Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
01-25-2014, 07:37 PM   #16
Veteran Member

Join Date: Dec 2010
Location: SoCal
Photos: Gallery | Albums
Posts: 513
The only lens that I've used that wasn't screw drive was my Rokinon 85mm f/1.4 (manual focus) and the rented Pentax 18-135WR. I haven't tried an SDM yet, and the motor on the K-30 is pretty good.
You'll notice (maybe not on the k-x) that the camera drive motor does have some good twist - and can cause a bit of movement if you're not expecting it (compared to DC motor on 18-135WR).

01-26-2014, 02:30 PM   #17
Senior Member

Join Date: Jul 2011
Location: Mississippi
Photos: Gallery | Albums
Posts: 282
Original Poster
Yeh, it's a great lens and working with it while waiting for it to sell, I've gotten use to the screw drive a little better..........IDK, thinking abo0ut keeping it now..........especially since nobody seems interested in it. I've got it priced to move too!!!!!
01-26-2014, 03:56 PM   #18
Veteran Member

Join Date: Sep 2013
Posts: 306
I have tamron 17-50, 28-75 and sigma 17-70 v1. There is not so much difference in these lenses, biggest difference is having 17-28mm and 50-75mm focal lenghts and HSM. Sigma 17-70v2 should be even better than mine v1 and os not eating batteries anymore. If want to manage with one lens only i would leave tamron 28-75 out cos its just not wide enough for general use.

17-50 is little short but can crop little after always. But HSM is nice to have and focal lenght 17-70 is really enough for many pics in general use, lens is sharp even wide open so i would probably choose sigma 17-70 also. My sigma 17-70 focusing accurancy is better than my tamron lenses, its enjoy to use cos of that. Still i use tamron 17-50 more than any other lens...but my sigma is v1 and eats batts fast!

So i think u made wice choise, they are all good zooms anyway

  • Submit Thread to Facebook Facebook
  • Submit Thread to Twitter Twitter
  • Submit Thread to Digg Digg
Tags - Make this thread easier to find by adding keywords to it!
28-75mm f2.8 vs, f2.8 vs sigma, f2.8-4, k-mount, pentax lens, sigma, slr lens, tammy, tamron 28-75mm f2.8, vs sigma 18-50mm
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: TAMRON 28-75mm F2.8 / TAMRON 17-50mm F2.8 "MINT" price dropped! trustkor Sold Items 2 07-26-2012 06:34 PM
For Sale - Sold: FA 50mm f1.4 / D FA 100mm f2.8 Macro / FA 77mm 1.8 Ltd / TAMRON 28-75mm f2.8 trustkor Sold Items 7 07-13-2012 10:43 PM
Sigma 18-50/f2.8 vs Tamron 28-75/f2.8 vs Sigma 24-70/f2.8? raider Pentax SLR Lens Discussion 3 08-07-2007 04:26 PM

All times are GMT -7. The time now is 09:14 AM. | See also:, part of our network of photo forums!
  • Red (Default)
  • Green
  • Gray
  • Dark
  • Dark Yellow
  • Dark Blue
  • Old Red
  • Old Green
  • Old Gray
  • Dial-Up Style
Hello! It's great to see you back on the forum! Have you considered joining the community?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]