the warrior Posted August 28, 2014 Share #1 Posted August 28, 2014 Advertisement (gone after registration) My pre asph leica 50mm lens has shifted focus. As I can adjust the focus? There is a video to see how to do ?. Thank you. Quote Link to post Share on other sites More sharing options...
Advertisement Posted August 28, 2014 Posted August 28, 2014 Hi the warrior, Take a look here 50mm lens has shifted focus. Help.. I'm sure you'll find what you were looking for!
IWC Doppel Posted August 28, 2014 Share #2 Posted August 28, 2014 If your talking about the Summilux I have had two of these lenses and they do focus shift, typically between f1.4 and f2.8. I love this lens and prefer it set up at f1.4 and accept it will be back focussing at f2-2.8 at f4 and more you won't really see a difference. You can't adjust the inherent design, after testing you can only adjust your shooting to suit. Looks quiet alarming on a test sheet, in practice I can deal with it for my style of photography Quote Link to post Share on other sites More sharing options...
elmars Posted August 28, 2014 Share #3 Posted August 28, 2014 If your talking about the Summilux I have had two of these lenses and they do focus shift, typically between f1.4 and f2.8. I love this lens and prefer it set up at f1.4 and accept it will be back focussing at f2-2.8 at f4 and more you won't really see a difference. You can't adjust the inherent design, after testing you can only adjust your shooting to suit. Looks quiet alarming on a test sheet, in practice I can deal with it for my style of photography Yes, this is my experience too! Elmar Quote Link to post Share on other sites More sharing options...
the warrior Posted August 28, 2014 Author Share #4 Posted August 28, 2014 thanks, the question is not it. I am looking for a video to remove and adjust summilux pre asph leica that this focus adjustment. Quote Link to post Share on other sites More sharing options...
IWC Doppel Posted August 28, 2014 Share #5 Posted August 28, 2014 I don't understand the question. You can have the lens adjusted to be accurate at f1.4 or f2 but not both the design focus shifts enough to be 'out' on a digital sensor you can't change that. You will need to send the lens away for adjustment, it's not something you can do yourself Are you sure your body is accurately calibrated Quote Link to post Share on other sites More sharing options...
the warrior Posted August 28, 2014 Author Share #6 Posted August 28, 2014 It is a problem of the lens. A slight displacement of the internal system of brass screw and the group. I do not think it very difficult to adjust myself, I have tools and I'm mechanical precision. But I do not know how it's done. There are similar videos on youtube, but I see nothing of summiux 50mm. Maybe someone knows anything about this ?? Some photographs of the process ?? Thank you Quote Link to post Share on other sites More sharing options...
luigi bertolotti Posted August 28, 2014 Share #7 Posted August 28, 2014 Advertisement (gone after registration) I think that a bit of confusion has arisen from the OP statement of "shifted focus".... it seems to me he means that lens simply doesn't anymore focuses right, not that it suffers of "focus shift" as we usually intend the term (displacement of the focus plane while stopping down the lens) Warrior, is not impossible to dismount by yourself a Summilux... but reassembly RIGHT is a very critical operation... even if old, it had tolerancing of the 10th of millimeters... if the glass is good, it is better to have it fixed by a lab...recently, to give you an idea, I paid around 240 Euros to have an old Leitz lens dismounted, polished, reassembled perfectly (no spares were needed, and the value of the lens was around 5-6x the cost... not so dissimale from a good old Summilux 50 preasph) Quote Link to post Share on other sites More sharing options...
the warrior Posted August 28, 2014 Author Share #8 Posted August 28, 2014 Thank you all, I solved the problem. Just poorly mounted the screw threads of the group in a place that was not theirs, and then the image was displaced with the rangefinder. Thank you. Quote Link to post Share on other sites More sharing options...
tobey bilek Posted September 5, 2014 Share #9 Posted September 5, 2014 If your talking about the Summilux I have had two of these lenses and they do focus shift, typically between f1.4 and f2.8. I love this lens and prefer it set up at f1.4 and accept it will be back focussing at f2-2.8 at f4 and more you won't really see a difference. You can't adjust the inherent design, after testing you can only adjust your shooting to suit. Looks quiet alarming on a test sheet, in practice I can deal with it for my style of photography No wonder I never found one that was sharp more open then 6.8. Quote Link to post Share on other sites More sharing options...
lct Posted September 6, 2014 Share #10 Posted September 6, 2014 Never got the least focus shift with my Summiluxes 50/1.4 pre-asph folks. I wonder if there is some confusion with the Zeiss 50/1.5 here. Quote Link to post Share on other sites More sharing options...
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