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01-17-2013, 06:18 PM   #16
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QuoteOriginally posted by Quicksand Quote
Because the K-01 uses on-sensor contrast detection for autofocus, it really shouldn't be bothered by the kind of focal-length-dependent misfocusing that the Tamron 17-50 seems to be famous for.

I don't have either the K-01 (yet -- waiting for mine to come!) or that lens, so I can't say for sure. But I believe others have reported good AF performance from the Tamron on the K-01.
CDAF is not immune from misfocus, despite what people say. I just received a K-01 and XS 40. The XS 40 backfocusses equally on my K-x and the K-01.

I'm not saying don't buy a 17-50, but anyone buying one should be forewarned, a lot of them suffer erratic focus.

01-17-2013, 07:07 PM   #17
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so what to buy?? I'm about ready to order the kit lens out of frustration. All the 'better' lenses have enough problems that I can't find one all around good lens
01-17-2013, 08:03 PM   #18
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I have several Pentax consumer grade zooms. In ascending order of performance, they are:
  • DA 18-55 (original)
  • DA L 18-55 (same IQ as 18-55 II and WR)
  • DA 18-250
  • DA 18-135
  • DA 55-300
  • DA 16-45

My main kit is built around the 18-135 and supporting primes, plus fisheye zoom. Even though the 16-45 is my best zoom, the 18-135 has taken over for most uses. I like the extended range, silent & quick AF, rounded blades (smooth bokeh) and WR of the 18-135. The main reason for using a zoom is to decrease lens changes, so an extended zoom makes sense to me. I often carry a 2-lens kit consisting of the 18-135 and FA 35mm f2 (DA 35mm is similar). That combo covers a lot of scenarios.

Last edited by audiobomber; 01-17-2013 at 08:21 PM.
01-17-2013, 08:27 PM   #19
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Is there much real-life difference in 18 mm@ 2.8 vs 16 mm @4? I feel that the possible sacrifice in low light abiltiy might be made up in sharpness, better AF with the K01?
I just hate to give up 45- 70mm though!
(tamron 18-50 2.8 vs pentax 16-45 /4)

Am I get too hung up on the number 2.8?

01-17-2013, 08:49 PM   #20
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QuoteOriginally posted by PBandJ Quote
so what to buy?? I'm about ready to order the kit lens out of frustration. All the 'better' lenses have enough problems that I can't find one all around good lens
If you get a new one you get warranty on it, so if you have focus issues they can fix it. Mine is really nice and will be used here at this anime convention I am at. It's decently sharp wide open, and really sharp at 5.6.
01-17-2013, 09:10 PM   #21
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QuoteOriginally posted by PBandJ Quote
Is there much real-life difference in 18 mm@ 2.8 vs 16 mm @4? I feel that the possible sacrifice in low light abiltiy might be made up in sharpness, better AF with the K01?
I just hate to give up 45- 70mm though!
(tamron 18-50 2.8 vs pentax 16-45 /4)

Am I get too hung up on the number 2.8?
Fast apertures at the wide end are not that important. You don't need much light for wide angle, because you can use a low shutter speed. The rule of thumb is 1/(equivalent focal length). At 16mm, you should reliably be able to hold 1/15s, because shake reduction helps to control camera shake. The K-01 can handle elevated ISO without excessive noise. At wide angle, you are normally looking for good DOF. F4 at the wide end is not a problem, but you really should have at least f2.8 in the normal range or mild tele range, for indoor shooting in artificial light and for shallow dof when you need it. That's why I scrapped my recommendation for the 16-45 which you may have seen above.

The Tamron 17-50 will work if it's a good copy, but test it and be prepared to return it if it doesn't perform. A lot of people like the 28-75, but it has no wide angle. I like primes for low light shooting because in general they outperform zooms. The 18-55mm kit lens is a solid choice, that's where most of us started, but of course it's not fast and needs to be stopped down for better performance. The 16-45 is a great lens and sharp at f4, but its strength is wide angle and it's not that fast. Everything is a compromise, that's why most of us have so many lenses.

Last edited by audiobomber; 01-17-2013 at 09:18 PM.
01-18-2013, 12:52 AM   #22
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QuoteOriginally posted by PBandJ Quote
it would be a walkaround/travel lens and also for beginning street photography. Other ideas?
For street photography, the kinds of zooms you've mentioned
are all relatively large, especially with a hood attached,
and may draw unwelcome attention,
or make your subjects react in unnatural ways.

Given your budget, and assuming you want AF,
I'd suggest a DA 35/2.4 for street use.
01-18-2013, 01:39 AM   #23
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QuoteOriginally posted by PBandJ Quote
Docrwm--There were 3 versions of the 28-105. Which did you have/think was good?
I realize that you were addressing Docwrm, but I still have the FA28-105/3.2-4.5. Although I'm sure I don't need it now, I've chosen to keep it because I really like its color image rendering. Apparently there are a few "bad" copies out there that have kept the ratings down a bit, but if you look at the PPG I think you'll see that (even though it's a kit zoom) it's actually a special lens that can render beautiful images. I highly recommend it. I almost mentioned it earlier, but I wasn't sure it was as fast as you wanted, and it's a little awkward to use the DA18-55 to fill in the 18-28mm gap.

01-18-2013, 01:53 AM   #24
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You are expecting too much from one lens.

I would suggest the DA 21/3.2 limited, DA 40/2.8 limited and DA 70/2.4 limited are fast enough and sharp enough for you needs, and compact enough to stuff in pockets if you can't be blowed carrying a tiny camera bag. Buy a double rear lens cap and the two lenses which are not on your camera form a single unit. They all totally rock on the K-01.

Last edited by Sandy Hancock; 01-18-2013 at 03:25 PM.
01-18-2013, 05:52 AM   #25
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QuoteOriginally posted by Sandy Hancock Quote
You are expecting too much from one lens.

I would suggest the DA 21/3.2 limited, DA 40/2.8 limited and DA 70/2.4 limited are fast enough and sharp enough for you needs, and compact enough to stuff in pockets if you can't be blowed carrying a tiny camera bag. Buy a double rear lens cap and the two which are not on our camera form a single unit. They all totally rock on the K-01.
Much to think about here. I am expecting too much; I guess that's why I can't find the 'perfect' one. My K01 came with the XS40, and to keep the budget down to start, I could just add 1 on either side. Thank you all for the advice. I know this has been asked and answered many times over the years!
01-24-2013, 11:25 AM   #26
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Just an update: I ordered the Tamron 17-50 2.8, new in case I need to exchange it.

I will prob add a 10-20 Sigma in the future.

I see a lot of possibilities in the A series. Will prob add A 50/1.7 and would really like a decent quality 35mm (80% of the quality, 20% of the price) later, just to play around.

Love the manual focus on the K01!

I may also get the Tamrac Aria 2 bag, in BERRY!! (I'm a woman) Fun color!

Last edited by PBandJ; 01-24-2013 at 11:41 AM.
01-24-2013, 11:34 AM   #27
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You're going to love the 17-50.
01-24-2013, 11:49 AM   #28
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QuoteOriginally posted by Sandy Hancock Quote
I would suggest the DA 21/3.2 limited, DA 40/2.8 limited and DA 70/2.4 limited are fast enough and sharp enough for you needs, and compact enough to stuff in pockets if you can't be blowed carrying a tiny camera bag. Buy a double rear lens cap and the two lenses which are not on your camera form a single unit. They all totally rock on the K-01.
They pretty much rock on everything!
01-24-2013, 12:21 PM   #29
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maybe it's just me, but so far I find the K-01 is a bit of a drag with large zooms attached.

It is a small camera.

When I run the kit zoom, or the A35-105, or any other zoom, the size of the lens really blows some of the handling and fun of the camera--and faster ones are bigger and WORSE.

OTOH,

When I run the 40mm xs it is fun.

When I run the FA 50 1.4 or the FA 35 f2, or even a smaller tele prime like the A-135 f2.8, it still handles great, is discreet, and fun.

I went out and bought an A-28 f2,8 just to get a smaller, wider prime.

That thing works great, much less of a monstrosity than K-01 with Sigma 28 f1.8

The focus peeking makes manual focus very easy--much better results than I ever got with my K-100d with a split prism screen installed.

The low-light performance is very good, I feel like I can ditch the flash in most situations--within reason.

If I was outfitting this thing I would look for fast primes of A series if I had a budget

An A 28 2.8, an A 50 1.4, an A 100 2.8 may be achievable for $400.

OTOH, if money was not so much an object, I would stick with all of the smaller, pancake DA primes--21, 40xs, 70.

K-01 is very interesting camera, so different than K-20d (my current DSLR).

If you already have lenses for Pentax, it is great to just slap them on there and try it all out...
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