Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
12-10-2009, 04:02 PM   #1
Veteran Member




Join Date: Feb 2009
Location: Lithuania
Photos: Gallery
Posts: 490
which is better IQ wise

sigma 70-300 APO or pentax 55-300?

which is better in moderate legth like 100mm?
at 200mm?
and at 300mm?

I know that pentax is more expensive, but is it really that much better?

12-10-2009, 05:48 PM   #2
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
I can't see how far apart you are holding your hands when you say "that much", so I can't answer

Seriously, I think just everyone would agree the 55-300 is better - see any of a hundred or so threads over the years comapring these (and the Tamron 70-300, and the DA50-200). Whether it's enough better to be worth the cost is something only you can decide.
12-10-2009, 11:55 PM   #3
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
QuoteOriginally posted by Mystic Quote
sigma 70-300 APO or pentax 55-300?

which is better in moderate legth like 100mm?
at 200mm?
and at 300mm?

I know that pentax is more expensive, but is it really that much better?
Yes ! don't let the price fool you. IQ wise, it deserves to be called a great lens. actually it is cheap if we are going to consider the quality of the images it produces. for me, this lens should worth around 500 bucks. performance is very good honestly speaking and is a very good and flexible alternative to carrying a single big prime 300mm telephoto lens. you won't miss the prime 300mm on a good shooting day and even in a not so good shooting day. it just works nicely.
12-11-2009, 12:49 AM   #4
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,696
The 55-300 trumps all the consumer 70-300s and 75-300s available - easily.
The Tamron/Quantaray may come close, but certainly not matching the quality of the 55-300. That's at any focal length and any aperture.
It's just a well-engineered consumer lens that's worth every cent it costs.

12-11-2009, 01:27 AM   #5
Junior Member




Join Date: Dec 2009
Location: London
Posts: 43
Tamron offers a quasi 'macro' ability and is nice and sharp at longer lengths. It is brilliantly priced but comes with excessive purple frnging.

Sigma has less fringing but is also less sharp.

Pentax is sharper than the Sigma, does not exhibit the fringing of the Tamron, and produces nice colours and contrast. Only downsides are that it doesn't offer any 'macro' capability and AF is slow in challenging situations at longer lengths. With regard to the latter, at least it offers quick shift manual focus - which the other two don't.

In answer to the general question, yes - it is the best compromise of the three consumer telezooms available to us.
12-11-2009, 09:14 AM   #6
Inactive Account




Join Date: Nov 2007
Location: In the present
Photos: Gallery
Posts: 1,870
QuoteOriginally posted by Jon Schick Quote
T
Pentax ... only downsides are that it doesn't offer any 'macro' capability...
On the other hand, in a pinch, you can produce photographs like this (or better... )

Taken with a Pentax K10D with DA 55-300mm, 1/750th f/9.5 at 300mm, ISO 800, hand held.



I think this only adds to the conclusion that overall, with compromises, the 55-300 is the winner.

woof!
12-11-2009, 10:32 AM   #7
Pentaxian
reeftool's Avatar

Join Date: Dec 2007
Location: Upstate New York
Photos: Gallery | Albums
Posts: 8,173
I have a 70-300 Sigma and I think it does a very good job considering the price. It is quite sharp up to around 220mm and a little soft from there to 300mm but still good, especially stopped down. The macro/close up feature only works in the 200-300 range and produces some nice images.

I have seen some beautiful shots from the Pentax 55-300 and to be honest, I would probably buy that lens today if I was shopping to buy a lens that size. I got my 70-300 as part of the package deal with my camera. That said, I have been happy enough with the Sigma that I haven't replaced it.
12-11-2009, 10:38 AM   #8
Veteran Member




Join Date: Feb 2009
Location: Lithuania
Photos: Gallery
Posts: 490
Original Poster
thanks everyone for your input. well by saying "that much better" I meant as if it's priced double the sigma is priced, so I thought if it's twice better..

but in general now I have an opinion.. that pentax is much better.

thanks. again.

12-11-2009, 12:25 PM   #9
Veteran Member




Join Date: Mar 2007
Location: Boston, PRofMA
Photos: Albums
Posts: 3,053
I think the Tamron 70-300 is also good up until 280mm. The Pentax 55-300 is better beyond that surprisingly (most zooms aren't that great at the ends of the range). It's surprisingly good considering you can get it for $70 nowadays...(I bought it when it was $120 and still thought it was a good deal)...
12-11-2009, 12:52 PM   #10
Ash
Community Manager
Loyal Site Supporter
Ash's Avatar

Join Date: Mar 2007
Location: Toowoomba, Queensland
Photos: Gallery | Albums
Posts: 22,696
This one's from the Pentax at 300mm at minimum focusing distance - not macro, but if I wanted macro, I'd be using a dedicated macro lens:

12-11-2009, 02:41 PM   #11
Pentaxian
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
Also, see the Raynox Clob thread in this forum for info on using one of those $50 closeup lenses to give your 55-300 *far* better macro capabilities than either the Sigma or Tamron. Or perhaps one of the larger Marumi closeup lenses I'm getting curious about, to avoid any possible vignetting problems.
12-11-2009, 03:44 PM   #12
Veteran Member
Pentaxor's Avatar

Join Date: May 2009
Location: Vancouver, B.C.
Photos: Gallery
Posts: 6,513
QuoteOriginally posted by Marc Sabatella Quote
Also, see the Raynox Clob thread in this forum for info on using one of those $50 closeup lenses to give your 55-300 *far* better macro capabilities than either the Sigma or Tamron. Or perhaps one of the larger Marumi closeup lenses I'm getting curious about, to avoid any possible vignetting problems.
I have some of the vintage Marumi close-up lenses and they work just fine. though the DOF would appear much thinner and experience a considerable loss of light as you increase the magnification by adding more diopter lens (+1,+2, and +3). but anyways, it works great. a macro ringflash is highly recommended.

Last edited by Pentaxor; 12-11-2009 at 10:58 PM.
12-11-2009, 09:46 PM   #13
Veteran Member
Jodokast96's Avatar

Join Date: Oct 2007
Location: Erial, NJ USA
Photos: Gallery | Albums
Posts: 2,132
Haven't used the Pentax, but I've had the Sigma since day one with my camera. Nothing can touch it's fringing and abberation control in this product segment, but the Pentax IQ seems much better overall, and probably performs 80-90% as well with the fringing from everything I've seen. Is it worth the extra? Yeah, I think so. Besides, it's got a much more useful range.
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, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
What I want from Pentax...lens wise... lesmore49 Pentax SLR Lens Discussion 28 11-02-2010 10:12 PM
The (not so) Wise Man Of The Desert The Goose Welcomes and Introductions 5 05-11-2010 01:15 AM
What film body - Cost/Performance wise jerrymouse Pentax Film SLR Discussion 24 11-30-2009 07:56 PM
up close and personal, flora wise... dcmsox2004 Post Your Photos! 0 05-13-2009 08:17 AM
Composition wise - which is better DJey Post Your Photos! 15 02-13-2008 04:14 PM



All times are GMT -7. The time now is 10:08 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