Let's be clear, the ONLY thing about E-M1 that matters is...

Started Aug 28, 2013 | Discussions thread
SHood
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Re: Let's be clear, the ONLY thing about E-M1 that matters is...
In reply to Jon Stock, Aug 28, 2013

Jon Stock wrote:

peevee1 wrote:

... its AF tracking speed.

If it can do reliable 9+ fps tracking with 90-20/2.8, it competes with $6,700 1Dx (+ $13K 200-400/4 1.4 Extender to replace that $6,000 90-250).

If it can only do 4 fps or not reliable, it competes with $1,500 6D or even cheaper 70D/D7100 (and loses to the latter for the sports, and there are other cameras like E-M5 which are perfectly good if you don't need sports).

This also depends on the AF motor inside the 90-250mm, 7-14mm, and the 35-100. None focus as fast as the 14-35mm f2 SWD.

http://asia.olympus-imaging.com/products/dslr/lenses/14-35_20swd/

"Olympus's exclusive SWD-driven ultra-fast AF system, a mechanically interlocked manual focusing mechanism"

The 12-50mm SWD and 50-200mm SWD will also benefit fully from camera body AF upgrades.  The 12-60mm and 50-200mm have always been a very sweet setup in terms of performance, size and cost. They will be a good pair of lenses for m4/3 users who are willing to carry such "large" lenses.

The SHG lenses will continue to be rare exotics.

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Jon

Totally agree.  The 90-250 would not be the best lens to test AF speed.  No way could it track at 9fps regardless of body.  It is unfortunate that Olympus stopped making 43 lenses before a long prime with SWD could be developed.  A 300mm F4 SWD would be a big seller with the E-M1.  Primes are also usually better at tracking than Zooms in most cases.

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