Forgot Password
Pentax Camera Forums Home
 

Reply
Show Printable Version Search this Thread
07-18-2007, 05:12 PM   #1
Veteran Member
borno's Avatar

Join Date: Nov 2006
Location: md-usa
Photos: Gallery | Albums
Posts: 2,580
1.4x tamron k or 140f teleconverter?

I'm looking for a TC for my tamron 300mm f2.8 and was wondering if anyone knows whether a modern k-mount tamron or other 1.4x or 1.5x is as good or better than the adaptall teleconverter 140f? The advantage of the k-mount of course would be useable on other lenses, probably easier to put on too.

Thanks

07-20-2007, 12:58 AM   #2
Veteran Member
roentarre's Avatar

Join Date: Oct 2006
Location: Melbourne, Australia
Posts: 11,794
Hi Tom.

Tamron 1.4 tele does not work well with any of my pentax lenses, especially compromising the colour and sharpness by a mile.

However, the search of Tamron 1.4X used on a quality lens like Tamron 300/2.8 on line reveals a few articles showing reasonable image quality if stopping down the aperture by 1 stop or so. One of the articles written by a Canon pro who uses the combination of Tamron 1.4X and Tamron 300 f2.8 a great set up for wild life photography. Lighter to carry and produce a lot of great images for sale. The corner sharpness is lacking to a degree but it is hardly relevant in wildlife photography.

Sorry, I do not have any clues what 140f tele is ...

Cheers
07-20-2007, 03:09 AM   #3
Veteran Member
borno's Avatar

Join Date: Nov 2006
Location: md-usa
Photos: Gallery | Albums
Posts: 2,580
Original Poster
Thanks for the response james,
The 140f is the tamron 1.4x adaptall converter and will only fit these lenses.
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!
1.4x, k-mount, pentax lens, slr lens, tamron
Thread Tools Search this Thread
Search this Thread:

Advanced Search


Similar Threads
Thread Thread Starter Forum Replies Last Post
For Sale - Sold: Tamron 1.4x Pz-AF MC4 Teleconverter & Quantaray 2x Teleconverter DaveInPA Sold Items 15 09-24-2009 06:28 AM
For Sale - Sold: Tamron Adaptall SP 80-200mm F1:2.8 LD, PK/A Adapter, 140F 1.4x TC emilf Sold Items 0 08-20-2009 09:35 PM
For Sale - Sold: Tamron Adaptall: Adapters P/KA and P/KM, 1.4x TC 140F and 80-210mm 103A lens emilf Sold Items 14 07-07-2009 09:44 AM



All times are GMT -7. The time now is 07:21 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