Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-04-2016, 08:12 AM   #1
Senior Member




Join Date: Nov 2014
Posts: 132
Sigma 50mm F/1.4 EX DG HSM on K1?

I'll be upgrading from K30 to K1 in a few months. Anybody tried this lens on the K1? It supposedly should work as it's FF and K mount but...y'know...
Oh...and while we are at it...I'll use my Sigma 17-50 F/2.8 and 10-20 F/3.5 in crop mode untill I switch to all native FF lenses...any issues I may have?

Thanx

L.G.

07-04-2016, 03:50 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,958
QuoteOriginally posted by gerax Quote
I'll be upgrading from K30 to K1 in a few months. Anybody tried this lens on the K1? It supposedly should work as it's FF and K mount but...y'know...
Oh...and while we are at it...I'll use my Sigma 17-50 F/2.8 and 10-20 F/3.5 in crop mode untill I switch to all native FF lenses...any issues I may have?

Thanx

L.G.
I wouldn't use the 17-50mm, just go for the D FA 28-105mm as a starter. The 10-20mm should be fine toward the long end of the zoom range.

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



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

07-04-2016, 05:11 PM   #3
Loyal Site Supporter




Join Date: Apr 2010
Location: Tennessee
Posts: 5,414
QuoteOriginally posted by gerax Quote
I'll be upgrading from K30 to K1 in a few months. Anybody tried this lens on the K1? It supposedly should work as it's FF and K mount but...y'know...
Oh...and while we are at it...I'll use my Sigma 17-50 F/2.8 and 10-20 F/3.5 in crop mode untill I switch to all native FF lenses...any issues I may have?

Thanx

L.G.
Its a very good 50mm prime. The bokeh is very smooth with the only downside being a little LCA. I have used it for 6 or 7 years now on the K-7, K-5, K-3 and now the K-1. I like it better than the FA 50mm and the DA*55mm, but its not as good as the Sony/Zeiss 55mm or the Fuji 56mm, but those are both $800+ lenses and the Sigma can be bought for $300. As Adam says, the 28-105mm is an excellent all-around lens if you don't need the speed.
07-04-2016, 08:45 PM   #4
Pentaxian
JimmyDranox's Avatar

Join Date: Oct 2012
Location: Ploiesti, Romania
Photos: Gallery | Albums
Posts: 1,585
Sigma 50/1.4 DG is a very nice lens. Used on my K5 IIs, I could focus with AF on sites where I could not distinguished details with my eyes. So dark it was. And I think that it can do miracles on K-1. Not to mention the bokeh. The down side was that focusing wasn't always on spot. But i never shot only once on a subject, just because I know that every lens, once in a wile, can mis the focus on AF.

07-04-2016, 10:26 PM   #5
Loyal Site Supporter
Bengan's Avatar

Join Date: Nov 2012
Location: Stockholm
Photos: Gallery | Albums
Posts: 315
The Sigma 50/1.4 is a great lens. Just remember it's on the list of lenses that may scratch a K-1 body and needs to be modified by Sigma to be on the safe side.
07-05-2016, 12:38 AM   #6
Senior Member




Join Date: Nov 2014
Posts: 132
Original Poster
QuoteOriginally posted by Adam Quote
I wouldn't use the 17-50mm, just go for the D FA 28-105mm as a starter. The 10-20mm should be fine toward the long end of the zoom range.
Thanx; care to explain why? Personal preference or technical issues?

Thanx for all your other relpys. Being that it's on the "to be modified list" means it's compatible and works OK.
It will need to be sent in as well as the Sigma 70-200 F/2.8 HSM...hopefully the Sigma policy will last untill I get the K1.

Best
07-05-2016, 09:08 AM   #7
Loyal Site Supporter




Join Date: Apr 2010
Location: Tennessee
Posts: 5,414
QuoteOriginally posted by gerax Quote
Thanx; care to explain why? Personal preference or technical issues?

Thanx for all your other relpys. Being that it's on the "to be modified list" means it's compatible and works OK.
It will need to be sent in as well as the Sigma 70-200 F/2.8 HSM...hopefully the Sigma policy will last untill I get the K1.

Best
The mark it makes on the body is about 3mm long and as thick as a human hair (at least on mine). Pretty much irrelevant. I literally have to hold it to the light just right to see the contact mark. My metal clasp on my Black Rapid strap has already put a bigger scratch on the body. The Cybersync and Pocket wizards leave bigger marks on the hotshoe.

No reason to by a camera that is built like a tank if you are going to worry about hairline scratches.
07-05-2016, 01:33 PM   #8
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,958
QuoteOriginally posted by gerax Quote
Thanx; care to explain why? Personal preference or technical issues?

Thanx for all your other relpys. Being that it's on the "to be modified list" means it's compatible and works OK.
It will need to be sent in as well as the Sigma 70-200 F/2.8 HSM...hopefully the Sigma policy will last untill I get the K1.

Best
You'll get better results with the FF lens since it uses the entire frame, plus you'll be able to use the entire viewfinder


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



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

07-06-2016, 01:59 PM   #9
New Member




Join Date: Jun 2016
Posts: 21
QuoteOriginally posted by gerax Quote
Thanx; care to explain why? Personal preference or technical issues?

Thanx for all your other relpys. Being that it's on the "to be modified list" means it's compatible and works OK.
It will need to be sent in as well as the Sigma 70-200 F/2.8 HSM...hopefully the Sigma policy will last untill I get the K1.

Best


First off you don't want to shoot in crop mode on the K-1. You will go from 36mp to 15mp :-O


In my experience, a lens made for a crop sensor that works on full frame (without crop mode) will be very soft around the edge of the frame.
07-07-2016, 12:56 AM   #10
Senior Member




Join Date: Nov 2014
Posts: 132
Original Poster
QuoteOriginally posted by AwesomeIan Quote
First off you don't want to shoot in crop mode on the K-1. You will go from 36mp to 15mp :-O


In my experience, a lens made for a crop sensor that works on full frame (without crop mode) will be very soft around the edge of the frame.
I know, that would be just as long as I get a FF 24/70 to replace it. Too bad because I love that lens, very sharp workhorse.
11-02-2016, 09:00 AM   #11
New Member




Join Date: Feb 2015
Posts: 1
No Workee Sigma 50mm f/1.4 on K-1

I can report that the Sigma 50mm f/1.4 (at least the one I had) does not work on the K-1. In fact it just locked the camera up. I could take a picture in manual focus mode but adjusting aperture froze it again. I sent an email to Sigma about getting a firmware fix and they never replied. Too bad cause I think its the best 50mm option for the K-1 at the moment.
11-02-2016, 09:51 AM   #12
Loyal Site Supporter
Bengan's Avatar

Join Date: Nov 2012
Location: Stockholm
Photos: Gallery | Albums
Posts: 315
QuoteOriginally posted by bk-photo Quote
I can report that the Sigma 50mm f/1.4 (at least the one I had) does not work on the K-1. In fact it just locked the camera up. I could take a picture in manual focus mode but adjusting aperture froze it again.

I had my copy on the K-1 last weekend. Worked perfectly. I bought it April last year, but I have no idea how to check lens firmware version. I had it converted by Sigma with the "K-1 fit" this summer, but I don't think they upgraded the firmware.
11-02-2016, 10:28 AM   #13
Senior Member




Join Date: Nov 2014
Posts: 132
Original Poster
QuoteOriginally posted by bk-photo Quote
I can report that the Sigma 50mm f/1.4 (at least the one I had) does not work on the K-1. In fact it just locked the camera up. I could take a picture in manual focus mode but adjusting aperture froze it again. I sent an email to Sigma about getting a firmware fix and they never replied. Too bad cause I think its the best 50mm option for the K-1 at the moment.
Too bad....that was on my list for the 50mm prime...
11-02-2016, 04:12 PM   #14
Pentaxian




Join Date: Jun 2009
Location: GMT +10
Photos: Albums
Posts: 10,576
QuoteOriginally posted by gerax Quote
Too bad....that was on my list for the 50mm prime...
It is hard to tell in advance whether the lens will work or not. Not all of the Sigma lenses initially identified as problematic with the K-1 may cause problems for users, due to slight differences in the firmware on various lenses, and even minute differences in their physical dimensions.

Either way, Sigma has been very good at addressing all of the problems with the offending lenses, so my advice would be that the lens will probably work fine, but that if it doesn't, Sigma will update the firmware and fix the lens mount for free, so no big drama.
11-03-2016, 08:10 AM   #15
Senior Member




Join Date: Mar 2013
Posts: 291
QuoteOriginally posted by Bengan Quote
I had my copy on the K-1 last weekend. Worked perfectly. I bought it April last year, but I have no idea how to check lens firmware version. I had it converted by Sigma with the "K-1 fit" this summer, but I don't think they upgraded the firmware.
Checking firmware version is not possible without proper servicing equipment but "lens id" value from your exif file could give you a hint that firmware is updated.
It is a usual procedure at Sigma to update firmware when lens is in service for some reason, so your firmware is probably updated.
You can check that by comparing "lens id" value from a photo taken with that lens before and after servicing activities.
Also you and @bk-photo probably have different lens ids.

Btw that scratch recall is nothing but the silent way to replace firmware on non-working lens, actually a non-existent problem which is a mask for solving real problem which Sigma does not admit that it exists.

Last edited by banep; 11-03-2016 at 08:25 AM.
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!
dslr, ff, full frame, full-frame, k-1, k1, pentax k-1, sigma, sigma 50mm f/1.4
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax 85mm F/1.4 (discontinued) on a K1 qdfb Welcomes and Introductions 8 05-26-2016 08:49 PM
For Sale - Sold: Pentax DA 40 XS, Sigma 30mm F/1.4, 24mm F/1.8, Tamron 10-24mm, 17-50mm F/2.8 devorama Sold Items 11 06-26-2015 05:52 PM
New Sigma lenses (85mm f/1.4,24mm f/1.4,24-70mm f/2, 135mm f/1.8) are coming? starjedi Pentax SLR Lens Discussion 17 02-10-2015 07:48 PM
Trying to decide between the NIkon 58mm F/1.4 and the Sigma 50mm F/1.4 ElJamoquio Non-Pentax Cameras: Canon, Nikon, etc. 6 08-07-2014 08:35 PM
Pentax SMCP-FA 50mm f/1.4 Lens or Sigma 50mm f/1.4 EX DC HSM? NicK10D Pentax DSLR Discussion 7 06-23-2010 06:21 AM



All times are GMT -7. The time now is 01:30 PM. | See also: NikonForums.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