Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-27-2008, 06:05 PM   #1
New Member




Join Date: Sep 2008
Location: Caracas, Venezuela
Posts: 17
Sigma 18-50mm f/2.8 vs Pentax 18-250mm

Dear Pentax users,

After my last post regarding whether should I upgrade my K10D to a K20D or get the DA* 50-135mm I decided for the DA* as must of you suggested, and wait later to upgrade to the new pentax or the K20D. Now i have the opportunity to sell my Pentax 18-250mm lens to get the Sigma 18-50mm f/2.8 EX DC SLD ELD Aspherical Macro Lens, I even thought of getting the pentax DA* SDM 18-50 but after reading so many negatives about it, and considering that for me, since i leave in another country, returning it will be really difficult, I prefer to passed it. Will this sigma be much better then the 18-250mm, i know its much faster but what about quality. I really do like my 18-250 under bright conditions, but under low light it ain't really that helpful.

Thanks for your time and suggestions.

11-27-2008, 06:36 PM   #2
Pentaxian
bdery's Avatar

Join Date: Mar 2008
Location: Quebec city, Canada
Photos: Gallery
Posts: 5,659
Those two lenses are very different, and it's clear that the Sigma will be better. The 18-250 is very good at what it does, but it's a compromise lens. The 18-50, while apparently slightly below the Tamron 17-50 and a good version of the Pentax 16-50, is still a pro, constant f2,8 lens. It will be a quantum leap in difficult situations.

Read the reviews here of those two lenses, and you will see what most users think about those lenses. Remember that pro-grade users EXPECT pro lenses, so can be more critical.
11-27-2008, 07:32 PM   #3
Veteran Member
SuperAkuma's Avatar

Join Date: Jul 2007
Location: Bay Area, CA
Photos: Gallery
Posts: 445
I do not have the Pentax 18-250mm lens but I do have the Sigma 18-50mm f/2.8 EX DC macro lens. I gotta say the sigma is my favorite all around indoor lens or night time lens. The constant f/2.8 is very usefull with bad lighting. As far as lens sharpness I never did any real test and looked at them at 100% crop. I just look at it in a real world situation like the images that I've took. I never had any problem with the lens not being sharp enough for me.

I just signed up for smugmug.com. If you check out my gallery, most of the image there are taken with that sigma lens. My gallery is still small but you can get a glimpse of how the lens perform.
11-27-2008, 08:20 PM   #4
New Member




Join Date: Sep 2008
Location: Caracas, Venezuela
Posts: 17
Original Poster
QuoteOriginally posted by SuperAkuma Quote
I do not have the Pentax 18-250mm lens but I do have the Sigma 18-50mm f/2.8 EX DC macro lens. I gotta say the sigma is my favorite all around indoor lens or night time lens. The constant f/2.8 is very usefull with bad lighting. As far as lens sharpness I never did any real test and looked at them at 100% crop. I just look at it in a real world situation like the images that I've took. I never had any problem with the lens not being sharp enough for me.

I just signed up for smugmug.com. If you check out my gallery, most of the image there are taken with that sigma lens. My gallery is still small but you can get a glimpse of how the lens perform.

SuperAkuma thanks for your comments. You have some really nice pictures, the fire eater is amazing. I am planning to use the 50-135mm most of the time on the camera, but in case a shorter range is needed i want a lens that wont cut down the quality that much compare to the 50-135mm specially since i want to take concert photos, (friends bands gigs, actually). i just been shooting for almost a year and this is just a hobbie to me, not planning on making a profit, but having the right tools always makes your hobbie more pleasurable.

Thanks and best regards...

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!
18-50mm, da*, f/2.8, f/2.8 vs pentax, k-mount, k20d, pentax, pentax lens, sigma, sigma 18-50mm f/2.8, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax 60-250mm f/4 DA* ED (IF) SDM vs Sigma 70-200 f/2.8 with OS Derridale Pentax SLR Lens Discussion 4 08-14-2010 05:52 AM
Sigma 70-200mm or wait for Pentax 60-250mm Dieni Pentax SLR Lens Discussion 17 08-11-2010 06:19 AM
Which Zoom Lens? "Tamron AF 18-250mm", "Pentax-DA 18-250mm" or "Sigma 18-250mm" hoomanshb Pentax SLR Lens Discussion 4 07-30-2010 09:50 AM



All times are GMT -7. The time now is 04:59 AM. | 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