Thanks for the thorough analysis, Washael! I suspect you are wrong on one point, though . . the Noct feels both heavier and bulkier than the APO 90, which is another favorite glass of mine . . :-)
The exposure time was critical here as the dog is moving his head, and even at 1/800 there is slight motion blur. At f2 the exposure time would have to be 1/125 (ISO200) but you could have used ISO 1600 on the NEX-7 for the same time with a Summicron 90. You would get the same DOF at 90mm f2 from a distance of 12 feet, but the FOV would be less and the horizontal crop tighter, but for this subject it would be okay. AN f2 90mm apo-Summicron would be heavier and bulkier, but quite a bit less expensive. For scenes that need a wider FOV with short DOF, there is no substitute for the 50mm 0.95 Noct.
I had to use three applications to figure all these numbers out.
Great picture!
Every now and then the rational half of me attacks the other half for clinging to the Noct; all that hard earned money locked up, not to mention the insane weight! But . . the difference between 1,4 and 0,95 sometimes (often) makes wonders. Many heartfelt thanks!
t.
I had to use three applications to figure all these numbers out.
Great picture!