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10-07-2022, 12:44 AM - 1 Like   #1
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Back to Pentax?

Hi all!
I used to have the Pentax K30 and then the K III (Mark 1) which I was very pleased with, since at that time I was shooting mainly landscapes, but I switched to Nikon D7200 when I started to shoot wildlife, especially birds. Now I'm considering going back to Pentax, but I'm not up to date with the current performance of the cameras. How would a K1 II or a K3 III compare to a D7200 or a D500 (I'm also thinking about an upgrade of the Nikon system) in terms of focus speed and accuracy? I would pair the camera with a Pentax 150-450 lens or a Sigma/Tamron 150-600.
Thanks!

10-07-2022, 01:56 AM - 2 Likes   #2
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QuoteOriginally posted by Doctor X Quote
Hi all!
I used to have the Pentax K30 and then the K III (Mark 1) which I was very pleased with, since at that time I was shooting mainly landscapes, but I switched to Nikon D7200 when I started to shoot wildlife, especially birds. Now I'm considering going back to Pentax, but I'm not up to date with the current performance of the cameras. How would a K1 II or a K3 III compare to a D7200 or a D500 (I'm also thinking about an upgrade of the Nikon system) in terms of focus speed and accuracy? I would pair the camera with a Pentax 150-450 lens or a Sigma/Tamron 150-600.
Thanks!
Hi. I have no experience of the Nikon cameras, but the Pentax K3 III has a vastly improved A/F system. Paired with the most modern Pentax lenses like the 150-450 you will be impressed.

My simple advice would be if you intend to shoot wildlife, then the K3 III is the way to go. If you have a hankering to return to landscape then the K-1 II still packs a very powerful punch.
10-07-2022, 02:21 AM   #3
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QuoteOriginally posted by pschlute Quote
Hi. I have no experience of the Nikon cameras, but the Pentax K3 III has a vastly improved A/F system. Paired with the most modern Pentax lenses like the 150-450 you will be impressed.

My simple advice would be if you intend to shoot wildlife, then the K3 III is the way to go. If you have a hankering to return to landscape then the K-1 II still packs a very powerful punch.
Thanks, pschlute!

I read a review here and someone complains about the buffer size while shooting motorsports. I had no issue with the buffer size on the D7200 and I'm not usually shooting long bursts, but should I be worried about that?

QuoteQuote:
Cons:
Buffer utterly insufficient for Motorsports and Action (allows only 30-40 pics per shooting doing Raw+ and Jpg+). Compared to a Nikon D500 that keeps and keeps and keeps shooting, this is very few. Plus if you get a bunch of cars now, and then you have some more later you'll miss the latest ones due to the slow buffer acting.

Price: Compared to any other camera in this range it is expensive at 2000Ä. Considering both Cons I'd probably pick up a D500 instead (cheaper and better buffer)

Fewer lens options. Specially for newer lenses from brands like Sigma or Tamron. You can not get a Sigma 150-600mm for the Pentax system. And the old big zooms are rare and heavily looked after so prices are expensive (i know myself).

Read more at: Pentax K-3 III - Pentax K-mount DSLRs - Pentax Camera Reviews and Specifications
10-07-2022, 03:35 AM   #4
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QuoteOriginally posted by Doctor X Quote
I would pair the camera with a Pentax 150-450 lens or a Sigma/Tamron 150-600.
Thanks!
I don't know how those AF systems would compare, but you are out of luck trying to buy a Sigma/Tamron 150-600mm lens with a Pentax K mount

10-07-2022, 04:03 AM   #5
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QuoteOriginally posted by Doctor X Quote
I read a review here and someone complains about the buffer size while shooting motorsports. I had no issue with the buffer size on the D7200 and I'm not usually shooting long bursts, but should I be worried about that?
Well another reviewer from the same thread has no issues ...". 11.6 fps for 30 image bursts with raw dng are easily possible.
- 12fps is 20% faster than D500, 26MP are 25% more pixels than D500. Buffer is good for 2.5s at full speed"

RAW+JPEG, which your quoted reviewer was using is going to slow things down, especially if things like lens corrections/noise reduction are turned on.
10-07-2022, 04:33 AM - 1 Like   #6
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QuoteOriginally posted by pschlute Quote
RAW+JPEG, which your quoted reviewer was using is going to slow things down
Indeed.

Interestingly, here is what Imaging Resource found when they tested the D500 in 2016 for RAW+JPEG shooting:

Nikon D500 Review - Performance: Nikon D500 Review - Performance

Performance test of Continuous High burst mode: 14-bit RAW (lossless, compressed) + JPEG (Large, Fine), using a Lexar Pro 2933x 64 GB XQD 2.0 card rated at 400 MB/s write.

The D500 achieved "10.2 frames/sec for 27 frames total then slowed to an average of 3.83 fps with a full buffer. Time to clear 27-shot buffer: 4 seconds." [They didn't indicate which AF mode was used, nor which in-camera JPEG processing was enabled.]

So, the Pentax K-3 Mark III seems to have a slightly higher buffering performance when shooting RAW+JPEG. However, from what we know from anecdotal reports and rated card speeds, the Pentax takes longer than the D500 to clear a full buffer and write to the SD card. For either camera, different performance will be achieved for RAW-only or JPEG-only shooting.

- Craig
10-07-2022, 05:59 AM   #7
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I canít locate it right now but thereís a recent thread comparing the use of the d500 and k3iii by someone who owns both.

10-07-2022, 06:31 AM   #8
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QuoteOriginally posted by c.a.m Quote
Indeed.

Interestingly, here is what Imaging Resource found when they tested the D500 in 2016 for RAW+JPEG shooting:

Nikon D500 Review - Performance: Nikon D500 Review - Performance

Performance test of Continuous High burst mode: 14-bit RAW (lossless, compressed) + JPEG (Large, Fine), using a Lexar Pro 2933x 64 GB XQD 2.0 card rated at 400 MB/s write.

The D500 achieved "10.2 frames/sec for 27 frames total then slowed to an average of 3.83 fps with a full buffer. Time to clear 27-shot buffer: 4 seconds." [They didn't indicate which AF mode was used, nor which in-camera JPEG processing was enabled.]

So, the Pentax K-3 Mark III seems to have a slightly higher buffering performance when shooting RAW+JPEG. However, from what we know from anecdotal reports and rated card speeds, the Pentax takes longer than the D500 to clear a full buffer and write to the SD card. For either camera, different performance will be achieved for RAW-only or JPEG-only shooting.

- Craig
I only shoot RAW with both cameras, but give me a couple of days and I can check the time to clear buffers using RAW+ too. In the several weeks I've been using the D500 (QXD card) and K3III on both combined and separate shoots I've not yet completely filled the buffer on either one. I'll have to purposely do so as I don't think it's something that would typically happen outside of unusual circumstances on the K3III or D500.
10-07-2022, 06:42 AM   #9
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QuoteOriginally posted by UncleVanya Quote
I canít locate it right now but thereís a recent thread comparing the use of the d500 and k3iii by someone who owns both.
K3III owner, and now I've bought a D500 too. So.... - PentaxForums.com

^ This.
10-07-2022, 07:54 AM   #10
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QuoteOriginally posted by The Squirrel Mafia Quote
Yup, I've had some distractions to say the least, but I'll be getting back to that thread soon.
10-07-2022, 10:03 AM   #11
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QuoteOriginally posted by Doctor X Quote
Hi all!
I used to have the Pentax K30 and then the K III (Mark 1) which I was very pleased with, since at that time I was shooting mainly landscapes, but I switched to Nikon D7200 when I started to shoot wildlife, especially birds. Now I'm considering going back to Pentax, but I'm not up to date with the current performance of the cameras. How would a K1 II or a K3 III compare to a D7200 or a D500 (I'm also thinking about an upgrade of the Nikon system) in terms of focus speed and accuracy? I would pair the camera with a Pentax 150-450 lens or a Sigma/Tamron 150-600.
Thanks!
Please take into account that to have any use of new K-3 Mk III AF you need either 150-450 or 55-300 PLM. Those two and 16-50 PLM are only lenses in Pentax land that can take full advantage of K-3 Mk III autofocus. So if you are ok (and it seems you are) go for it. It is very good camera and there is little reason to get K-1 Mk II for wildlife.
10-07-2022, 03:35 PM   #12
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QuoteOriginally posted by Doctor X Quote
How would a K1 II or a K3 III compare to a D7200 or a D500
I have shot with Nikon cameras but do not own them. My friend is into Nikon and we did a few shootouts between the systems. He had the D7100 at the time and I had the K3 mark 1. They were neck and neck in quality and overall performance. The menu system, IMHO goes to Pentax hands down. The Nikon had a slight edge on focusing speed and accuracy. I also had the K1 Mark 1 which is a landscape beast. The only FF camera my friend had at the time was the D750 which is a 24MP camera so it is not fair to compare it to K1. K1 had the resolution advantage and again the friendly menu. One area where the 750 outperformed the K1 and the K3, was focusing. The camera would not miss focus even if you tried. I am to this day awed by the focusing of the D750. Another friend who is a Pentaxian owns the K3 III and he loves it. I cannot comment any further as I do not own the 150-450 or other super long lenses. I am mostly Sony now with a few Pentax lenses and a K5IIs left in my system line up. If you wanted Sony to Pentax comparison, I can chime in on that.
10-07-2022, 03:40 PM   #13
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For wildlife the K-3 III and the Pentax 150-450 would most likely be a pairing for excellent performance and results. As far as I know, the Sigma 150-600 is not manufactured for specific Pentax use. I have the Sigma 150-500 DG OS for Pentax that was available to buy before the Pentax 150-450 so I bought it and still have it. It provides excellent images, but the Pentax 150-450 was made later and it most likely is higher performance due to having more recent/advanced technology than the Sigma 150-500 for Pentax.
10-07-2022, 10:51 PM   #14
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The Nikon D750 is mind-blowing autofocus-wise. It all depends on how someone will use the camera. I know Nikon is a go-to for sports shooting. An upgrade of the same brand would probably be better. Although I havenít had experience with Pentax models except for the K-70. Looking at the specs, only, the K3m3 should be enough with a good lens.
10-08-2022, 04:34 AM - 1 Like   #15
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If you prefer a optical viewfinder and want to stay in the world of reflex cameras, the K-3iii with modern lenses (150-450, 55-300, ...) is comparable to the D500 in AF performance.
However, in the Nikon system there is way more choice of lenses (also from third party, and especially for long telephoto/zoom), and a larger used market.
Also, many users would swear by the capability of modern mirrorless bodies (e.g. Canon, even the new APS-C R7, but many other bodies) for shooting wildlife, so this is also an option to consider.
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