L
Great to see you here. Join our insightful photographic forum today and start tapping into a huge wealth of photographic knowledge. Completing our simple registration process will allow you to gain access to exclusive content, add your own topics and posts, share your work and connect with other members through your own private inbox! And don’t forget to say hi!
May be because of the different focal lenghts between the two measurements?
Indeed that is what I said!lupo
your link shows the difference between the 17mm on the E-p1 and the 20mm of the GF1
Not the 20mm lens on both cameras as you link implies
K
The MTF differences are huge at all apertures, especially at the edge of the field. Since these lenses will typically be used for scenes and not portraits, this is important. The Panasonic clearly bests the Olympus. Unless you really need that extra 3mm (and you may) I'd go with the 20mm.There aren't big differences with the lens on each camera. The bigger difference is the CA shown at the bottom. Panasonic cameras correct for it and Olympus cameras don't but this is a case of having to read the text in the review where they say that the lens is not problematic from a CA point of view so you really shouldn't worry about it.
We are talking apples and oranges. Clearly the 20mm lens is better than the 17mm lens. In my post I was talking about the results of the same 20mm mounted on each body. Read through the post the first link is to a comparison of two different lenses. Further down is a link comparing the same lens on two different cameras.The MTF differences are huge at all apertures, especially at the edge of the field. Since these lenses will typically be used for scenes and not portraits, this is important. The Panasonic clearly bests the Olympus. Unless you really need that extra 3mm (and you may) I'd go with the 20mm.
That is very interesting, if the test is repeatable.
It is suggestive of there being no AA filter, or perhaps an over-weak filter, on the G1 as there appears to be frequencies above the Nyquist limit (aliasing artifacts).
Now when this occurs on some cameras, the owners praise it as the result of super lenses, but it is really just a form of sampling noise. The AA effect seems about perfectly tuned on the E-P1.
I really wonder if they did that test correctly.
-bob
Panasonic G1/GF1 have lighter AA filters than the E-P1, apparently.why is there a difference at sharpness (E-P1 lower),both have the same sensor or not?
Yogi