klavrack

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On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

08amczb: I'am reading dpreview for a while now, messured in years, but it's my first post.
Rishi, your post (after approx 2200 posts in this thread) now made the test clear for me:
"You're missing the point. There's no predictive algorithm in the X-Y direction in single point. Only in the Z-axis. At which point it doesn't matter what object falls under the AF point as long as it's still in relatively a similar plane to what you want focused."
So the K-1 has a usable predictive focus in AF-C mode if you can keep one focus point on the target, but it doesen't recognize if the object moves to somewhere else in the frame and it defults to infinity, which is obviously the fault of the camera.
According to the review the AF-S mode is capable, but slow especially in low light, and AF-C is also working, but you should do the (easier) half of the work insted of the camera. This explains why is it behind the competition.

The AF-S lag is addressed by changing the camera setting to release-priority. They mention this in their discussion, but not in their conclusion. Whether the setting change makes AF-S lock at -3EV as fast as the D750 I don't know. The D610 only goes to -1EV, so no comparison there.

Link | Posted on Jul 12, 2016 at 15:32 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)

To DPR staff--your review mentions AF-S hesitation under some conditions, but that changing settings to release-priority helps address it. Would you please clarify these points? This could be very important to folks considering the camera who aren't otherwise worried about how AF-C tracking compares to the D810 or D500. My K-1 AF-S seems nearly immediate and accurate in low light when set to release priority, but I'd value your more objective opinion.

Link | Posted on Jul 10, 2016 at 23:55 UTC as 122nd comment
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

thezapp: Nice review guys. Most of us will read additional review and can add their own two cents. Instead of bashing Pentax for not knowing where the focus point is, one could just state that LCD overlay from Canon and Nikon apperas more useful. This was stated in previous Pentax reviews and is one of the things I expected from the K1. AF speed and comparison may be not the most objective testing procedure, but honestly Pentax K5 AF was sub-par, K3 is usable and K1 will be OK for regular work. Pentax is working on many fronts here and excelled in some unique areas like sensor shake reduction, pixel shift, image resolution, weather sealing and availability of a not at all redundant FF camera. This should be compared in future reviews of pear systems. D8x0 comparison will be obsolete in the near future...
What really shakes me about the K1 is that Pentax shifted away from small footprint camera and lenses to FF camera system with large lenses. More compact high quality FF lenses is needed.

Rishi--The review notes that a setting change to release-priority helps avoid the focus-lock delay. Would that help avoid this issue as well?

Link | Posted on Jul 10, 2016 at 23:42 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

Dave C 150: There isn't a camera out there that will meet everyone's requirements. Look at each camera's strengths and your budget and see if it is what you want. They will all do the rest at least adequately. So in this case if you want a camera that is say robust, a low price for the specs and excellent for landscapes to mention one as an example then this may be for you. If you specialise in wildlife, especially birds, you will probably have to pay more but will likely look at other makes. Conversely if you are into astro photography, especially on a budget, you would leap at a K1 in front of the others. Horses for courses, so don't shoot the messenger!

dansclic--You are greatly exaggerating what the reviewers actually said about the cons. They said that AF-C tracking was below average. They said that AF-S hesitates in low light, but that a setting change to release-priority addresses that. If I shot a lot of action-tracking shots, I'd get a D500. For all-around use, the K-1 is a great package at a great price. Their review agrees.

Link | Posted on Jul 9, 2016 at 15:00 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

GoremanX: I alluded to this in a previous comment, but I'll state it more plainly. The reviewer's assessment of the AF capabilities is downright wrong. I'm not arguing with the final score or anything, but the entire AF section of the review reeks of bad reviewing.

Claiming the AF is unimproved over previous Pentax models is ludicrous. Even the basic AF interface has been overhauled. And AF accuracy isn't just improved, it's fantastic. Implying that anyone picking up the camera would be lucky to get an in-focus shot is disingenuous and ridiculous. 50% keeper rate? Really?!?

Having said that, I'm the first to admit that AF-C tracking of subjects with Pentax cameras is still far behind what's being offered by Nikon and Canon. A fast action camera, this is not. I've been able to get good results at sports photos with the K-1, but only with very careful management of the AF. A sports photographer would be very frustrated by these limitations.

Rishi--your review mentions what others have noted, that changing to release-priority helps eliminate that AF-S hesitation. If it's that easily addressed, why not cite it as a recommended settings adjustment rather than an inherent AF weakness? For many prospective buyers, your conclusion sounds like a blanket condemnation of its AF usability in any mode, which doesn't really seem to be your intention.

Link | Posted on Jul 8, 2016 at 23:47 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

Polacofede: Hi,
I know that this might add lot of work for reviewers, but i wonder if there could be other kinds of AF-C done when reviewing a camera. I mean, for instance when you shoot BIF or wild animals they usually move ( fly / walk / run ) in a more perpendicular or diagonal way to the camera lens and not towards the camera, and they are not at 1-2 meter away. So maybe you can arrange something to test this kind of focus tracking in a predictive way, you could also add obstacles like branches so the object goes beyond them and then re-appear and see how camera-lens responds. So IMHO the review could distinguish among those instead of AFC review conclusion been almost a binary conclusion. You could end up having a AFC testing ground :) .

Richard and Rishi--thanks for the review and for monitoring the discussion. What I think would be a useful inclusion for comparison shopping in a review like this would be to control variables by running the same AF tests with a couple of similarly-priced models with same (ie-3rd party) lenses, focal length, f-stop, lighting, etc. Besides stifling charges of favoritism, it would be helpful for shoppers to see how, say, the K-1 did compared to the D610. If it's terrible, that's good to know. But otherwise, it's hard to compare an f/4 D610 test with one lens to an f/2.8 test with another lens under different lighting conditions, etc., and there's no way to compare the K-1 low-light AF or the weaving-bike test to the D610 review, which didn't include them. And you do have to admit that the Kindle wisecrack was a little provocative, especially when you said (as I found) that switching to release-priority greatly improves AF-S performance.

Link | Posted on Jul 8, 2016 at 23:35 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

DuncanM1: From another review site:

"Autofocus performance was swift, comparing well with the Pentax K-3 II in my informal, real-world testing. (And our lab testing likewise found autofocus performance to be a strength of the Pentax K-1.)"
http://www.imaging-resource.com/PRODS/pentax-k1/pentax-k1-field-test.htm

In the Dpreview's list of weaknesses, they list AF-S lag, which can be easily eliminated by a settings change to release-priority, and AF-C, which they imply is disastrously poor. The difference between disastrously poor and "middling compared to similarly-priced competitors" for prospective buyers is huge. BTW, they also mention that release-priority improves AF-C performance, but not by how much. As a K-1 owner, I'm fine accepting mediocre AF-C in return for its unique advantages, but again, saying it's mediocre and suggesting you can't use it effectively for backyard kids' shots is a major difference.

Link | Posted on Jul 8, 2016 at 23:18 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)

Thank you for the prompt review, which as a K-1 owner I found to be well-done and fair, with the possible exception of the snarky Kindle reference. What I think could be emphasized better is that the lag in AF-S in low light can be largely eliminated by a simple setting change to Release-Priority, in less time than it takes, say, to boot up a Kindle.

The other suggestion would be to better help comparison shoppers by testing AF-C with the same 3rd-party lens at the same settings with the same subject under equal lighting conditions. It would have been easy to get a D610 and 6D to do this (neither was tested at f/2.8, for example). Had the Pentax lagged behind, hand-wringing would have still happened, but there'd be fewer accusations and more useful info, even if it was to the detriment of the K-1.

Link | Posted on Jul 8, 2016 at 19:52 UTC as 157th comment | 1 reply

As a new Pentax K-1 owner, I'm happy to hear this. Manual focus is pretty manageable via either catch-in-focus or focus peaking.

Link | Posted on Jun 14, 2016 at 00:49 UTC as 21st comment
In reply to:

FantasticMrFox: Seems like Pentax K is garnering third party support again. First Irix, now this - the sun is shining in Pentax land. And with the success of the K-1 and the new electronic aperture mechanism, it seems like it's only a matter of time until at least Sigma returns.

nicolai--Good thing the Pentax K-1 has both focus peaking and Catch-in-focus modes, huh?

Link | Posted on Jun 14, 2016 at 00:46 UTC
On article Pentax K-1 Pixel Shift Resolution: Updated Field Test (210 comments in total)
In reply to:

m43ismoretroublethanitsworth: As far as the bundled SilkyPix software; I used it over the course of 4 years on 4 computers and it is slow, in addition to being cumbersome. The fact that Lightroom doesn't handle Pixel shift properly, is more evidence that the technology just is not beneficial.

As the review suggests, you can use the bundled software to quickly convert the RAW image to tif format, then use whatever software you like to adjust everything else. That's what I'm doing. Concluding that it's "not beneficial" is just stubbornness or deliberately being provocative.

Link | Posted on Jun 13, 2016 at 19:16 UTC
On article Back to the action: Nikon D500 Review (1083 comments in total)
In reply to:

jmfoots: Focus peaking, yo.

Indik--You're presuming that a birder has no interest in using this camera for anything else that might benefit from FP, like macro shots.

Link | Posted on May 26, 2016 at 16:35 UTC
In reply to:

gravelhopper: I am a Pentax user myself. I understand users here expressing their high spirits about the K1 and Pentax / Ricoh overall development. But why pitting Pentax against other brands and provocing their followers? We should be better than that. Especially since we see many users of other brands expressing good wishes towards us Pentaxians.

Cheers

Agreed, but after having been viewed as 2nd-tier for quite awhile (not without basis), it's hard not to crow at least a little. And yes, we Pentaxians know that other brands still have their advantages.

Link | Posted on May 10, 2016 at 15:19 UTC
On article Worth the wait? A look inside the Pentax K-1 (651 comments in total)
In reply to:

KameraFever: Though it doesn't have quite the AF as Nikon and Canon, this seems to be a landscape photographers dream. Tiltable LCD for difficult angles, IBIS, pixel shift capture for static subjects, and weather sealing at this price point are insane.

Jimmy--Since you're able to judge the AF sub-par, I'm assuming you have a K-1 in hand for thorough testing. Can you educate us about its other aspects?

Link | Posted on Feb 19, 2016 at 17:31 UTC
On article Worth the wait? A look inside the Pentax K-1 (651 comments in total)
In reply to:

NAwlins Contrarian: The autofocus points only cover a small fraction of the frame. That plus Pentax's historically class-trailing autofocus performance appear to significant downsides to what is otherwise a good value for the money with some interesting features.

Maybe, maybe not. I'll want to see how it fares in testing.

Link | Posted on Feb 19, 2016 at 17:20 UTC
On article Worth the wait? A look inside the Pentax K-1 (651 comments in total)
In reply to:

RedFox88: $1800 and no 4k? SMH lol!

In my experience, any post that requires the poster to LOL himself probably wasn't very humorous.

Link | Posted on Feb 19, 2016 at 16:57 UTC
On article Worth the wait? A look inside the Pentax K-1 (651 comments in total)
In reply to:

TN Args: I like the value proposition -- although Pentax lenses have always been overpriced IMHO.

I wonder why they didn't offer a pixel shift high res mode? Could have delivered 100 MP on tripod.

John's impression may be accurate but out-of-date. Retail prices of Pentax lenses are currently way down, at least in the U.S.

Link | Posted on Feb 19, 2016 at 16:55 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

Malcolm Kantzler: Does anyone know if the Pentax 645 SMC lenses (manual, AF, and Leaf Shutter) will work with this camera with at least Aperture-Priority metering, and if so with adapter, what the adapter is? Those 645 system lenses are beautiful performers and I'd love to be able to use them on a full-frame digital body w/o the expense of a medium-format digital body. Thanks.

Yes. There are a number of adapters available online.

Link | Posted on Feb 19, 2016 at 14:01 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)
In reply to:

Terry Breedlove: I would buy in a heart beat. My only problem is I have several old Pentax manual focus lenses I would love to shoot with but I can not Manual focus the modern DSLR cameras if my life depended on it. I hate to say it but I am thinking about a Sony A7II just for that reason. I don't want to spend money on a bunch of new lenses but this Pentax really temps me.

Focus peaking really helps with this.

Link | Posted on Feb 17, 2016 at 23:58 UTC
On article Special K? Pentax K-1 Review (2612 comments in total)

The focus peaking is one of our favorite features on our Pentax--very useful for MF lenses, indispensable for macro shots, nice for fine-tuning other shots as well. Not sure I need FF for my shooting, but glad to see this feature included.

Link | Posted on Feb 17, 2016 at 23:36 UTC as 623rd comment | 1 reply
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