Forgot Password
Pentax Camera Forums Home

Show Printable Version Search this Thread
05-16-2008, 11:00 AM   #1
Veteran Member
vievetrick's Avatar

Join Date: Sep 2006
Location: Easthampton - Massachusetts - USA
Photos: Gallery
Posts: 5,175
Kenko 2X MC7 DG Teleplus Autofocus Teleconverter for Pentax AF

Kenko | 2x DG AF Tele-Converter for Pentax AF | MC7AFDGPK | B&H

I have a Nikon friend that swears by this Teleconverter. Anyone have any experience with them on Pentax gear?

05-16-2008, 02:30 PM   #2
Loyal Site Supporter
Parallax's Avatar

Join Date: Apr 2008
Location: South Dakota
Photos: Gallery
Posts: 15,779
I have one and the image quality is certainly worth the price. I have found one strange thing though. On my Zeiss f2, the camera still shows an f2 max aperature, but on my Voigtlander f1.4 the camera shows a max aperature of f2.8 and the pictures overexpose 2 stops. I don't know if this is a quirk of the converter or the lens but the simple fix is to set the ev comp for -2, or meter stoped down in manual with the green button.
05-16-2008, 03:46 PM   #3
Veteran Member
channeler's Avatar

Join Date: Jun 2007
Location: Northwich Cheshire England
Photos: Gallery
Posts: 1,008
Hi Pat, I have also found the Kenko MC7 DG 2x to be a good TC. Here are a few bird shots with the DA*300 + TC

I also did some test crops of images including the 2x TC which you can find here

The 2x requires an aperture of F4 or brighter to get AF, but I can't get AF with the DA*300
even with its F4 aperture. I have to use manual focus.

I agree that left to its own devices metering seems to overexpose, but I generally find -0.5 or -1.0 is sufficient compensation. This may vary perhaps with the lens/TC combination. I suspect in my case that I've been using AV mode a lot combined with spot metering and just with a slight movement of the camera the exposure will change and overexpose the main subject. I would be better using the exposure lock or using manual metering to get full control of exposure.

05-16-2008, 06:43 PM   #4
Veteran Member
vievetrick's Avatar

Join Date: Sep 2006
Location: Easthampton - Massachusetts - USA
Photos: Gallery
Posts: 5,175
Original Poster
Thanks guys for the examples and info. I may look into one as the price is not that bad. again thanks


  • 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!
2x, af, k-mount, pentax, pentax lens, slr lens, teleconverter, teleconverter for pentax
Thread Tools Search this Thread
Search this Thread:

Advanced Search

Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Kenko AF 2x Teleplus MC7 DG Teleconverter for Pentax (US) montoblan Sold Items 0 10-27-2010 11:45 AM
For Sale - Sold: Kenko PZ-AF 2 x Teleplus MC7 Teleconverter (Worldwide) Mike L Sold Items 2 08-17-2010 06:14 PM
Kenko MC4AFDGP Kenko 2X Teleplus MC4 DG Teleconverter for Pentax AF jimH Pentax SLR Lens Discussion 0 11-23-2009 04:20 PM
Please post images taken with Kenko TelePlus 2X MC7 TeleConverter pcarfan Pentax SLR Lens Discussion 2 05-10-2009 03:10 PM
For Sale - Sold: Pentax K100D, Kenko 2x Macro Teleplus MC7, Pentax Pz-1, Pentax AF500 Flash hinman Sold Items 28 09-25-2008 10:46 AM

All times are GMT -7. The time now is 06:25 AM. | 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]