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10-21-2015, 10:26 PM   #541
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QuoteOriginally posted by Ex Finn. Quote
Great looking portrait. I would call that lens rendering pleasing.
Would love to see more portraits with various backgrounds/foregrounds and distances to those backgrounds. Bokeh looks nice so far but not enough to tell. Very nice to hear the autofocus is relatively fast and accurate. Maybe something else to save up for!


10-22-2015, 12:18 AM   #542
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QuoteOriginally posted by JibbaJab Quote
nice to see samples from a new product that shipped on time.
That's certainly one of the advantages of partnering with a reliable supplier - like Tamron.
Maybe they should have used them for the 70-200 too.
10-22-2015, 06:11 AM   #543
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Thank you rondec for sharing this lovely picture! And please stick to your kind of sample pics! Real-life-pictures are appreciated a lot! Don't switch to shooting focus charts or so...

More portrait (and maybe landscape) work is highly welcome!

Last edited by zeitlos; 10-22-2015 at 06:21 AM.
10-22-2015, 07:45 AM   #544
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QuoteOriginally posted by Rondec Quote
Quiet and pretty speedy auto focus.
How much is the speed of the autofocus determined by the lens vs the body? I read that some of the autofocus features of the new 150-450mm only work on K3 and newer bodies which makes me wonder if this lens won't focus as quickly on the K-30.

10-22-2015, 07:59 AM   #545
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QuoteOriginally posted by Newtophotos Quote
How much is the speed of the autofocus determined by the lens vs the body? I read that some of the autofocus features of the new 150-450mm only work on K3 and newer bodies which makes me wonder if this lens won't focus as quickly on the K-30.
I think it will be fine. This lens doesn't have any of the odd features with buttons that deliver the focus to a certain location instantaneously. Big thing is that motor on this lens seems to be faster -- probably fifty percent faster than my other SDM lenses. Feels more like the DC motor lenses I have used. Focus throw isn't terribly long either and my guess is that the focus can go from end to end in under 0.5 seconds.

All this is "feel" though. It would be interesting to actually time one lens versus the other using video or some such way.
10-22-2015, 08:21 AM   #546
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QuoteOriginally posted by Rondec Quote
I posted this elsewhere, but I did get the lens tonight. It is a chunk. Quiet and pretty speedy auto focus. Seems sharp at f2.8 throughout the range. Has some issues with flare, but not surprising how much glass is there. No purple fringing that I could see.

This is my son at 70mm f2.8 (full size on Flickr).

Very nice shot, Rondec! I don't mind if one can't tell much about sharpness from this shot (ISO is too high for that anyway), but I think it shows that the lens has a nice rendering and bokeh at that focal length.
10-22-2015, 11:44 AM   #547
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QuoteOriginally posted by Rondec Quote
I think it will be fine. This lens doesn't have any of the odd features with buttons that deliver the focus to a certain location instantaneously. Big thing is that motor on this lens seems to be faster -- probably fifty percent faster than my other SDM lenses. Feels more like the DC motor lenses I have used. Focus throw isn't terribly long either and my guess is that the focus can go from end to end in under 0.5 seconds.

All this is "feel" though. It would be interesting to actually time one lens versus the other using video or some such way.
Do you think this lens could still be used as a general walk around lens or is it awkward given it's narrower field of view?
10-22-2015, 11:51 AM   #548
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N.B. re: 24-70 as "walk-around"
My personal walk-around kit is FA 24-90 on my K-5ii and a DA21 in my pocket.

10-22-2015, 12:12 PM   #549
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QuoteOriginally posted by Newtophotos Quote
Do you think this lens could still be used as a general walk around lens or is it awkward given it's narrower field of view?
It would depend. I think there are a lot of folks who are comfortable walking around with a 28-75mm lens on a crop camera and if you like a longer lens, then this would work fine. I would prefer something that goes to at least 18mm on crop frame.
10-22-2015, 12:19 PM   #550
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QuoteOriginally posted by Rondec Quote
It would depend. I think there are a lot of folks who are comfortable walking around with a 28-75mm lens on a crop camera and if you like a longer lens, then this would work fine. I would prefer something that goes to at least 18mm on crop frame.
Before having the Tamron 17-50, I mostly used the 28-75 (I still have it) and used it a lot for landscapes. When I needed wider than 28mm, I simply stitched 3 or 4 photos in portrait orientation, that's about equivalent to shooting 28mm on FF / about 19mm on APSC. The reason why I like the 28-75 focal range is because we one lens, I could cover from 19mm to 75mm and with a f2.8 lens. I can easily imagine that the 24-70 can be used the same way with even better IQ and silence AF. Below, stitch with Tamron 28-75 @28 with K200D.
Attached Images
 

Last edited by biz-engineer; 10-22-2015 at 12:38 PM.
10-22-2015, 12:55 PM   #551
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I like having a weather sealed lens that goes to 16mm on crop frame. If there was a sealed 10-24mm lens, that would probably become my preferred walk around lens. But we all differ.
10-22-2015, 01:01 PM   #552
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QuoteOriginally posted by Rondec Quote
I like having a weather sealed lens that goes to 16mm on crop frame. If there was a sealed 10-24mm lens, that would probably become my preferred walk around lens. But we all differ.
Fair enough. I was also replying for people thinking about using the DFA 24-70 on their K-5, K3 etc...
10-22-2015, 01:55 PM   #553
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QuoteOriginally posted by Newtophotos Quote
Do you think this lens could still be used as a general walk around lens or is it awkward given it's narrower field of view?
My first upgrade lens I ever bought was the Tamron 28-75mm f/2.8. It suited me for a walk-around lens because I take a lot of people pictures (my kids and their activities), and the range is perfect for that. The long end lets you get really great portraits and avoid invading people's personal space, and the wide end can fit a small group of people.

But if someone is more into landscapes and such, then a 17-50mm type range would be more suitable, but of course the portrait capability would suffer.
10-22-2015, 10:55 PM   #554
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Anyone see this lens for sale anywhere in Australia yet?
Still not even listed on pentax.com.au.
10-25-2015, 01:53 PM   #555
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QuoteOriginally posted by biz-engineer Quote
Before having the Tamron 17-50, I mostly used the 28-75 (I still have it) and used it a lot for landscapes. When I needed wider than 28mm, I simply stitched 3 or 4 photos in portrait orientation, that's about equivalent to shooting 28mm on FF / about 19mm on APSC. The reason why I like the 28-75 focal range is because we one lens, I could cover from 19mm to 75mm and with a f2.8 lens. I can easily imagine that the 24-70 can be used the same way with even better IQ and silence AF. Below, stitch with Tamron 28-75 @28 with K200D.
That's a great picture. Do you have to be mounted on a tripod to stitch photos together which such good results? Is there a specific option for stitching in Photoshop?

I wonder if this is possible when looking up (and being slightly shakey) and taking pictures of architecture. If so maybe I can leave my UWA at home more often.
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