Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-19-2006, 08:50 PM   #1
Site Supporter
slip's Avatar

Join Date: Oct 2006
Location: 2 hours north of toronto ontario canada
Photos: Gallery | Albums
Posts: 3,533
What is a "defective" lens?

I hear all the time about the 3rd party lens manufactures and their not so great quality control.

so what is a poor lens and how would you know? let say that the lens is a very good one and you just got one of those "bad" ones off the assembly line that wasn't caught by quality control

doesn't focus fast enough?

not as sharp? (but how would you compare sharpness if you don't also have a "good" lens to compare it with)

loose build?

any input would be much appreciated because I am going for a sigma 17-70 and am not sure what to look for.

thanks to all!!!

randy

11-21-2006, 03:12 PM   #2
Senior Member
skydragoness's Avatar

Join Date: Sep 2006
Location: Delaware, USA
Photos: Gallery
Posts: 163
I think you named most of the issues to look out for.

Perhaps going to a camera store to get an idea of what the lens should be?

The world of the Minolta mount digital SLR - dyxum.com (although a minolta site) has a very good compiled lens database
There's also
FM Reviews - Main Index

There's a Sigma section. Although the users reviewing lenses are not Pentax owners, at least you get an idea of the quality of the lens.
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!
control, k-mount, lens, pentax lens, quality, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Post your "Park Bench" "or "Picnic Table" images tessfully Mini-Challenges, Games, and Photo Stories 1439 19 Hours Ago 10:06 AM
Do custom "artistic" or even "funny" lens caps evenexist? lovemehate Pentax SLR Lens Discussion 35 02-10-2016 09:10 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
K-mount Experts: How to convert a "KAF2" lens to "KF"? panoguy Pentax SLR Lens Discussion 24 07-08-2010 05:20 PM
"Hunger for a DA*50-135?" or "The DA*50-135 as a bird lens!" or "Iron age birds?" Douglas_of_Sweden Post Your Photos! 4 08-13-2008 06:09 AM



All times are GMT -7. The time now is 05:09 AM. | 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