(08-04-2020, 10:49 AM)Klaus Wrote: I reckon the 100-400mm doesn't offer sync IS because it's a Sigma lens - possibly featuring Sigma's miserable OS (not compatible to sync-IS ...) - which would explain the mediocre efficiency rating.
For better samples - go here:
And while we are at ranting - why does this lens cost $1500 and the near-identical Sigma costs $800?
Sure there's the economy of scale - but it's also a way to push a system into oblivion.
It actually is cheaper over here than the PL 100-400 is, while the PL 100-400 is several years old already.
If it really is the same as the Sigma, one could always get the Sigma with an adapter, I guess.
However, even if it is, it likely has some Oly sauce as well. I never had any focusing problems with Oly lenses, other than occasional focusing speed, mostly indoors with non-pro lenses, but I have always had problems with focusing Sigma lenses, to the degree that I will never buy another Sigma lens branded as Sigma.
Kind regards, Wim
Gear: Canon EOS R with 3 primes and 2 zooms, 4 EF-R adapters, Canon EOS 5 (analog), 9 Canon EF primes, a lone Canon EF zoom, 2 extenders, 2 converters, tubes; Olympus OM-D 1 Mk II & Pen F with 12 primes, 6 zooms, and 3 Metabones EF-MFT adapters ....
(08-05-2020, 12:17 PM)Rover Wrote: If the Olympus 100-400 is really a Sigma design (as I've heard loads of times already) does that mean it's an FF lens in disguise?
Yes. The design schema is identical to this one:
The dimensions and weight also match - plus-minus a little due to the "extended" tube and Oly styling.
FWIW, it's not the first outsourced lens - the Olympus 75mm f/1.8 is also based on a Sigma patent it seems.
Cooperations between manufacturers aren't unusual anyway. Think of Tamron/Tokina & Pentax.
And Tamron has been "known" to do designs for Sony I think. There are also rumors that the Batis lenses are made by Tamron.
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