minks73 Posted July 8, 2009 Share #1 Posted July 8, 2009 Advertisement (gone after registration) I have noticed that a on lens that I have recently bought second hand - the focus dial would actually turn to a point approx. 7mm past the line on which minimum distance required to focus is marked. (i.e. this summilux lens has 1m mark as the minimum distance required to focus which the lens focus dial would turn past by a good 7mm. Shouldn't the focus dial stop at or at least very close to the maximum/minimum focus distance marks? Your help is much appreciated. Link to post Share on other sites More sharing options...
Advertisement Posted July 8, 2009 Posted July 8, 2009 Hi minks73, Take a look here Leica Lens Question. I'm sure you'll find what you were looking for!
pop Posted July 8, 2009 Share #2 Posted July 8, 2009 Mine (35mm) is just back from CLA. It has scales both in m and ft. Focussing stops at just below 3ft or some 5mm past the 1m mark. Link to post Share on other sites More sharing options...
doubice Posted July 9, 2009 Share #3 Posted July 9, 2009 If the infinity mark lines up with the focusing index line, there is nothing wrong with the lens. All Leica lenses turn slightly past the minimum focus mark, be it 1m or 0.7m. Use the lens and enjoy it...... Best, Jan Link to post Share on other sites More sharing options...
masjah Posted July 9, 2009 Share #4 Posted July 9, 2009 If the infinity mark lines up with the focusing index line, there is nothing wrong with the lens. All Leica lenses turn slightly past the minimum focus mark, be it 1m or 0.7m. Use the lens and enjoy it...... Best, Jan Some long lenses are designed also to focus past infinity (I believe to allow for expansion with a large lens), but, as Jan implies, putting the infinity sign against the focus index line always sets the focus to infinity. Link to post Share on other sites More sharing options...
doubice Posted July 9, 2009 Share #5 Posted July 9, 2009 Some long lenses are designed also to focus past infinity (I believe to allow for expansion with a large lens), but, as Jan implies, putting the infinity sign against the focus index line always sets the focus to infinity. That is correct; my 4.8/280mm Telyt-V is designed like that and it is indeed to allow for thermal expansion. Focusing was done on the screen of the Visoflex so, when the focused image was sharp in the Viso's finder, it was sharp on the film (sensor) plane too - no matter where the distance scale was in relation to the focus index. I believe however, that the OP's lens was not one designed for the Visoflex. Also, his 'beef' was that the focusing ring moved past the indicated minimum focus distance. This is normal on all lenses, whether ones designed for the Visoflex, or not. Best, Jan Link to post Share on other sites More sharing options...
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