Jeff S Posted February 18, 2011 Share #21 Posted February 18, 2011 Advertisement (gone after registration) it would be stupid to buy a low light lens to use it as at f/4 to get sharp corners. Then it would be wiser to buy an f/2.0 or f/2.8 lens to begin with. While I generally agree with your post, this part seems overly simplistic to me. I own some relatively fast lenses such as the 50 Summilux asph to use for a variety of purposes, sometimes wide open IF desired or needed, but often not. I like the flexibility a fast lens provides, including the fact that, with Leica, it still comes in a relatively small package. Better for me than carrying multiple lenses for various situations. And the 50 Summilux has a wonderful quality at all apertures IMO (preferable to my former Summicron). The sweet spot is on the front of my camera. Jeff Link to post Share on other sites More sharing options...
Advertisement Posted February 18, 2011 Posted February 18, 2011 Hi Jeff S, Take a look here Sweet spot of lenses. I'm sure you'll find what you were looking for!
adan Posted February 18, 2011 Share #22 Posted February 18, 2011 Maybe I've spent too much time visiting dpreview - but over there, "sweet spot" of a lens usually refers to the part of the image used by cropped cameras (no fuzzy corners or color aberrations), rather than the best aperture. I'm with Jeff - I make full use of the aperture ring as needed. If I need f/1.4 for low light, that's what I buy, and then use the same lens at most of the other apertures in bright light. Link to post Share on other sites More sharing options...
Guest nafpie Posted February 18, 2011 Share #23 Posted February 18, 2011 Maybe I've spent too much time visiting dpreview - but over there, "sweet spot" of a lens usually refers to the part of the image used by cropped cameras (no fuzzy corners or color aberrations), rather than the best aperture. Thats what I had in mind when I read the thread title initially, also. But the term 'sweet spot' has - at teast - two different meanings -> Digital Shot: FIND YOUR LENS SWEET SPOT Not necessarily makes things easier... Link to post Share on other sites More sharing options...
bill Posted February 18, 2011 Share #24 Posted February 18, 2011 Not wishing to complicate matters further, but I can see an objective and a subjective element to this; the technical (objective) "sweet spot" where a given lens delivers optimum performance and the personal (subjective) "sweet spot" where the lens delivers the result that the photographer is trying to achieve. Maybe some of the debate so far is conflating the two? Regards, Bill Link to post Share on other sites More sharing options...
lars_bergquist Posted February 18, 2011 Share #25 Posted February 18, 2011 Not wishing to complicate matters further, but I can see an objective and a subjective element to this; the technical (objective) "sweet spot" where a given lens delivers optimum performance and the personal (subjective) "sweet spot" where the lens delivers the result that the photographer is trying to achieve. Maybe some of the debate so far is conflating the two? Regards, Bill Definitely, yes. And I said so. The irritating old man Link to post Share on other sites More sharing options...
russell Posted February 18, 2011 Share #26 Posted February 18, 2011 There is an answer to this, isn't there? It's either a) wide open for speed and effect f4 or f5.6 depending on which lens Link to post Share on other sites More sharing options...
Xmas Posted February 18, 2011 Share #27 Posted February 18, 2011 Advertisement (gone after registration) I wonder whether information exists regarding the so called "sweet spot" of Leica lenses? Yes it does, Leica and Zeiss publish MTF diagrams for current lenses, Hove have a cheap booklet for antiques 1930 to 2005. But sweet spots ignoring the earlier dialogue, are subjective, I can loan out Canon LTM lenses on outings to people who want a given signature, like a near water colo(u)r effect. On dull days I might use MC lenses on bright SC lenses. Leica Camera AG - Photography - LEICA ELMARIT-M 28 mm f/2.8 ASPH. Leica Camera and Lens Pocket Book ;Laney & Puts Hove Collectors Books Link to post Share on other sites More sharing options...
Overgaard Posted February 18, 2011 Share #28 Posted February 18, 2011 While I generally agree with your post, this part seems overly simplistic to me. I own some relatively fast lenses such as the 50 Summilux asph to use for a variety of purposes, sometimes wide open IF desired or needed, but often not. I like the flexibility a fast lens provides, including the fact that, with Leica, it still comes in a relatively small package. Better for me than carrying multiple lenses for various situations. And the 50 Summilux has a wonderful quality at all apertures IMO (preferable to my former Summicron). The sweet spot is on the front of my camera. Jeff Agree, I would go for low light/exotic lenses, and then use the f-stop for control of depth of field and sharpness (never as light control). But if the aim - and it is for a very few - to head out in mountains to shoot landscapes in sunshine, and never use a camera at night(clubs), I would recommend a f/4 lens for that. Link to post Share on other sites More sharing options...
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