Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
02-12-2020, 08:35 PM   #1
Site Supporter
Site Supporter




Join Date: Feb 2020
Location: North Houston, TX
Posts: 71
18-135WR or 17-70 f/4?

Originally l wanted the 18-135 for my first Pentax body. l assumed the 17-70 would be "high dollar" because of the constant aperture. Checking prices, a used one is close in price to the 18-135. ls the 17-70 WR? The most important feature to me is WR.

02-12-2020, 08:46 PM - 1 Like   #2
Loyal Site Supporter
Loyal Site Supporter
twilhelm's Avatar

Join Date: Feb 2009
Location: Florida
Photos: Gallery | Albums
Posts: 2,342
No, the 17-70 is not WR.

The DA 17-70 gets mixed reviews around here because of the SDM. I’ve had it for many years now and never had an issue. The image quality is superb and I used it for weddings and events as my go-to lens. I did find, as many users had, the focus was hit or miss on the older bodies, ie the K10 up to the K5. Once I paired it to the K3, it became a much better lens, and on the KP, it is an entirely new lens, quick to focus and accurate.

But if you need WR, go with the 18-135 or if you can live with a smaller zoom range, the 20-40.
02-12-2020, 08:52 PM - 1 Like   #3
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 49,225
The 16-85 is the WR replacement for the 17-70mm. Despite not having the fixed aperture, it's a phenomenal lens.

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com server and development costs are user-supported. You can help cover these costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, KEH, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

02-12-2020, 08:58 PM   #4
Site Supporter
Site Supporter




Join Date: Feb 2020
Location: North Houston, TX
Posts: 71
Original Poster
The 20-40 is not enough range. Since the 17-70 is not WR, looks like the 18-135 is my best bet. Thanks.

02-12-2020, 09:01 PM - 1 Like   #5
Pentaxian
Just1MoreDave's Avatar

Join Date: Feb 2007
Location: Aurora, CO
Photos: Gallery | Albums
Posts: 5,586
The DA 17-70 isn't WR. For some reason it has an O ring on the mount as if it was. Who knows why. It also has an SDM motor which carries a higher than normal risk of failure. Because of those two issues, the 17-70 isn't that popular.

The DA 18-135 is WR. It has a different type of focus motor which is much more reliable. It's a pretty good kit-type lens. It does have optical flaws such as vignetting and not very sharp corners, but the zoom range and center sharpness make up for it. It is capable of producing great images. I take mine on vacations because of the versatility. It won't be great at everything but it's a useful tool.
02-12-2020, 09:07 PM   #6
Site Supporter
Site Supporter




Join Date: Feb 2020
Location: North Houston, TX
Posts: 71
Original Poster
QuoteOriginally posted by Adam Quote
The 16-85 is the WR replacement for the 17-70mm. Despite not having the fixed aperture, it's a phenomenal lens.
That one is out of my price range.
02-12-2020, 09:43 PM   #7
Pentaxian




Join Date: May 2014
Location: Pugetopolis, WA
Photos: Gallery
Posts: 494
18-135 and pair it with one of the 55-300s, you can cover a lot of ground.
Neither is perfect, but both are pretty good and consistent performers.
Check out the18-135 reviews here

There used to be a thread with all kinds of great shots members had posted taken with the 18-135, but I can't find it now, I had a couple in it.

There are two WR versions of the 55-300, the newer PLM, which only works on newer bodies, or the older (but not old) HD-WR.
If you are buying a new Pentax APSC body, no problem with either, but if you are looking at an older, used body, you should check compatibility of the PLM
Check Lens Compatibility with Your Pentax Camera

Let us know what you do, and how you like your choice
02-12-2020, 09:47 PM   #8
Site Supporter
Site Supporter




Join Date: Sep 2013
Location: Australia
Photos: Gallery
Posts: 3,592
happy with my 18-135 for what it is, beyond that I prefer prime lenses, although the 50-135 is very good.

02-12-2020, 10:21 PM   #9
Site Supporter
Site Supporter
RGlasel's Avatar

Join Date: Sep 2013
Location: Saskatoon
Photos: Gallery | Albums
Posts: 2,617
QuoteOriginally posted by K-Three Quote
There used to be a thread with all kinds of great shots members had posted taken with the 18-135
Still is, and here is the link. If someone is visiting that thread for the first time, they might want to start with the latest pages and work back, the first 50 of 214 pages have lots of dead links to Photobucket and other photo-sharing services.
02-12-2020, 10:43 PM   #10
Pentaxian




Join Date: May 2014
Location: Pugetopolis, WA
Photos: Gallery
Posts: 494
QuoteOriginally posted by RGlasel Quote
Still is, and here is the link
Thanks, I could not find it earlier,
02-13-2020, 01:43 AM   #11
Site Supporter
Site Supporter
johnha's Avatar

Join Date: Apr 2012
Location: Lancashire, UK
Photos: Albums
Posts: 880
QuoteOriginally posted by Just1MoreDave Quote
The DA 17-70 isn't WR. For some reason it has an O ring on the mount as if it was. Who knows why. It also has an SDM motor which carries a higher than normal risk of failure. Because of those two issues, the 17-70 isn't that popular.
I haven't had any issues with the SDM in my 17-70, on the whole it's a good walkabout lens. Just about wide enough, just about long enough, just about fast enough and just about compact enough.

When I bought it (2012 ish) I think I read it had 'reduced WR' somewhere but can't find any reference to that now.
6 Days Ago   #12
Pentaxian
jddwoods's Avatar

Join Date: Nov 2012
Location: Newark, Delaware
Posts: 942
QuoteOriginally posted by johnha Quote
I haven't had any issues with the SDM in my 17-70, on the whole it's a good walkabout lens. Just about wide enough, just about long enough, just about fast enough and just about compact enough.

When I bought it (2012 ish) I think I read it had 'reduced WR' somewhere but can't find any reference to that now.
The mention of possible reduced WR is in the In depth review of the DA 17-70 that is available in this forum. The in depth review is a comparison of the DA 17-70 to two earlier Sigma versions of their 17-70.
As for me, I bought my DA 17-70 new in 2009 and used it on my K10D, K-5 and K-3 bodies. I had autofocus issues with this lens on all three cameras. When it was new, the autofocus was reliable and fast from 17 up to about 50. From 50 to 70, it was hit or miss where it periodically hunted and failed to lock focus. This was also observed in the in depth review. Around 2014, I started having issues getting the autofocus working on startup, especially if the lens was not used for a week or more. The SDM finally died about late 2015 and since then the lens was not used. in 2016 I looked to either repair it, get the 18-135 or look for a good used 16-85. I ended up getting a like new used 16-85 and am very happy with this lens.
My suggestion to the OP is to proceed with caution in purchasing the 17-70 due to the prevalence of SDM issues. Reading the reviews on this forum and at B&H website is suggested. The 18-135 and 16-85 both use DC motors instead of SDM. Based on my experience with my 16-85, I have zero issues with its autofocus performance.
One other concern with the 17-70 is the focus has a very short focus range. Meaning if the autofocus fails, it is very difficult to use as manual focus lens.
If I knew that repairing my 17-70 would give an improved and more reliable autofocus motor, I would get it fixed, but still, I prefer the 16-85. It is sharper, has a wider zoom range and is WR which more than offsets the constant aperture advantage of the 17-70

Last edited by jddwoods; 5 Days Ago at 06:18 PM.
6 Days Ago   #13
Junior Member




Join Date: Aug 2017
Posts: 39
I think that the 18-135 is a wonderful lens. It is actually quite good and I would not qualify it as a kit-type lens (to be honest: Every not limited or Star lens qualifies for kit-type lens). It is much more than that. It is sharp and it produces lovely colours and it is fun to try close up pictures with. AF is fast and silent. But it is a lens that you have to learn to appreciate. I bought it for the Samsung GX-10 and it replaced the two kit lenses 18-55 and 50-200 and a lot of my old Pentax lenses. What struck me was that it resulted in better pictures than with my old primes and my A F3,5 35-105. It gave even better results than my old Star A 1.4 85mm. Better colours and sharper.
When I mounted the 18-135 to my K-7, which I bought in 2017, it got a bit of extra sharpness and colour. I hope that telling my experience with the lens helps. I just bought it and am pleased with it.
6 Days Ago   #14
Loyal Site Supporter
Loyal Site Supporter
Wingincamera's Avatar

Join Date: Oct 2012
Location: Spanaway, WA. USA
Photos: Gallery | Albums
Posts: 935
I purchased the 18-135 as a kit lens when I purchased my KP and It is a good lens, but above 70 to 80mm mine is not as sharp as in the lower zoom range. As far as the WR goes, mine has been in lots of rain, even a direct hit during a water balloon fight and no problems with lens or camera. I have since gathered more lens and seldom use the 18-135 anymore unless I only want to carry one lens with the possibility of wet weather and I don't want to change lens. Example would be a sidecar trip from Washington state to Yellowstone Park and it pretty much rained the whole trip. I had other lens, but being in the open weather I wasn't able to change lens. I think the 18-135 is a good value and overall a good lens.
Reply

Bookmarks
  • 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!
k-mount, pentax lens, slr lens, wr
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
K-5 with Sigma 17-70 vs 17-50 vs Pentax 18-135 vs Sigma 18-250 dr_romix Pentax K-5 20 08-25-2012 07:19 AM
sigma 17-70 vs Tamron 17-50 vs Pentax 17-70 dr_romix Pentax SLR Lens Discussion 19 07-01-2012 10:15 PM
18-55WR vs 18-135WR ? hoanpham Pentax SLR Lens Discussion 11 02-14-2011 05:48 AM



All times are GMT -7. The time now is 05:21 AM. | See also: NikonForums.com, CanonForums.com 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?
register
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]
Top