Tamron 1.4x Pz-AF MC4 Teleconverter

2008-07-23
Tamron-F AF Teleconverter 
Tamron 1.4x Pz-AF MC4 Teleconverter
1.4x Pz-AF MC4
Tamron 1.4x Pz-AF MC4 TeleconverterOut of 2 month of searching everywhere, I finally found this item sold by another Pentaxian as an used item. This item has been out of production from Tamron and it is a rare item that doesn't show up frequently in eBay and local store. In a way, I take that as real luck on my part in getting this item.

Here are some tele shots taken mostly at 300mm (or 420mm) using the adapter with my Tamron 70-300mm Di LD Macro.

Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter

Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter
Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter

Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter

Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter

Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter
Picture taken with Pentax K10D, Tamron 70-300 Di LD Macro & Tamron 1.4x Pz-AF MC4 Teleconverter

Impressions &  Notes:
  • AF stays on and it is utmost important to me in shooting tele-shot as I need all the help that I can get in focusing.
  • Test shots don't reveal big loss of light and picture quality
  • PF/CA happens more frequently with Tamron 70-300 Di LD Macro
  • With adapter, my Tamron long end comes out reasonably sharp in 420mm. I would expect better sharpness with a tripod. The PF/CA is bummer and I see more at f/8.0 and f/11.0 in the test shots.
  • Physical noise from auto focusing can be pronounced. Once focused around target, noise and speed in auto-focusing is not an issue.
  • Relatively inexpensive way to get to 420mm in good lighting
  • An overall satisfactory purchase, a definite keeper and an highly recommended item from me
  • More information can be found in this long discussion in Tamron 1.4x TC converter pictures
  • Another similar choice is Kenko 1.5x with auto focus that is about half the price of the Tamron. I hear mix reports with some user complaining on inability to autofocus.
  • AutoFocus is key with the Tele especially to catch up with birds movement that need fast action. As much as I love manual focus, I need as much help as I can get from the gear in shooting birds in flight.
  • My version has 7 electrical contacts and 2 inside contacts for the SDM. It has the MC4 in the model.
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