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I'm in the market for a new daypack for short hikes of about a half day +. While at the local shop yesterday we checked out some bags for fit, along with the 200-600. It was a struggle to find a backpack it would fit. This got me to thinking, which is never a good idea.
A long zoom is definitely going to happen. I've narrowed it down to 3 choices:
* The 200-600. 12-1/2" L X 4.8" D
* The Sigma 150-600. 10.5" L X 4.3" D
* The Sony 100-400 W/2 X TC. 8" L X 3.8" D
I had not considered the 100-400 before because there's typically IQ degradation with a TC. However, after looking through samples and reviews I'm thinking that it's not very significant. I've seen some jaw-dropping shots made with the combo at 800mm. Another plus is that when shooting M-4/3 at the drag strip the PL 50-200 is my go to, it covers virtually all of the FL's I need when shooting down the wall. In equivalence it's the same FL as the 100-400. The considerable difference in size between it and the 200-600 is enticing. The downside with this combo is the limited aperture with the TC, that being f/11 at the long end. With the A7 IV purported to have good AF down to f/22, that shouldn't be an issue in normal light.
Another option is the Sigma. The 150 wide end is 'close enough' to 100 that it wouldn't change much in that venue. I'd need to move down the wall a bit more but not much. Still, I have my favorite spots. With a savings of 2" in length over the Sony and not needing TC, it too is attractive.
I think the 100-400/TC would be the most versatile but the TC still scares me a bit. Does anyone use this combo? Which would you choose, and why?
A long zoom is definitely going to happen. I've narrowed it down to 3 choices:
* The 200-600. 12-1/2" L X 4.8" D
* The Sigma 150-600. 10.5" L X 4.3" D
* The Sony 100-400 W/2 X TC. 8" L X 3.8" D
I had not considered the 100-400 before because there's typically IQ degradation with a TC. However, after looking through samples and reviews I'm thinking that it's not very significant. I've seen some jaw-dropping shots made with the combo at 800mm. Another plus is that when shooting M-4/3 at the drag strip the PL 50-200 is my go to, it covers virtually all of the FL's I need when shooting down the wall. In equivalence it's the same FL as the 100-400. The considerable difference in size between it and the 200-600 is enticing. The downside with this combo is the limited aperture with the TC, that being f/11 at the long end. With the A7 IV purported to have good AF down to f/22, that shouldn't be an issue in normal light.
Another option is the Sigma. The 150 wide end is 'close enough' to 100 that it wouldn't change much in that venue. I'd need to move down the wall a bit more but not much. Still, I have my favorite spots. With a savings of 2" in length over the Sony and not needing TC, it too is attractive.
I think the 100-400/TC would be the most versatile but the TC still scares me a bit. Does anyone use this combo? Which would you choose, and why?