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Forum: Pentax SLR Lens Discussion
12-24-2012, 06:01 AM
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Hi Pentaxians,
I'm planning to buy the DA18-135 lens for my k-x. The only lens I currently have is the Sigma 30mm/f1.4. I have sold my DA17-70 because of the reach (wide angle is ok but 70mm max. focal length turned out to be too short for me) and the fact that the SDM autofocus didn't always focus reliable. Manual focus is not practical with kids moving around so autofocus has to be perfect reliable in my next lens.
I have read a lot about the DA18-135 but following questions haven't been answered for me yet.
1. Does the k-x internal flash interfere with this lens, resulting in a shadow when using shorter focal lengths, if yes on which focal lengths? (I also have the Pentax AF540FGZ external flash but sometimes it's convenient to use the internal flash).
2. What may I expect in regard to lens creep? For Sigma/Tamron zooms lens creep is generally known, but does this Pentax superzoom also creep after a certain period of usage? It has no lock on the lens barrel.
3. Is vignetting visible with this superzoom lens? Reviews on test charts show up some vignetting but what are your experiences when real life shooting?
4. What are your experiences with lens flare resistance, is it necessary to use a hood in (sunny) daylight?
5. Recently Pentax also has released the DA18-270 (derived from Tamron's 18-270 PZD), how does this compare to the DA18-135? Which of these lenses is favorable for an 'one zoom lens shooter' ? I don't plan to buy more zoom lenses.
Hope you can answer my actual questions left. :)
Thanks!
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Forum: Pentax SLR Lens Discussion
02-17-2012, 02:32 PM
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Thanks for your support so far - very useful - but I still have some questions left:
Which prime will give the best overall performance for shooting indoor playing kids / landscapes / available light / portraits (I will buy only one prime)?
Are there any quality problems to be expected with the Sigma 30/1.4 when I
order a brand new one with the new black matt finish? Are the known quality
issues (front/back focus isssues as well as soft copies) with this lens meanwhile solved? The lens has been introduced in 2005, should meanwhile be solved.
What is the risk getting a bad copy and how should I test on this?
Does the CA/distortion correction on my K-x work when I put a DA35/2.4 on it?
(in this case the lens has been released a couple of years later than the camera, is it backwards compatible?).
What result can we expect from the corners of 30/1.4 in real life landscape shots
(necessarily it can be stopped down for landscape shooting to at least f8)?
Again, thanks for your appreciated help!
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Forum: Pentax SLR Lens Discussion
02-17-2012, 07:33 AM
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Hi all,
I´m deciding between the Pentax DA 35mm f/2.4 and Sigma 30mm f/1.4, what should I choose?
The lens I bought together with the K-x was the DA17-70, which I still use. I would like to go into primes mainly because of image quality (which shoud be better than my zoom) and low light performance which I miss a bit in my DA zoom. I can't or wouldn't take my flash everytime/everywhere I go, beside that I like available light photography.
I'm searching for a nice prime, preferably a normal FOV, so not (ultra)wide/tele which I can use in general. The use of my new prime mainly will be indoor low light, but also general photography (indoor/outdoor) being more creative with one focal length instead of continuously zooming / framing. It would be nice if the new prime is lighter in weight than my zoom, however this is not a must have.
Are there maybe any (third party) alternatives I should consider? BTW, I do not shoot a lot of macro is not a must have feature for me.
Budget: +- EUR 400,= max.
I appreciate all help and tips, preferably from people who own more than one normal prime and advise based on own practice.
Many thanks in advance!
Pentax K-x | DA17-70/f4 | AF540FGZ
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