farnz Posted August 27, 2010 Share #41 Posted August 27, 2010 Advertisement (gone after registration) Carlos, Thanks for doing your test and posting the results. It appears from your pictures above that the Elpro-D has better resolution than the LC-69 and therefore reveals more detail. The Elpro-D appears slightly warmer than the LC-69 too. It's interesting to note that at f/11 the LC-1's definition is limited by diffusion and the pictures from both lenses are softer than those at f/5.6. Pete. Link to post Share on other sites More sharing options...
Advertisement Posted August 27, 2010 Posted August 27, 2010 Hi farnz, Take a look here Leica Elpro-D E69. I'm sure you'll find what you were looking for!
jrethorst Posted August 27, 2010 Share #42 Posted August 27, 2010 Carlos, could you take a photo or two with the macro lenses, and then a photo of the same subject with neither? There is a color difference in the screwdriver and I wonder what color just the camera would produce. Link to post Share on other sites More sharing options...
carlosecpf Posted September 3, 2010 Share #43 Posted September 3, 2010 Things are busy here on my side and, to be honest, this kind of testing is so boring to do! I feel pity for the Dpreview guys. I will try to put something together over the weekend, Link to post Share on other sites More sharing options...
John Thawley Posted September 3, 2010 Share #44 Posted September 3, 2010 Things are busy here on my side and, to be honest, this kind of testing is so boring to do! I feel pity for the preview guys. I will try to put something together over the weekend, I think you should go do something you like to do. This has become somewhat of a moot point IMO. Go have some fun. JT Link to post Share on other sites More sharing options...
carlosecpf Posted September 3, 2010 Share #45 Posted September 3, 2010 Hey John, I agree. I will be better off enjoying my free time taking photos. The main test and its results are already available on my previous posts. Anything beyond that will add, if any, a marginal benefit to an already moot discussion. Link to post Share on other sites More sharing options...
carlosecpf Posted September 3, 2010 Share #46 Posted September 3, 2010 It's interesting to note that at f/11 the LC-1's definition is limited by diffusion and the pictures from both lenses are softer than those at f/5.6. Pete. Hi Pete, I was surprised by this finding as well! I was intrigued by that and I don't really understand why that happens, technically speaking. Link to post Share on other sites More sharing options...
John Thawley Posted September 4, 2010 Share #47 Posted September 4, 2010 Advertisement (gone after registration) Hi Pete, I was surprised by this finding as well! I was intrigued by that and I don't really understand why that happens, technically speaking. Funny.... while I have no idea of why this is.... but personally, I find the sweet spot on the Digilux 2 to be at f/5.6. I do shoot f/8 on occasion.. but for the most part I'm not that fond of shooting at f/11 - I keep an ND filter with me all the time. JT Link to post Share on other sites More sharing options...
farnz Posted September 4, 2010 Share #48 Posted September 4, 2010 Hi Pete, I was surprised by this finding as well! I was intrigued by that and I don't really understand why that happens, technically speaking. Carlos, I notice now that I wrote "diffusion" but I meant diffraction. As light rays pass close to the edges of the diaphragm they bend slightly. So at the focal point, rays that don't pass close to the edge of the diaphragm will focus in round dots which produces a sharp image but dispersion of the light rays that pass close to the edge of the diaphragm will focus in fuzzier dots and produce a softer image. At wider aperture values the softness caused by diffraction is less noticeable because the proportion of light passing close to the edge of the diaphragm is small compared to the volume of light passing through the aperture. But at small apertures the proportion of diffracted light to the volume of light passing through the diaphragm is much larger so the diffraction effect becomes more visible. Pete. Link to post Share on other sites More sharing options...
dovla Posted September 10, 2010 Share #49 Posted September 10, 2010 Does D2 has zone AF? Where you can select where to focus? This has spring to my mind seeing Carlos photo has focus on the tip of the screwdriver. Cheers Vlad Link to post Share on other sites More sharing options...
farnz Posted September 10, 2010 Share #50 Posted September 10, 2010 Does D2 has zone AF? Where you can select where to focus? This has spring to my mind seeing Carlos photo has focus on the tip of the screwdriver. Cheers Vlad Vlad, Yes, by focussing on an object in the centre of the vf with the shutter release half-pressed, holding the half-press and recomposing. Pete. Link to post Share on other sites More sharing options...
dovla Posted September 10, 2010 Share #51 Posted September 10, 2010 Vlad, Yes, by focussing on an object in the centre of the vf with the shutter release half-pressed, holding the half-press and recomposing. Pete. Ahh i see, now i get it! Thanks for the tip Pete. Cheers Vlad Link to post Share on other sites More sharing options...
carlosecpf Posted September 11, 2010 Share #52 Posted September 11, 2010 Carlos, I notice now that I wrote "diffusion" but I meant diffraction. As light rays pass close to the edges of the diaphragm they bend slightly. So at the focal point, rays that don't pass close to the edge of the diaphragm will focus in round dots which produces a sharp image but dispersion of the light rays that pass close to the edge of the diaphragm will focus in fuzzier dots and produce a softer image. At wider aperture values the softness caused by diffraction is less noticeable because the proportion of light passing close to the edge of the diaphragm is small compared to the volume of light passing through the aperture. But at small apertures the proportion of diffracted light to the volume of light passing through the diaphragm is much larger so the diffraction effect becomes more visible. Pete. Pete, Thank you so much for the thorough explanation. Really helpful! Link to post Share on other sites More sharing options...
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