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08-06-2014, 06:02 AM   #1
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Need advise with a potential K5iis to K3 upgrade

I'm the proud owner of a K-5iis with only 4000 shots. I've been moving towards long telephoto and love the pictures the k5iis + Sigma 300mm f2.8 produces. I was offered to purchase a six months old K-3 Silver with 700 shots (with grip) for a reasonable price. I'm aware of the k3 higher buffer speeds, sd capacity, higher FPS and greater crop factor especially for wildlife/birding (an additional 1.4X tc with no image degradation as some people claim). On the other end, K5iis has excellent high iso performance and it's been a real champ with no issues. I'm a little concerned with the K-3 mirror issues and unsure about the silver Limited Edition paint ( The Prestige edition seems much cooler) since i'm not an ostentatious person and prefer not to draw attention when i shoot. If anyone with a penchant for long-telephoto shooting has made the jump to K3 and would like to share their experience I'd appreciate it greatly.


Last edited by Mirton; 08-06-2014 at 06:15 AM.
08-06-2014, 06:16 AM   #2
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From what I've gathered from a similar question, the silver paint scheme is as durable as black. Though my K5 has some noticeable paint wear adding to its workhorse demeanor, I think it would be far less noticeable with silver. I think the silver and prestige both look great, though.

I'd like to have a K5iis, with all the insect macro work I do, the bump in resolution might be worthwhile. I don't have the money for that or a K3 right now, though.
08-06-2014, 06:53 AM   #3
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I think you got some bad info on crop factor. The K3 has the same sensor size as the K5IIs, which results in a crop factor of 1.5 for both cameras. The increased resolution (24 mp vs 16 for the K5IIs) leaves more room for additional cropping in post-processing, but out of the camera you'll have the same field of view from either camera for a given lens.

BTW, I'm considering the same upgrade for the increased resolution and improved autofocus but have been waiting to see if the mirror flap issue is resolved.
08-06-2014, 07:08 AM   #4
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I love my silver K-3, but I've ordered the prestige edition too. No mirror problems as yet.

08-06-2014, 07:08 AM   #5
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QuoteOriginally posted by jrpower10 Quote
I think you got some bad info on crop factor
Sensor Size:
K-3 - 15.6 x 23.5
K-5IIs - 15.7 x 23.7
08-06-2014, 07:25 AM   #6
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halfspin, I stand corrected. However the additional crop factor isn't 1.4, it's an additional 1.014 (372 mm2/366mm2). For all practical purposes, that's the same.
08-06-2014, 07:38 AM   #7
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Yeah it's not much difference at all. The big difference for me is the K-5iis is nearly a full stop better in dynamic range.
08-06-2014, 07:42 AM   #8
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The extra resolution of the 24mp will allow you to crop more.
You will notice a bit more grain in low light shots but it cleans up easily.
If you only do wildlife it may not be such a great improvement over your K-5 unless you are doing a lot of bird in flight and tracking running herds of zebras.
Biggest advantage and the reason I got the K-3 is for sports shooting due to the better AF for moving targets, higher FPS, quicker image display response and buffer clearing.
Also the K-3 shutter is a little bit louder than K-5 if that matters.

08-06-2014, 08:34 AM   #9
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i have both the k5iis and the k3...the k3 does have periodic mirror flop issues...never had the problem with k5 or k5 iis...my personal opinion i love the fast shutter on the k3 but really only find it useful when i'm shooting sports...for birds in flight the k5 iis works great and honestly i am on the fence as to whether there is any significant gain with the 24mp versus 16...i shoot a variety of different pictures but my passion is birds, bugs, nature...with these shots i am happy with the k5iis...when i need to shoot races, or shots less than 250mm i really like the k3...i do not have the sigma 300 2.8...i do have the pentax da300 4 and the sigma 500 4.5 and i can be happy with either camera with these lens...i am cuious how a 2.8 or the older f, fa 300 lens would respond on the k3 and have played with the idea of trying one but yet to take the plunge...i have heard these focus faster on the k3 but no experience to comment on it..i imagine others will have a multitude of opinions so in the end you may have to decide whether to take the plunge...good luck
08-06-2014, 08:52 AM   #10
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I took crop factor to mean the ability to crop a small spot out of a larger picture without degradation. Here's a good example from on of my K3 RAW shots. This is a 1280 x 800 pixel crop out of the following RAW shot.


Jpeg of the RAW file.



The 1280 x 800 pixel crop.



Hope this helps some.
08-06-2014, 09:12 AM   #11
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QuoteOriginally posted by jrpower10 Quote
halfspin, I stand corrected. However the additional crop factor isn't 1.4, it's an additional 1.014 (372 mm2/366mm2). For all practical purposes, that's the same.
It wasn't literal improvement of a 1.4x crop factor, I've read some postings on such claims but i don't take them literally. For a wildlife photographer looking for that nth degree of sharpness from your crops I would consider it an advantage to some extent. Thank you for the input.


QuoteOriginally posted by kkoether Quote
I took crop factor to mean the ability to crop a small spot out of a larger picture without degradation. Here's a good example from on of my K3 RAW shots. This is a 1280 x 800 pixel crop out of the following RAW shot.


Jpeg of the RAW file.



The 1280 x 800 pixel crop.



Hope this helps some.
There was no misunderstanding on my part, thank you kkoether and to all of you for the input on this matter.

Last edited by Mirton; 08-06-2014 at 11:01 AM.
08-06-2014, 09:25 AM   #12
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I am a K5IIs user and I don't think there a need to upgrade to K3, if all you need is image quality.
But if you want better LV focus assist, better AF, better video mode, then yes... upgrade.

I want to "upgrade" my other camera, a K5 to K5IIs and I then am satisfied.
08-06-2014, 12:20 PM   #13
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As halfspin says, the K5IIs has better DR, which is something to consider. I do a lot of landscapes and shoot at iso 80 on a tripod, and I'm usually able to get it in 1 shot while I see others taking 2 exposures to blend because they can't quite get there.
08-06-2014, 12:55 PM   #14
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Imagine the k-5iis sensor in a k-3 body...yum.
08-09-2014, 04:00 AM   #15
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QuoteOriginally posted by jrpower10 Quote
As halfspin says, the K5IIs has better DR, which is something to consider. I do a lot of landscapes and shoot at iso 80 on a tripod, and I'm usually able to get it in 1 shot while I see others taking 2 exposures to blend because they can't quite get there.
So you mean you compared your K5-IIs with your buddies using K3, shooting the same scene, and they have to take 2 shoots to get the quality you get in 1 shoot. In the end you compared, and the K5-IIs 1 shoot was as good or better as the 2 shoot exposure blend even through it obviously offer them 1 more stop of dynamic range ?

I suppose you would not like at all a 645D MF with only 12EV of dynamic range... Likely poorly suited for shooting landscapes
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