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November 28, 2012 at 11:19 pm #4929
reality check
Member

Every lens has a sweet spot.  Sweet spots are never found wide open.

Example: my fastest lens ( not lowest, like PP refers to it) is a 50mm 1.4. The sweet spot is at 2.8  any wider and it just isn’t going to be tack sharp.

There is a lot more to depth of field than aperture.  Time to google and brush up on some basics.  Good luck

oh and camera clickers exercise is a good one, be sure to give it a try.

also you can find your lens sweet spot by shooting in AV setting up a tripod to eliminate factors such as camera shake. And shooting an object  at all stops and comparing.