Comments on: Things You Should Know About Your Lenses, But May Not

By: Mini

Mini — Tue, 20 Dec 2011 14:10:22 +0000

This article is also available in German.

Thanks for mentioning after i have already read THE WHOLE ARTICLE in English!
Anyway there are some interesting facts in here.
Greetings

By: Jacek Z.

Jacek Z. — Tue, 01 Nov 2011 20:12:02 +0000

One thing that seems closely connected, but might be missing on page 4 is “Aperture and Shutter Values Aren’t Totally Accurate”. For example, switching a 50 mm prime from f/4 and 1/500s to f/5.6 and 1/250s on the same object the amount of light coming to the sensor – at least theoretically – should be equal. But often IT ISN’T.

So… either something is not too accurate with the shutter speed, or the lens diaphragm mechanism doesn’t work perfectly, letting more or less light than declared. Let it be just 1/3 EV. Small difference, but a difference, especially when this “pleasing circular aperture” gets a bit oval at some values.

By: David

David — Thu, 26 May 2011 05:47:26 +0000

That bit about the magical wizard’s tube made me laugh. Oddly, my TC is the only lens I regret buying. Never seem to use the thing; never willing to sully the performance of the base lens.

By: Walter

Walter — Sun, 20 Mar 2011 16:57:18 +0000

Ugh, the rattling IS.

It turns out that Olympus sensor-shift IS systems calibrate/reset themselves every time you turn the camera off, which makes a rattling noise. Easily the most common newbie question on the 4/3 forums over at DPReview is “I got this E-whatever and it’s great, but it makes this horrid rattling noise every time I turn it off, is it broken?”