Is this the expected corner performance of Olympus M.Zuiko ED 75-300mm f4.8-6.7 II ?

Started Mar 27, 2014 | Questions thread
Anders W Forum Pro • Posts: 21,468
Re: YES, it is expected
4

CrisPhoto wrote:

Hi Anders,

Olympus itself says that the second lens has one ED element less. And me as well several others say that the new lens is sharper at the long end. But you are right, our observation could be sample variance. But only someone like Roger from lensrentals has enough lenses to rule out sample variation.

Where to they say that the second version has one ED element less? Here are the lens designs as presented by Oly themselves and they are identical as far as I can see: 18 elements in 13 groups, one super ED element, two ED elements, three HR elements. The manufacturer MTF charts are identical as well.

http://asia.olympus-imaging.com/products/dslr/mlenses/75-300_48-67/

http://asia.olympus-imaging.com/products/dslr/mlenses/75-300_48-67ii/

Unless Oly provides false information about the optical design of the two versions, that leaves sample variation as the only possibility. Besides, if they had taken away an ED element in the new version, that would lead us to expect worse rather than better performance from that version.

 Anders W's gear list:Anders W's gear list
Panasonic Lumix DMC-G1 Olympus OM-D E-M5 Olympus E-M1 Panasonic Lumix G Vario 14-45mm F3.5-5.6 ASPH OIS Panasonic Lumix G Vario 7-14mm F4 ASPH +28 more
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