Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-14-2016, 04:03 AM   #1
New Member




Join Date: Mar 2016
Posts: 6
Can I use lenses for Pentax-k5 on Pentax-k1 if I upgrade ?

Hi all,

I am using Pentax-K5. I have sigma 18-250mm, Tamron 100 mm macro, Pentax 50 mm lenses. I am planning to buy Pentax 35 mm also. If I upgrade my camera to Pentax-K1, can I use these lenses ?

Thank you .

12-14-2016, 04:19 AM   #2
Pentaxian
Paul the Sunman's Avatar

Join Date: Aug 2011
Location: Melbourne
Photos: Gallery
Posts: 2,086
Yes, but some only in crop mode.

The Sigma 18-250 is a crop lens. I am unaware of a Tamron 100mm macro; do you mean the 90mm? That is Full Frame, and performs beautifully on the K-1. The Pentax 50mm f/1.4 and f/1.7 are both full frame. Which 35mm are you talking about? The f/2.4 AL is a crop lens, but I think gets reasonably close to FF.
12-14-2016, 04:46 AM   #3
New Member




Join Date: Mar 2016
Posts: 6
Original Poster
QuoteOriginally posted by Paul the Sunman Quote
Yes, but some only in crop mode.

The Sigma 18-250 is a crop lens. I am unaware of a Tamron 100mm macro; do you mean the 90mm? That is Full Frame, and performs beautifully on the K-1. The Pentax 50mm f/1.4 and f/1.7 are both full frame. Which 35mm are you talking about? The f/2.4 AL is a crop lens, but I think gets reasonably close to FF.
Thank you for the quick reply. sorry Tamron 90 mm macro 2.8, Pentax SMC DA 50 mm 1.8. Planning to buy Pentax SMC DA 35 mm
12-14-2016, 05:13 AM   #4
Pentaxian
KiloHotelphoto's Avatar

Join Date: Jan 2015
Location: Glen Mills, PA
Photos: Albums
Posts: 654
The DA 50 1.8 works very good in FF mode on the K-1. I just tried it out for the first time a couple weeks ago and was very happy with the results. I just bought the DA 35 but have not had a chance yet to try it out yet, but people do say it's almost a FF lens.

12-14-2016, 07:56 AM   #5
Veteran Member




Join Date: Sep 2013
Location: Sydney
Photos: Albums
Posts: 844
If you're talking the DA35 f2.4 (and not the limited), then yes it will work. The plastic fantastic 35 and 50 lenses seem a little flat and dull on the k-1 to my eyes - certainly they are better lenses on APSC imho. (But I am comparing them to FA limiteds, so make of that what you will). Your macro lens should really shine however. The 18-250 is probably going to be crop mode only.
12-14-2016, 08:08 AM   #6
Pentaxian
Site Supporter
normhead's Avatar

Join Date: Jun 2007
Location: Near Algonquin Park
Photos: Gallery | Albums
Posts: 32,753
QuoteOriginally posted by robthebloke Quote
If you're talking the DA35 f2.4 (and not the limited), then yes it will work. The plastic fantastic 35 and 50 lenses seem a little flat and dull on the k-1 to my eyes - certainly they are better lenses on APSC imho. (But I am comparing them to FA limiteds, so make of that what you will). Your macro lens should really shine however. The 18-250 is probably going to be crop mode only.
What he said. ^
12-14-2016, 09:25 AM   #7
Loyal Site Supporter
Loyal Site Supporter




Join Date: Mar 2015
Photos: Gallery | Albums
Posts: 6,294
QuoteOriginally posted by robthebloke Quote
The 18-250 is probably going to be crop mode only.
I put this on one of my film bodies a short while back and it appeared to vignette (in circular fashion, no less!!) at every focal length. Not a full-frame lens by any stretch of the imagination. The good thing about crop mode with the K-1 is that the crop zone is crammed full of AF points, and going up from a K-5, the small hit you'll take in sheer megapixels in crop mode should be compensated by everything else the newer camera can do better.
12-14-2016, 01:10 PM   #8
Site Supporter
Site Supporter
kiwi_jono's Avatar

Join Date: Dec 2009
Location: Christchurch, New Zealand
Photos: Gallery | Albums
Posts: 1,409
I would like to add, that I have a K-5 and have just received a K-1 and I'm impressed with the image quality when pixel peeping. While I intend to use mine mostly in FF mode, in my opinion overall image quality in crop is somewhat better than the K-5 (original version anyway) - largely due to having no low pass filter. The improved AF in particular is very welcome!

12-14-2016, 05:43 PM   #9
Loyal Site Supporter
Loyal Site Supporter
clackers's Avatar

Join Date: Jul 2013
Location: Melbourne
Photos: Albums
Posts: 12,806
Even the 18-250mm will work, Photo-king, but the picture will be the same framing as your K-5 and will only have 15Mp.
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!
camera, dslr, k-5, k-5 ii, k-5 iis, k5, lens, lenses, lenses for pentax-k5, mm, pentax, pentax k-5, pentax-k, pentax-k5, pentax-k5 on pentax-k1, upgrade
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Where can I get free for commercial use Photos of Pentax K-70, other cameras & lenses anu l General Photography 3 06-25-2016 09:43 AM
Can I use outer bayonet Pentax 6x7 lenses on Nikon? MorgothV8 Pentax Medium Format 7 05-14-2016 10:07 AM
Can I safely use any of these old lenses on a K5? pyrs n finns Troubleshooting and Beginner Help 5 01-27-2014 02:05 PM
Can I use my Dslr Pentax lenses on a film SLR? Billium28 Pentax Film SLR Discussion 25 10-19-2010 05:51 AM
Can I use M42 screwmount lenses on my Pentax K-mount (D)SLR? Adam Pentax Lens Articles 37 09-21-2009 12:56 AM



All times are GMT -7. The time now is 01:16 PM. | 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