Originally posted by stemked Hi All.
I have come to enjoy many of Tony Northrup's posts on Youtube, but one that had me puzzled. One of his videos suggests (he is talking Canon/Nikon of course) that there is no reason to use a TC unless one is using a full-frame body. I had been kicking around getting the new Pentax TC to use with the 150-450, on my K3 or Kiis. Northrup suggest the sensors are packed so tightly on an APS-C body that there is no image gain with a TC. My own experience with my 600mm f5.6 A + 1.4-L would seem to support that finding although I thought it might just be a bad teleconverter. So is it simply better to crop or use the teleconvertor on a Pentax APS-c body?
Doug
Hello Doug,
I have the Pentax 1.4xTC which I've used with the 150-450 on my K-3 II for birding, and it does help a lot in filling the frame especially when shooting small birds, but the down side is that getting good shots handheld is problematic and requires shutter speeds up around 1/1600...for me at least. Others may have a steadier hand.
If you have any experience with shooting small birds you will know that often you can't get close enough to get a reasonable size in the frame, and cropping such a small subject does lose IQ, so if you can hold it steady, the 150-450 + 1.4xTC can be a good solution.
Cheers,
Terry