You have 5 options, but all of them are full frame. This includes the following:
Out of all these, the lenses with the greatest variation in focal length includes the Tamron 50-400, Sony 100-400 with 1.5x extender, and the Sony 200-600 with 1.5x extender, but we should also consider size and weight.
The best lens based on size and weight
If you’re looking for small and light telephoto lens, but don’t want to carry around an extra 5 lbs, I would recommend going with a lens like the Tamron 50-400mm or smaller.
#1 Tamron 50-400mm
The Tamron 50-400mm is in the same class as the Sony 200-600mm, but it’s about half the weight at around 2.91 lbs or 3.1 lbs with the a6700.
The Tamron 50-400 is truly a unique lens for this focal length, because it becomes a 75-600mm focal length with the 1.5x crop factor on aps-c. It can also be used on full frame bodies and it’s the lightest camera in the 100-400mm range.
If you still need a wider lens, you create a stitched image by taking a group of photos and merging them later in photoshop.
- 70mm f5
- 100mm f5.6
- 200-400mm f6.3
#2 Sony 75-350mm
If you don’t need the reach of the Tamron 50-400, or you need something smaller and lighter, I would highly recommend the Sony 75-350 4.5-6.3. The Sony 75-350 weighs 1.37 lbs which is half the weight as the 50-400mm.
This lens will be much easier to use for travel and can also be used for sports, wildlife, and landscapes. Also also less expensive than the Tamron 50-400mm.
#3 Tamron 18-300mm
If you need both wide and telephoto, the Tamron 18-300 3.5-6.3 is a reasonable option. These lenses aren’t easy to build, and you will notice slightly less sharpness and more distortion than the previous two lenses. But having the full frame equivalent focal range of 24-400mm makes this lens pretty incredible.
I think it’s best suited for travel and landscape photographers, or anyone on a budget.
Should you get a teleconverter
The only Sony lenses that can be used with a teleconverter include the Sony 100-400 GM, 200-600 G, 70-200 2.8 GM, and 70-200 f4 GM ii.
I would not recommend using the 2x teleconverter if you’re looking for the best image quality. The 1.5x extender is slightly sharper.
I would also not recommend a teleconverter with older lenses due to the poor autofocus performance, unless you’re mostly shooting stills. The only lenses with great autofocus with a teleconverter are the newer Sony 70-200 2.8 GM ii and the Sony 70-200 F4 G ii.
Hopefully that clears up any questions.
Why the a6700 is the best camera for most people
Recently I published a video on why I think the a6700 is the best camera to buy right now, and I still think that rings true for most people. It has the same AF performance as more expensive cameras like the A7RV, and I love the size and ergonomics.
There’s also more lenses to choose than any other mirrorless camera manufacturer, and it’s relatively affordable.
For most people who need a telephoto lens for wildlife, sports, or travel, the Sony 70-350 is a great lens, but if you need the extra reach I would go for the Tamron 50-400.
It’s lightweight, sharp, works with full frame bodies, and it has similar AF performance as any other Sony lens.
And if you need a larger maximum aperture, I would just go with the new Sony 70-200 2.8 GM ii with the optional 1.5x extender.
I hope this information was helpful. Feel free to see what I’m doing on my Youtube channel or subscribe for more photo news.