Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
02-16-2008, 03:44 PM   #1
Forum Member

Join Date: Nov 2007
Location: canada
Posts: 67
How to evaluate the condition of used lenses?

Because I am just new to DSLR (K10D) I don't want to spend a ton of money on lenses until I know better how to use the camera itself so I am considering purchasing some used lenses from my local and very reputable camera shop.

What should I pay special attention to when looking at used lensesto ensure that the glass and mechanics are good?

02-16-2008, 04:02 PM   #2
Veteran Member
Gooshin's Avatar

Join Date: Sep 2007
Location: Toronto, the one in Canada.
Posts: 5,611
if its an old lens with the aperture ring

look at it through a light, rotate the aperture ring, do all the positions correspond to a change in the aperture

put the aperture ring to the smallest hole, use your finger to dingle the aperture leaver, does it do it effortlessly/smoothly

while your doing both pay attention to the glass, are there dust spots inside, are there scratches, is there hazing of the glass

if its a zoom.. ZOOM, does it feel tight and unobstructive?

if its a shotgun zoom, how badly does it creep (put it verticaly see how fast it slides, if at all)

put it on the camera itself, focus close, focus infinity, take a picture, inspect the picture.

if its an A lens, put it on the camera, see if changing the aperture dial does anything, ie, does the camera "read" the lens

if all is good, go for it.
02-16-2008, 04:35 PM   #3
TaoMaas's Avatar

Join Date: May 2007
Location: Oklahoma City
Photos: Gallery | Albums
Posts: 3,195
That's a pretty good guideline for giving a lens a quick check-out. IMO, the biggest thing to look out for is fungus on the inner elements. Mechanical things can always be fixed (but ought to be taken into consideration when deciding how much to pay for the lens), but fungus is deadly. When you're looking into the lens from the front, fungus can show up as an overall haze on an inner element and also sometimes just as a small patch.

  • 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!
camera, k-mount, lenses, pentax lens, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
How can I evaluate a used lens? Muse Pentax SLR Lens Discussion 4 09-13-2010 04:26 AM
Evaluate this potential deal for me! deadwolfbones Pentax Film SLR Discussion 6 03-19-2009 02:23 PM
Please evaluate hardware thru these photos paugie Post Your Photos! 12 10-20-2008 06:07 PM
K200D FF/BF Please Evaluate usapatriot Pentax DSLR Discussion 2 05-10-2008 01:53 PM

All times are GMT -7. The time now is 02:44 PM. | See also:, 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?
Creating a FREE ACCOUNT takes under a minute, removes ads, and lets you post! [Dismiss]