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05-14-2014, 04:26 PM   #1
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K-01 point & shoot?

I'm thinking of pairing a K-01 with a Sigma 24/2.8 AF lens, perhaps adding an optical viewfinder.
Will the latest firmware provide reliable autofocus using this combination as a point & shoot?

Chris

05-14-2014, 04:35 PM   #2
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I'd recommend a Ricoh GR for this purpose. You'll get the same (or better) image quality and it slips right into your pocket

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05-14-2014, 04:50 PM   #3
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I have admired the Ricoh GR series since the original 35mm film models.
But I never bought one because I'm not a fan of the 28mm focal length.

I already own the K-01 body, and I prefer the 35mm equivalent FOV.
I meant point & shoot in operation; pocketability is not a requirement.

Chris
05-14-2014, 04:53 PM   #4
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The K-01 is a great camera very close to a P&S with SLR quality. But not all the zoom lenses work well and this has been discussed in several threads at PF.

As a personal experience, my Da18-135mm works great on the K-01. But my Da18-250mm does not work well. Generally the K-01 works very well with small prime lenses.

My wife is currently the K-01 + Da18-135mm as a P&S to complement her iPhone and this works very very well for her.

If you are after an OV, then consider the Ricoh GR as suggested by Adam. If you are happy with Liveview, the K-01 works great IMHO.

Hope that the comments may help.

05-14-2014, 05:05 PM - 1 Like   #5
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Not sure how small the Sigma 24 is, but I found the 21/3.2 to be a great match for the K-01. Very point and shoot-esque.
05-14-2014, 05:09 PM - 1 Like   #6
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The lens that makes the K-01 seem most like a point and shot in operation is the DA21. The AF system is well optimized for that lens and the design of the lens hood even makes it look like a compact. Of course, that lens has many fine qualities of itself, notably contrast and flare resistance. Is it still too wide?

Unfortunately, I've never seen the Sigma, so I can't comment on the AF.
05-14-2014, 05:29 PM   #7
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On 35mm film 75%+ of my photos are made using a 35mm lens. On APS-C the closest common equivalent is 24mm.
FWIW I'm not real fond of zoom lenses.

Reviews I've read here and elsewhere indicate the Sigma 24/2.8 AF lens is well regarded:
https://www.pentaxforums.com/userreviews/sigma-24mm-f2-8-af-super-wide-ii.html

The Olympus viewfinder VF-1 has a FOV that matches 24mm on APS-C.

Chris

Last edited by ChrisPlatt; 05-14-2014 at 05:47 PM.
05-14-2014, 06:00 PM   #8
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Chris: The PF lens reviews (Third Party > Sigm,a > Legacy Primes) have an entry by a member who uses it with a K30. If he uses LiveView that might give you an indication of AF characteristics with CDAF. Also, blackcloudbrew made a review May 1st, 2013 and I know he is still active, as of yesterday. Maybe a PM is in order?

FWIW, the recent K-01 FW update improved the AF for virtually all of my lenses - even the s-lowly F35~70 so long as there is a good contrast line where I am aiming. Low light 'flat' surfaces remain problematic.

05-14-2014, 06:06 PM   #9
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I'd consider a manual focus lens. I really enjoy using my K-01 at f/8 set to hyperfocal length. So at your chosen focal length of 24mm, everything from 6 feet to infinity is in focus. It's very much "point and shoot."
05-15-2014, 08:16 AM   #10
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I'm very happy shooting the K-01 with the Sigma Superwide II 24mm, but my version is manual focus. I've been on the lookout for a reasonably priced AF version, but they're hard to come by! I would think the combo would be excellent.
05-15-2014, 10:32 AM   #11
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QuoteOriginally posted by konraDarnok Quote
I'd consider a manual focus lens. I really enjoy using my K-01 at f/8 set to hyperfocal length. So at your chosen focal length of 24mm, everything from 6 feet to infinity is in focus. It's very much "point and shoot."
  1. SMC Pentax-M 35/2 from your equipment list, for now
  2. SMC Pentax 1:2.8 24mm
05-15-2014, 10:38 PM   #12
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I use a 24mm f2.8 Sigma manual focus lens for a lot of behind-scenes shots, that view angle works really well on the K-01 for candids, but I'd recommend a 35 or 50 if you want to back off from your subject a bit, for their personal space comfort.
05-16-2014, 09:13 AM - 1 Like   #13
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I love my Sigma 24mm Super-wide II autofocus lens. Such sharp images and nice close-focus capability. Works great on my K-50 and also K-01. I am not running the very latest firmware on my K-01 although I did update it once. Autofocus speed and accuracy seem reasonable-- can hunt for a split second before locking into focus. Not as fast as my DA 40mm or FA 35mm, however. Still, it's a nice combination with the metal build of the lens balancing well with the aluminum K-01 body. Here's what it looks like:







05-17-2014, 02:46 PM   #14
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It's encouraging to hear you are getting good results with this combo.
It looks like lens will balance nicely with the body.

If AF and some AE mode prove reliable I plan to shut off the LCD and rely solely on the optical finder.
Should be fun!

Chris
05-17-2014, 07:50 PM   #15
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K-01 with the SMC Pentax 1:2.8 24mm

At f/5.6 and close to the subject, this photo shows the DOF in range approximately 1 ~ 2.2 metre.

The AF360 fgz was set to A mode, it auto sets to the camera's iso of 400 but has to be manually set for the K lens FL

The lens was set on the scale at a bit under 2 metre (estimated)
The near and far finials are just starting to show visible oof at full screen on 22 inch.
https://app.box.com/s/yopjcc1dh4n4ozg543om
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