Guest mc_k Posted March 14, 2010 Share #21 Posted March 14, 2010 Advertisement (gone after registration) thanks for the details, I had not read your last post. Link to post Share on other sites More sharing options...
Advertisement Posted March 14, 2010 Posted March 14, 2010 Hi Guest mc_k, Take a look here Focus shift tests with 75/1.4 lux @ 1.5m. I'm sure you'll find what you were looking for!
Guest mc_k Posted March 15, 2010 Share #22 Posted March 15, 2010 well since the test determines focus shift, how many cm focus shift did you get between f/1.4 and f/8 ?... You said the usual focus test chart, which has a scale, can't be used for measuring errors. Your target has a scale and I am interested in how you are reading it for your particular 75mm test. I don't see how you can make those corrections if you don't actually measure the errors or shifts. Thanks Link to post Share on other sites More sharing options...
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