Started Apr 28, 2014 | Discussions thread
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Re: Stunning...
In reply to PerL, Apr 28, 2014

PerL wrote:

Ontario Gone wrote:

PerL wrote:

Use that when you can use it and when it is not possible to use, use than the faster auto-focus times on the GH4.

But I don't think GH4 has a faster AF/better hit rate in a real sports shooting scenario.

But how do you know that? What are you basing your opinion on? There is nothing in a physics sense that says a DSLR has to be faster than mirrorless, so if your only argument is "well it hasn't happened yet" , that's pretty thin. The reason a DSLR has been ahead is because the reflex mirror and PDAF have been developing for decades. The problem with that system is it is very hardware dependent, every shot the AF module loses sight of the target, thanks to the flipping mirror.

I am spectical because I have heard for years the "worlds fastest AF" claim, not the least from Panasonic. I remain so until I have seen something that convinces me. I want to see thight shots with shallow DOF of real sports/action scenarios, not small kids running, midtown traffic, turists on bikes, not kit lenses or slow teles shot in bright light with excessive DOF, etc. Show some striking shots that could be published in Sports Illustrated.

The "flipping mirror" argument was one of the things that sounded interesting when Sony introduced the SLT series with the fixed mirror, but I when I tested a few of them it made little difference in practical use. The AF-C was good, but not quite as good as the Canon 1DMK4 I compared it to. I think AF-C adapted to the real sports shooting scenarios is more complicated than people knows. Canon/Nikon has decades of know-how, developed in fierce competition and in dialog with the professionals. That is why Olympus or Pentax or Sony DSLRs never is quite as good in AF-C, at least in my experience.

Software based, on sensor AF does not have this limitation and is only really limited by processing power, and partially by lens motor speed. In an age where smart phones have octa-core CPUs, i think your argument is just about to die off. MFT for example have lenses with much less mass and are physically able to AF faster, now we are bringing faster processing to the mix. Get ready for a change in paradigm.

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"Run to the light, Carol Anne. Run as fast as you can!"

Again start learning not thinking and convince yourself.

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Panasonic Lumix DMC-GH4 Panasonic 12-35mm F2.8 Panasonic Lumix G X Vario 35-100mm F2.8 OIS +3 more
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