Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
11-07-2010, 03:08 PM   #1
New Member




Join Date: Oct 2010
Location: PA
Posts: 6
Quantaray lens-how to connect to my Pentax Kx

I was given a quantaray 70-210mm lens from a friend. Is there an adaptor that i can buy to connect this to my Kx? Sorry if this is a dumb question, I'm a newbie at this.

Thanks,

Jeff

11-07-2010, 03:12 PM   #2
Administrator
Site Webmaster
Adam's Avatar

Join Date: Sep 2006
Location: Arizona
Photos: Gallery | Albums
Posts: 40,979
No, you don't need an adapter, as it's a k-mount lens. Just put it on and follow the instructions for M&K lenses (ignore the screwmount info/adapter):

https://www.pentaxforums.com/forums/pentax-lens-articles/110657-how-use-manua...7-k-x-etc.html

Adam
PentaxForums.com Webmaster (Site Usage Guide | Site Help | My Photography)



PentaxForums.com's high server and development costs are user-supported. You can help cover those costs by donating. Or, buy your photo gear from our affiliates, Adorama, B&H Photo, or Topaz Labs, and get FREE Marketplace access - click here to see how! Trusted Pentax retailers:

11-08-2010, 04:57 PM   #3
New Member




Join Date: Oct 2010
Location: PA
Posts: 6
Original Poster
Adam,

Can't get it to fit. It is a Quantaray 55mm lens, 70-210mm
11-08-2010, 05:19 PM   #4
Veteran Member
alohadave's Avatar

Join Date: Jan 2008
Location: Quincy, MA
Photos: Gallery | Albums
Posts: 2,024
QuoteOriginally posted by jfegan12 Quote
Adam,

Can't get it to fit. It is a Quantaray 55mm lens, 70-210mm
Can you take a picture of the front of the lens, and the back part and post them here?

Does your friend shoot Pentax?

11-08-2010, 05:46 PM   #5
New Member




Join Date: Oct 2010
Location: PA
Posts: 6
Original Poster
View Picture EXIF
Name:  Quantaray Lens front.jpg
Views: 1026
Size:  93.2 KB

View Picture EXIF
Name:  Quantaray lens rear.jpg
Views: 901
Size:  83.0 KB

View Picture EXIF
Name:  Quantaray lens side.jpg
Views: 946
Size:  97.2 KB
11-08-2010, 05:49 PM   #6
mel
Veteran Member
mel's Avatar

Join Date: Feb 2008
Location: Virginia
Photos: Gallery | Albums
Posts: 2,531
Look at that funny notch on the upper right. Is that a K-mount? I've never seen a notch like that. I have an old Quantaray K-mount 135, and a newer (10ish years) Quantaray zoom. No notch like that on either of them.
11-08-2010, 05:57 PM   #7
Pentaxian




Join Date: Feb 2009
Location: Alameda, CA
Posts: 3,194
Looks like Minolta MC/MD mount, won't fit a Pentax camera.

I don't think there is any adapter. But if there were, the value of the lens would not be worth it.
11-08-2010, 06:02 PM   #8
Site Supporter
boriscleto's Avatar

Join Date: Dec 2009
Location: Liverpool, NY
Photos: Gallery
Posts: 12,302
There is an optically corrected adapter for the Minolta MD mount, but it is not worth it for that lens.

11-09-2010, 07:12 AM   #9
New Member




Join Date: Oct 2010
Location: PA
Posts: 6
Original Poster
Thanks so much for the help. Its great for those of us who are new at this to have a place to get good advice and answers.

Jeff
11-09-2010, 10:30 AM   #10
Veteran Member




Join Date: Jun 2007
Location: Owego, NY
Posts: 976
QuoteOriginally posted by jfegan12 Quote
I was given a quantaray 70-210mm lens from a friend. Is there an adaptor that i can buy to connect this to my Kx? Sorry if this is a dumb question, I'm a newbie at this.

Thanks,

Jeff
Some info on Quantaray - Quantaray is Ritz Camera's store brand. In general, Ritz rebadges products made by other manufacturers under the Quantaray brand. For example, the Quantaray 70-300 available in 2007 was a rebadged Tamron 70-300 lens. In other years it has been a Sigma 70-300. Most Quantaray flash units are rebadged Promaster units. Quantaray tripods appear to be Sunpaks.

When you have a third-party lens (Sigma, Tamron, Tokina, etc) you need to determine which mount the lens is meant for. If it's K-mount, it'll attach without any troubles. If it's not K-mount - You'll need a lens mount adapter, but in many cases a lens can't be adapted to K-mount without either corrective optics or giving up infinity focus. Also you'll likely lose aperture control with any mount adapters.

Some posters above improperly assumed that it was a K-mount Quantaray lens (which is possible - I have a K-mount Quantaray 70-300, the aforementioned rebadged Tamron), in your case it was a false assumption.
11-09-2010, 11:59 AM   #11
Pentaxian
Lowell Goudge's Avatar

Join Date: Jan 2007
Location: Toronto
Photos: Gallery | Albums
Posts: 15,314
there is an optically corrected Minolta MD to PK adaptor that will let the lens work in stopped down mode (like a takumar) I can't say I have tried the minolra adaptor but I have tried the nikon and canonn ones. They behave like a small teleconverter, the nikon adaptor with a mag ratio of 1.25 and the canon one at 1.45 I suspect the MD adaptor will be somewhere in the middle as a function of it's different regestry distance,

optically these adaptors are very poor at large apertures, with lots of colorbleed but stopped down are reasonable in IQ.
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, kx, pentax lens, quantaray, slr lens
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
Pentax Quantaray 70-210 MM Lens Universal Mount ajmohler Pentax SLR Lens Discussion 1 01-14-2010 11:28 PM
For Sale - Sold: 100-300mm lens for Pentax AF Quantaray jgmankos Sold Items 6 11-27-2009 06:11 AM
For Sale - Sold: quantaray 2X Autofocus teleconverter; Pentax 18-55mm kit lens idler Sold Items 9 07-02-2009 12:06 PM
For Sale - Sold: Quantaray 2X Tele Converter For Pentax Autofocus lens BRAND NEW jjdgti Sold Items 15 06-10-2009 02:34 PM



All times are GMT -7. The time now is 01:35 PM. | 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