AF-C of K-3III is impressive

**kwb** · 04-04-2021, 10:25 AM - **9 Likes**

In another thread (This is the Pentax K-3 Mark III - Page 24 - PentaxForums.com) @JPT pointed us to the blog of Yaotomi staff reporting his/her impressions on K-3III, it had a link to K-3III AF-C test but it probably wasn't that conspicuous to those who don't read Japanese. I made a comment in that thread but it was so impressive I thought it deserved its own thread.

Anyway, the direct link is this.
?????? PENTAX K-3III @ review vol.1??? ? ???????AF-C - ????
The train is approaching towards the camera at 100+ km/h (i.e. 62+ mph), he shot a sequence of 18 frames using 55-300 PLM with ~7fps Continuous Shooting (M) mode and Expanded Area AF (S) focus area. Looking at 1:1 crops, there's only one frame that is out of focus.

repaap · 04-04-2021, 11:01 AM - **2 Likes**

Yes, I think pentaxians will be in treat with this new thing. It is going to be fun, not that it has not been so far, but more so.

The Squirrel Mafia · 04-04-2021, 12:03 PM - **1 Like**

Yes. I'm looking forward to the upcoming reviews. The AF does look impressive. It will probably overwhelm the non-AF users. Hahaha!

**FozzFoster** · 04-04-2021, 01:52 PM

It seems that ALL first impressions are without the latest firmware.
All the reviewers mention that they have preproduction units without the finalized firmware.
All the reviewers say they AF is impressive as it is - with improved firmware even more so!

Kunzite · 04-04-2021, 01:56 PM - **1 Like**

I see 3 OOF frames; still looks like a solid performance.

gatorguy · 04-04-2021, 02:08 PM - **2 Likes**

Originally posted by Kunzite

I see 3 OOF frames; still looks like a solid performance.

With beta firmware I'd consider it better than solid.

**Serkevan** · 04-04-2021, 04:55 PM - **2 Likes**

Originally posted by Kunzite

I see 3 OOF frames; still looks like a solid performance.

It's terribad. The train wasn't weaving sideways, and certainly not doing somersaults... clearly they went easy on the K-3iii for this test!

Jokes aside, it looks very good. I kinda doubt my K-1 would have managed that.

**Larrymc** · 04-05-2021, 12:28 PM

Originally posted by Kunzite

I see 3 OOF frames; still looks like a solid performance.

I saw those too but those other two look like a bit of motion blur rather than soft focus.

repaap · 04-05-2021, 12:45 PM

It is going to be good times!

reh321 · 04-05-2021, 12:57 PM

Originally posted by Larrymc

I saw those too but those other two look like a bit of motion blur rather than soft focus.

I wonder how fast the train was traveling.
I know with US trains, 1/500 is sufficient to "stop" them.

Tesla · 04-05-2021, 01:09 PM

Originally posted by reh321

I wonder how fast the train was traveling.
I know with US trains, 1/500 is sufficient to "stop" them.

Speed in OP. Around 60 MPH

thibs · 04-05-2021, 02:04 PM

Wow. Impressed. Just wow.

Should apppear in a K1 III just at the good time so it should have a decent price in second hand when my doughter will be ... 'up to speed"

Kunzite · 04-05-2021, 02:18 PM

Originally posted by thibs

Should apppear in a K1 III just at the good time so it should have a decent price in second hand when my doughter will be ... 'up to speed"

Will she move at 100km/h?
Or she will rather swerve around at bicycle speeds? Then, the DPR review might be more relevant...

thibs · 04-05-2021, 02:48 PM

Haha, I don't trust my K5 AF.
K1, not sure yet.

davidsladek · 04-05-2021, 11:53 PM

You Tube

with D-FA* 70-200/2.8
is it me or is the author moving the camera way too erratically?

04-04-2021, 10:25 AM - 9 Likes	#1
kwb Site Supporter Join Date: Mar 2015 Location: Pacific North West Photos: Gallery \| Albums Posts: 1,223	AF-C of K-3III is impressive In another thread (This is the Pentax K-3 Mark III - Page 24 - PentaxForums.com) @JPT pointed us to the blog of Yaotomi staff reporting his/her impressions on K-3III, it had a link to K-3III AF-C test but it probably wasn't that conspicuous to those who don't read Japanese. I made a comment in that thread but it was so impressive I thought it deserved its own thread. Anyway, the direct link is this. ?????? PENTAX K-3III @ review vol.1??? ? ???????AF-C - ???? The train is approaching towards the camera at 100+ km/h (i.e. 62+ mph), he shot a sequence of 18 frames using 55-300 PLM with ~7fps Continuous Shooting (M) mode and Expanded Area AF (S) focus area. Looking at 1:1 crops, there's only one frame that is out of focus.

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04-04-2021, 11:01 AM - 2 Likes	#2
repaap Pentaxian Join Date: Oct 2010 Photos: Gallery \| Albums Posts: 6,242	Yes, I think pentaxians will be in treat with this new thing. It is going to be fun, not that it has not been so far, but more so.

04-04-2021, 12:03 PM - 1 Like	#3
The Squirrel Mafia Pentaxian Join Date: Jan 2015 Posts: 3,054	Yes. I'm looking forward to the upcoming reviews. The AF does look impressive. It will probably overwhelm the non-AF users. Hahaha!

04-04-2021, 01:52 PM	#4
FozzFoster Custom User Title Join Date: Jan 2016 Location: Alberta Photos: Albums Posts: 6,806	It seems that ALL first impressions are without the latest firmware. All the reviewers mention that they have preproduction units without the finalized firmware. All the reviewers say they AF is impressive as it is - with improved firmware even more so!

04-04-2021, 01:56 PM - 1 Like	#5
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	I see 3 OOF frames; still looks like a solid performance.

04-04-2021, 02:08 PM - 2 Likes	#6
gatorguy Moderator Join Date: Feb 2015 Location: Central Florida Photos: Gallery Posts: 6,092	Originally posted by Kunzite I see 3 OOF frames; still looks like a solid performance. With beta firmware I'd consider it better than solid.

04-04-2021, 04:55 PM - 2 Likes	#7
Serkevan Site Supporter Join Date: May 2019 Photos: Albums Posts: 5,976	Originally posted by Kunzite I see 3 OOF frames; still looks like a solid performance. It's terribad. The train wasn't weaving sideways, and certainly not doing somersaults... clearly they went easy on the K-3iii for this test! Jokes aside, it looks very good. I kinda doubt my K-1 would have managed that.

04-05-2021, 12:28 PM	#8
Larrymc Site Supporter Join Date: Jun 2014 Location: Mississippi, USA Posts: 5,251	Originally posted by Kunzite I see 3 OOF frames; still looks like a solid performance. I saw those too but those other two look like a bit of motion blur rather than soft focus.

04-05-2021, 12:45 PM	#9
repaap Pentaxian Join Date: Oct 2010 Photos: Gallery \| Albums Posts: 6,242	It is going to be good times!

04-05-2021, 12:57 PM	#10
reh321 Pentaxian Join Date: Nov 2014 Location: South Bend, IN, USA Photos: Gallery \| Albums Posts: 23,180	Originally posted by Larrymc I saw those too but those other two look like a bit of motion blur rather than soft focus. I wonder how fast the train was traveling. I know with US trains, 1/500 is sufficient to "stop" them.

04-05-2021, 01:09 PM	#11
Tesla Pentaxian Join Date: Mar 2013 Location: Washington State Posts: 589	Originally posted by reh321 I wonder how fast the train was traveling. I know with US trains, 1/500 is sufficient to "stop" them. Speed in OP. Around 60 MPH

04-05-2021, 02:04 PM	#12
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	Wow. Impressed. Just wow. Should apppear in a K1 III just at the good time so it should have a decent price in second hand when my doughter will be ... 'up to speed"

04-05-2021, 02:18 PM	#13
Kunzite Pentaxian Join Date: Apr 2007 Location: Romania Posts: 15,132	Originally posted by thibs Should apppear in a K1 III just at the good time so it should have a decent price in second hand when my doughter will be ... 'up to speed" Will she move at 100km/h? Or she will rather swerve around at bicycle speeds? Then, the DPR review might be more relevant...

04-05-2021, 02:48 PM	#14
thibs Pentaxian Join Date: Jun 2007 Location: Belgium Photos: Albums Posts: 7,001	Haha, I don't trust my K5 AF. K1, not sure yet.