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Forum: Pentax Mirrorless Cameras 03-07-2019, 08:40 AM  
An Enthusiast Mirrorless
Posted By labidas
Replies: 66
Views: 7,023
you don't need a new mount.
Forum: Pentax Mirrorless Cameras 02-08-2019, 09:39 AM  
An Enthusiast Mirrorless
Posted By labidas
Replies: 66
Views: 7,023
AF performance is tied to the lenses you use. Use fast glass and it won't be sluggish.
A7III has the same AF system as the A9 chip. It runs slower. In practice it behaves very similarly to the A9.
If you never had problems with AF microadjustments, you are lucky.

Where did you hear that about the A6400? I've only read the playback in the EVF looks laggy while shooting, yet the images are all in focus.
But what do I know, I'm just a Sony rep. like most reviewers :D
Forum: Pentax Mirrorless Cameras 02-08-2019, 05:22 AM  
An Enthusiast Mirrorless
Posted By labidas
Replies: 66
Views: 7,023
I respectfully disagree. I'll take 90% over 30% every day of the week. The difference between 100% and 90% is nothing.
A7-III has almost identical focusing performance to an A9.

In practice, try shooting at f1.4 and nail outdoor portraits.
Everyone isn't photographing in a studio. And I'm willing to bet whoever you brought up as an example isn't using wide open apertures either.

In the end of the day, AF is a tool that lets you concentrate on your job better. Fast and accurate AF is always better to have than not to have. I've shot many shoots with manual focus too, it doesn't stop me from getting the results, but it always comes at a cost = more time and missed moments.
Forum: Pentax Mirrorless Cameras 02-08-2019, 04:44 AM  
An Enthusiast Mirrorless
Posted By labidas
Replies: 66
Views: 7,023
Depends on your shooting style. For landscapes and such there is no benefit.
For fast situations there is a benefit. Sports, action etc. You wan't the camera to correct the focus as fast as possible and do so continuously.
Same for portraits. It's far easier with the Sony to let the camera lock onto the eye and continuously focus, letting you commit yourself fully to the composition and working with the model. This requires fast and accurate AFC.

Ofc it's marketing. They are trying to make money. But it's not the manufacturers fault people buy off of emotion. In my opinion AF reaction speed hasn't been an issue for a long time. The main bottleneck is always the lens and how quickly/frequently AF.C responds. I use older lenses. SDM and Sigma HSM are both very slow compared to the newest PLM lenses.
I did a quick test a few days back, trying to focus on passing cars on a street coming towards me. My K3 with the 50-135 managed to get about 33% in focus.

*For me, based on the experiences I've had with my Pentax cameras, the next camera I intend buy will be a mirrorless.
*All my f2,8 zooms have needed different AFmicroadjustment values at different focal lengths. You can't fix that without sending in the lens with camera and hoping for the best. No worries on a MILC.
Forum: Pentax Mirrorless Cameras 02-08-2019, 02:58 AM  
An Enthusiast Mirrorless
Posted By labidas
Replies: 66
Views: 7,023
I've tested the A7-III during a press event. It's faster than any Pentax that's for sure.
Forum: Pentax Mirrorless Cameras 02-07-2019, 03:18 PM  
An Enthusiast Mirrorless
Posted By labidas
Replies: 66
Views: 7,023
Nope. A7III is miles ahead.

And the benefits are pretty obvious.
1)You have less surfaces/obstructions that interfere with the focus.
2)Focusing is done on the sensor which means AF microadjustments are unnecessary.
3)You can spread out your focus points all across the sensor.
4)You can use a combination of contrast + phase detect AF.
5)You can use the actual live feed from the sensor and combine it with AI. = eyeAF!!!

D750 is a dinosaur.

I would definitely want a MILC Pentax. Just keep the good old body design of the K3/K1.
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