Originally posted by JVi Yoshihiko Takinami's methodology is detailed here:
http://www.takinami.com/yoshihiko/photo/lens_test/procedure.html .... and here :
PDML Lens Testing Procedure . I take it his averages come from the process described in the first link where measurements are taken from many observations.
All I was looking for was a good landscape lens.
The K 28 f2, with its greater fall off would be ideal for central objectivity, as in a movies, with the surroundings "blurred" out. I read that the lens was designed with movie photography in mind, thus the "Hollywood 28" moniker often applied to it. Yes, the K 28 f2 is far more flexible in nature having great central sharpness and capabilites at all f stops superior to all others in the list. What I am intersted in is trying out is the M 28 f2, its successor.
Thanks for the link to methodology - will check it out. Knowing the meaning behind the results through the method is paramount.
It is fair to say that every lens will be playing to a certain strength. The K 28 f2 does certain things extremely well (e.g. close focusing and 3D effect) and other things well (e.g. landscape). The light fall off is almost completely gone by f3.5 so this 'con' is limited to its f stop difference.
The K 28 f3.5 cannot do close focusing and 3D effect any where near as good as the K28 f2, but, it does do landscape very well (and is either on par or better than the K28 f2). All round the K28 f2 is a much better lens but is very expensive. If landscape is your thing then perhaps you would easily recommend the K28 f3.5 over the f2 sibling (price!).
Back to the OP, this discussion is probably a little superfluous (as price is an important factor). But on the other hand, knowing what your expectations are and what the lens is likely to deliver is exactly the point (i.e. why buy a lens because it is cheaper but it doesn't do what you want).
I recently obtained the M28/2 and am just starting to test it. Generally, the M lenses do not satisfy me and leave me wanting more. I do expect this lens to not be as good as the A28/2 and early results suggest this. I will take a few shots and add to this thread if that helps.