SRA said:
I carried a 28-70 all over Europe this summer along with TC-20EII. They gave me great flexability with my baggage limitations. The only drawback I had was that you cannot move below 50mm with the TC attached.
What happens if you zoom below 50mm?
How did you control the urge to zoom out when the opportunity arose? I'd think it would be like playing golf, and trying to stop right in the middle of your backswing.
What kind of results did the 28-70 deliver with the TC-20EII dragging it down? It becomes an f/5.6 lens, and I'd think it would be pretty slow to focus. And since it needs to be stopped down to reach its sweet spot, its useful range would start at f/8. From what I've seen, even with quality primes, a 2X TC degrades image quality to a significant degree.
Otherwise I highly recommend the combination
Considering the risks entailed, do you thing that's a very responsible recommendation? I'd think a 70-300 zoom would deliver better results at about half the cost of a TC-20EII.