Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
03-04-2010, 09:20 PM   #1
Veteran Member




Join Date: Jul 2009
Posts: 1,296
Sigma 100-300mm f/4 versus Pentax DA* 60-250mm f/4

I've read about every review of the Pentax 60-250 and Sigma 100-300 on here and elsewhere on the net, but I still can't quite figure out which one comes out on top. They were the same price new at B&H last time I checked.

I recently bought a second hand Sigma 100-300 f/4. The lens has some exceptional reviews, but unfortunately that was a seriously flawed copy:
https://www.pentaxforums.com/forums/pentax-slr-lens-discussion/91477-sigma-10...us-issues.html

I was refunded for that lens and it has been sent off to Sigma for repair. I still have the option of re-purchasing it if the guy I bought it off has it repaired. It was NZ$1000, so US$688.

I've always liked the look of the Pentax DA* 60-250 as well, and now I'm tossing up a few options - the Pentax, the Sigma new or the Sigma repaired.

The Pentax has the edge in sealing, smaller and lighter build, smaller filter size. Possibly a slightly better focal range, but either is good. SDM which could go well or badly.
The Sigma is perhaps slightly sharper, well built but is quite a tank, and lacks HSM. Internal focussing, although that's not really a big deal to me. It lacks sealing but it looks like it could handle a little poor weather. Sounds liek faster AF than the Pentax, although with noise.

What I really want is the lens which is best at f/4. Down to f/8 I doubt there'd be much obvious difference. Both have some good points over the other, as per above, but really I want the one with the top optics.

Any own or has used both these lenses? Does either appeal to you more?

Thanks for help.

03-05-2010, 06:59 AM   #2
Inactive Account




Join Date: Jul 2008
Location: Longueuil, QC
Photos: Gallery
Posts: 91
Have tought about the Sigma 70-200mm f2.8 ?
Buy it new and you will have full warranty (more than pentax), and if you think you need more range, then buy a good f4 300mm lens prime.

I was thinking about the 60-250mm me too, but i want a fast lens, and the Sigma is perfect for that. Also, if i want a little more range, i can use a 1.4x multiplier to acheive 280mm at f4. I heard that the 1.4x Tamron is supposed to work best with this lens on a Pentax ...
03-05-2010, 07:21 AM   #3
Pentaxian
Mike.P's Avatar

Join Date: Mar 2008
Location: South Coast .. UK
Photos: Gallery
Posts: 1,773
I have both.

Sigma: Quicker to focus, better length (for me), takes the 1.4x Sigma TC very well and is even passable with the 2x, screw drive so maybe less prone to breakdown?

Pentax: Better colour rendition, weatherproof, stick it in a bag with say 16-50mm and you are set up.

The 60-250mm does not take a TC very well (tried the Tamron 1.4x and the pentax 1.7x)

Personally I prefer the Sigma but I do take the Pentax when going somewhere special.

60-250mm







100-300mm






Last edited by Mike.P; 01-30-2011 at 02:30 PM.
03-05-2010, 12:18 PM   #4
Veteran Member




Join Date: Jul 2009
Posts: 1,296
Original Poster
QuoteOriginally posted by TanGU Quote
Have tought about the Sigma 70-200mm f2.8 ?
I have considered it, but a don't use a tele that much anyway, and when I do it's usually in OK light. Adding a 300mm prime is too expensive. I think the f/4 trade off is an OK one for more range, as long as they're pretty good at f/4.

QuoteOriginally posted by Mike.P:
I have both.

Sigma: Quicker to focus, better length (for me), takes the 1.4x Sigma TC very well and is even passable with the 2x, screw drive so maybe less prone to breakdown?

Pentax: Better colour renfition, weatherproof, stick it in a bag with say 15-50mm and you are set up.
I'm probably not going to worry too much about a converter. How much quicker do you find the Sigma AF?
And how would you compare the sharpness of your two lenses?

03-05-2010, 12:26 PM   #5
Pentaxian
Mike.P's Avatar

Join Date: Mar 2008
Location: South Coast .. UK
Photos: Gallery
Posts: 1,773
QuoteOriginally posted by CWyatt Quote
How much quicker do you find the Sigma AF?
And how would you compare the sharpness of your two lenses?
Sigma is about 25% faster but remember this is on a K10D .. not sure if it would be faster or slower on the K20D/K-7/K-x.

Sharpness at f4 .. I would say the Sigma has the edge. I also have a Pentax F* 300mm f4.5 and rarely use it since getting the 100-300mm.
03-05-2010, 01:13 PM   #6
Veteran Member




Join Date: Jul 2009
Posts: 1,296
Original Poster
QuoteOriginally posted by Mike.P Quote
Sigma is about 25% faster but remember this is on a K10D .. not sure if it would be faster or slower on the K20D/K-7/K-x.

Sharpness at f4 .. I would say the Sigma has the edge. I also have a Pentax F* 300mm f4.5 and rarely use it since getting the 100-300mm.
I'm just upgrading to the K-7 from the K10D now, partly for the AF speed increase. Couldn't say myself how that would affect these two lenses' AF speeds either.

Sigma might win out if it is noticeably sharper from wide open.
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!
da*, f/4, k-mount, lens, pentax, pentax da* 60-250mm, pentax lens, repaired, sigma, sigma 100-300mm f/4, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax 55-300mm versus Sigma 70-300mm DG APO Macro mazdamazda Pentax SLR Lens Discussion 49 07-27-2010 12:46 AM
Sigma 100-300mm f/4 EX DG HSM or Pentax DA* 60-250mm f/4? Big G Pentax SLR Lens Discussion 3 05-19-2009 04:39 PM
Sigma 100-300mm f/4 versus Pentax DA* 300mm f/4 Tbear Pentax SLR Lens Discussion 5 03-26-2008 07:24 PM



All times are GMT -7. The time now is 02:19 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