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09-20-2009, 06:19 PM   #16
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I find it's pretty slow to focus though, don't you? (That is when going from one end to the other)

09-20-2009, 06:25 PM   #17
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QuoteOriginally posted by Arpe Quote
I find it's pretty slow to focus though, don't you? (That is when going from one end to the other)
Well for one, the focus throw from infinity to min focusing distance is quite a lot.
Secondly this lens is not even f/5.6 racked out at 300mm (why f/5.8?), so the camera's AF will struggle to lock focus and hunt when the light levels are low.
It definitely focuses faster on the K-7 than on the K20D.
09-20-2009, 08:35 PM   #18
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Yeah, I'll attest to the reality that focus speed can be slow, especially when going from minimum focus to infinity and back.

After shooting my son's soccer game over the weekend, you can cut the delay by pre-focusing on either end of the range with quick shift before hitting AF/shutter.

@230mm, F5.6, 1/500

09-20-2009, 10:21 PM   #19
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I always forget about quick-shift!

09-21-2009, 05:01 AM   #20
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I've found that starting at infinity is less likely to induce hunting than going from close focus to a more distant subject. Anyone else notice this?
09-21-2009, 06:05 AM   #21
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Great purchase and IQ - you will find yourself using this lens a lot as I did.

cheers

Dylan
09-22-2009, 04:41 PM   #22
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This lens seems like a real winner. It can render some very nice bokeh in the right situations. Interestingly, the colour balance seems slightly blue or cool - and I've noticed this with other people's shots as well. Am I imagining things? Anyways, it's a great buy either way.
09-22-2009, 07:25 PM   #23
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QuoteOriginally posted by photogerald Quote
This lens seems like a real winner. It can render some very nice bokeh in the right situations. Interestingly, the colour balance seems slightly blue or cool - and I've noticed this with other people's shots as well. Am I imagining things? Anyways, it's a great buy either way.
No, you're not imagining things. I've found it to be just a tad cool, but like everyone's been saying, this lens is a winner.

09-26-2009, 07:23 AM   #24
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i'm surpised everyone is saying its relatively light, it looks quite heavy
09-26-2009, 07:37 PM   #25
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Heavier than 50-200, yes. Relatively light compared to the 50-135, yes. It's all relative. =)
09-26-2009, 08:50 PM   #26
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I have now shooting for two weekends in bright sunlight that I get the following effect.

If the focus isn't dead on, some photos in bright light exhibit a bit of "soft focus" effect; wondering if this is normal or a defect in my lens? Much different look than a standard out of focus shot (look around the woman's knee or elbow, for example).

09-26-2009, 09:03 PM   #27
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mine does not exhibit anything similar to that......
09-26-2009, 09:12 PM   #28
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It's a nice lens fer sure.
09-27-2009, 07:12 AM   #29
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Here's another sample of that strange OOF effect I'm getting from my lens; I've contacted my vendor in hopes of working through an exchange just in case this is a QA issue.

ISO 200, F5.8, 1/1000

09-27-2009, 08:36 AM   #30
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I'd say your shots have a trace of handshake. Shooting at the long end, any hint of handshake is magnified quite a bit, even with SR. Try using a monopod instead of shooting handheld and you'll see much sharper results.
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