Originally posted by Simen1 Can you show a test image of K-1 + TC + DA*300 and one without the TC so I can see how much vignetting the TC causes? And if its not to much trouble, one pair of images at close focus and one pair at infinity focus.
Here is the one to infinity (with TC), one close focus (with TC- reflections in water), one for BIF (with TC slightly misfocused on an eye)
First it seems not much trouble, easy to fix it in LR, but when, for example, the bird is in tight frame, the "radiant" shadows are a pain to fix in LR fast.
---------- Post added 06-21-16 at 03:00 PM ----------
Originally posted by pacerr I can't speak for the K-1, but the Tamron Pz-AF 1.4x doesn't vignette on the FF K1000 with either the DA* 300 or Tammy SP AF 70-200.
Yep, I read about Tamron, but really loved Pentax TC. Well it's always crop mode, and K5iis
In case you would like to compare the distance, here is the image of the same buildings as on first picture, taken from the same spot from the balcony with 77mm. 420mm vs 77mm
https://c7.staticflickr.com/8/7409/27202931454_8b8b48fcfb_b.jpg