Perspectics Posted October 4, 2007 Share #1 Posted October 4, 2007 Advertisement (gone after registration) Quick beginners question: Yesterday a coded, new 35mm cron has arrived and after some test shots wondered why objects at infinity (more than 50 meters away) are in focus just before physical infinity position of the lenses. I did test shots that prove that my viewfinder is actually correct. The object is not in focus at the physical infinity position but just before. Is that normal? Of course I tested for back focus problem also but my viewfinder seems to be perfectly adjusted and luckily shows the truth at all distances. (Did all tests with aperture 2 so far.) Link to post Share on other sites More sharing options...
Advertisement Posted October 4, 2007 Posted October 4, 2007 Hi Perspectics, Take a look here Summicron 35mm with "false" infinity position. I'm sure you'll find what you were looking for!
Shootist Posted October 4, 2007 Share #2 Posted October 4, 2007 Infinity is just what it is. 50 meters is not infinity so something at 50 meters would be short of the inifinity stop. Link to post Share on other sites More sharing options...
jaapv Posted October 4, 2007 Share #3 Posted October 4, 2007 In the Leica world, infinty is at least five kilometers away. 50 meters certainly needs a tad of focussing.There may be a mountain standing in your way to make exact testing of infinity impossible:D Link to post Share on other sites More sharing options...
aj55 Posted October 4, 2007 Share #4 Posted October 4, 2007 Try a not too bright star or perhaps the Moon. Link to post Share on other sites More sharing options...
Perspectics Posted October 4, 2007 Author Share #5 Posted October 4, 2007 You are very correct... 50 meters were not enough. Kind of embarrassing, but the upside is everything is just working fine :-) Thanks all! Link to post Share on other sites More sharing options...
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