me. You have the gear so shoot a test roll and decide for yourself. Hi James thanks for the reply. I understand the second sentence (which I agree with) but not the first. Could you elaborate. Many thanks John Link to post Share on other sites More sharing options...
laffertyphotography Posted February 1, 2014 Author Share #4 Posted February 1, 2014 James. I follow. Sorry. I have re-read. From F4 the DOF will be deeper and will give me some slack? John Link to post Share on other sites More sharing options...
earleygallery Posted February 1, 2014 Share #5 Posted February 1, 2014 That's it. F4 gives a little DOF with a 90mm lens. I don't think you'll see any problem. I'm happy to be proven wrong of course! Link to post Share on other sites More sharing options...
luigi bertolotti Posted February 2, 2014 Share #6 Posted February 2, 2014 I agree that you can stay rather comfortable : with 90mm at f4, on film, you can take for good the figures given by a DOF calculator (dofmaster.com) : considering that with a 90mm a full-face portrait is about 1.8 meters (horizontal) or 1.3 (veritical) , this means a DOF of 9cm and 5 cm respectively... make your own evaluation, but imho, with camera on tripod, even the last figure (+- 2,5 cm front/back) is in a rather safe area. Link to post Share on other sites More sharing options...
jc_braconi Posted February 2, 2014 Share #7 Posted February 2, 2014 Advertisement (gone after registration) if I have the camera set up on a tripod and frame my shot with the viooh (In theory with the subjects eyes about two thirds of the way up the shot,) I am struggling to see how I can make sure that the critical bit of the photo ie the eyes are in focus as the rangefinder will be sighted further down the subjects face. If I focus first then frame second the moving of the camera to frame will surely put the shot and in this case, critically the eyes, out of focus. John I do not understand how you can confuse framing and focusing. You first frame with viewfinder (note that on the VIOOH you have 2 refering slot on the frame ring : one for short distance ie - 2m : the short one and the other one, long from 2 to infinity and an adjustable parallax distance scale operated by a lever ramp). Next you focuse with the range finder in the camera where you want on the face of your portraiture subject and shoot. Link to post Share on other sites More sharing options...
laffertyphotography Posted February 2, 2014 Author Share #8 Posted February 2, 2014 "I do not understand how you can confuse framing and focusing." I haven't "You first frame with viewfinder (note that on the VIOOH you have 2 refering slot on the frame ring : one for short distance ie - 2m : the short one and the other one, long from 2 to infinity and an adjustable parallax distance scale operated by a lever ramp)." I know "Next you focuse with the range finder in the camera where you want on the face of your portraiture subject and shoot." When one looks through the rangefinder window when focusing not all of the image framed in the viooh is available to focus on as it is a magnified image. Now as I said and as James suggests it may be that when I experiment all will become clear. However, it might be that a framed close up portrait when looked at through the magnified rangefinder window will not give me the option of focusing on the part of the image I want, perhaps in this case, although I don't know- yet, the eyes ? The DOF answers by James and Luigi helpfully deal with this. John Link to post Share on other sites More sharing options...
jc_braconi Posted February 2, 2014 Share #9 Posted February 2, 2014 I donot know what will be the distance you plan to respect for your project but too much close donot give good results for portraiture better to stay at 2 meter and with a far backyard to get a bouquet. the best aperture for the Elmar 4_90 is f11, next you can crope the frame with your enlarger or computer. You can also use a rule as people do for movie camera to be sure of the distance. Link to post Share on other sites More sharing options...
laffertyphotography Posted February 2, 2014 Author Share #10 Posted February 2, 2014 Thanks JCB Link to post Share on other sites More sharing options...
giordano Posted February 4, 2014 Share #11 Posted February 4, 2014 Here's the drill: 1) Look through the viewfinder and frame the picture. This gets the camera in the right position. 2) Look through the rangefinder, aim at the point you want in sharpest focus, and focus the lens. 3) Go back to the viewfinder, re-frame (without significantly changing the distance between camera and subject) and release the shutter. While doing all this, make sure that the parallax adjustment on the VIOOH is set to the appropriate distance, and that the 9cm mark on the zoom ring is set against the appropriate index mark (the long one for normal use, the short one for distances closer than about 1.5m). Oh, and be aware of any changes in the light (e.g. if the sun goes behind a cloud). With practice it's not nearly as difficult as this makes it seem:). Link to post Share on other sites More sharing options...
wizard Posted February 4, 2014 Share #12 Posted February 4, 2014 This discussion is proof of the fact that the combined brightline viewfinder/rangefinder as first used by Leica in their M3 model was indeed a big step forward . Cheers Andy Link to post Share on other sites More sharing options...
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