billnourse wrote:
I have a 70-200 f 2.8 L with 2x teleconverter that I use on a 70D. This setup works very well and I can not see any significant image quality loss with the teleconverter.
This is pricey setup, but for most, Africa is once in a life time situation, and the best equipment possible is the order of the day.
Bill
Canon EF 70-200/2.8L IS [/i]Mark II[/i] with Canon EF 2X
Mark III is a combo that some people find gives acceptable image quality. DO NOT look for as good results with other 70-200/2.8 or earlier Canon 2X or any third party. I have the original 70-200/2.8 IS, 70-200/4 IS and the 2X
Mark II and I WILL NOT use that teleconverter on those lenses. There is just too much loss of image quality. (Also, 70D will not autofocus an f4 lens with a 2X on it.)
Canon 70-200/2.8L IS II sells for $1949 ($150 off right now, normally $2099). Canon EF 2X II sells for $429.
A good alternative would be the Canon 100-400mm. This is only a little larger and heavier than a 70-200/2.8. The 100-400L Mark II is currently on sale for $2099 (normally $2199). This is a superb new zoom. The prior version is pretty decent too.... still available new some places for about $1300. Neither of these can be used with a teleconverter on a 70D.
stewmail wrote:
you can use a 1.4 extender with the Canon 100-400 mm lens.
No you can't on a 70D. It won't be able to autofocus and the viewfinder will be quite dim at 400mm + the teleconverter, making manual focus very difficult.
There also are several 70-300mm Canon lenses. The 70-300 IS USM sells for about $650 usually, but is on sale right now for $450. The the 70-300"L" IS USM usually costs $1350, but is on sale for $100 off right now. And the very compact 70-300 IS USM "DO" costs $1400.
I am a bit concerned that 300mm won't be "long enough" though, for African safari shooting. None of the 70-300s will work well with teleconverter, either.
They are larger and heavier, but the $1000 Tamron 150-600mm VC USD and $1100 Sigma 150-600mm OS HSM "Contemporary" are very popular for their high value. They won't have image quality or focus performance equal to the 100-400mm Mark II, though. The Sigma 150-600mm "Sport" is a better, sharper lens, but a lot bigger, heavier and closer to $2000. None of these will work with a teleconverter, but since they go to 600mm one is unlikely to be needed.
The best lens imaginable is the Canon 200-400mm f4L IS USM with built-in, matched 1.4X teleconverter that converts it to a superb 280-560mm f5.6 with the flip of a lever. However it's quite big, weighs 8 lb... and sells for around $11,000!
Quote:
...upgrade the 7D to a 7Dmk2 for better focusing...
For a long, once-in-a-lifetime type trip I would personally
always take at least a 2nd camera (actually I usually don't travel with less than 3, sometimes more).... I'd take a second, identical camera, if at all possible and hers is a 70D, not a 7D. It's easier to switch back and forth, and always best to use a camera you're familiar with and confident using.
Besides, the 70D's got pretty decent AF. It's a slightly dumbed down version of the original 7D's AF system. Over the course of 5 years I shot a quarter million sports photos with a pair of 7D... and 70D would be almost as capable. Yes, 7DII's AF system is slightly better... But it's also a whole lot more complex! You can fine tune it for best performance in a wide variety situations.... but just as easily can screw up the settings and end up with a lot of poorly focused shots, if unfamiliar with it.
Yeah, renting is a thought for any of the above... But many rental companies prohibit you from taking their gear outside the county. Check their websites for info.