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Related Questions and Answers

Q: 1. Does this lens have internal focusing or does the lens barrel extend ?

A: It has internal focusing. The barrel only extends if you are zooming out.

Q: 2. will this lens make the 200-400 lens less desirable? I realize there is a huge difference in weight, size and price but not in focal length or f-stop. So, what is the huge difference in quality that counsels in favor of the extra weight, length, and price? thx.

A: The 100-400vii has excellent image quality and solid build quality. The portability compared to the much larger and heavier 200-400 makes it the wise choice for most users. But the 200-400 with 1.4x built-in extender makes the lens a 560mm f5.6 lens at the long-end, compared to the 100-400 at 400mm f5.6. The 200-400 image quality and build quality is equal to the very best prime lens, surpassing any other zoom lens on the market.

Q: 3. Is this lens compatible with DCM G1?

A: Yes Panasonic Lumix G Vario 100-300mm f/4-5.6 II POWER O.I.S. Lens is compatible with Panasonic Lumix DMC-G1

Q: 4. Is anyone using this lens for wildlife and/or birds?

A: I am a birder and use this lens with my Panasonic micro four-thirds camera! Great clarity and sharp image. Lightweight as well. This is my second round of Panasonic micro four-thirds camera and lenses. Camera has enough options for ISO that this lens works most of the time. It is not a low light lens but still pretty versatile.

Q: 5. Will the tripod collar work with a Feisol QP-144750 Release Plate?

A: I don't know.

Q: 6. Does the tripod collar come off?

A: The tripod foot comes off (I replaced mine with one from Really Right Stuff) but the ring that the foot attaches to does not come off.

Q: 7. will I lose any functionality/performance if I use the new 100-400 on the old 7D?

A: No. You will gain performance.

Q: 8. Can the canon extender EF 2x II (2x) work with the Canon EF 100-400mm F/4.5-5.6L IS II USM lens?

A: Yes you can use the Canon Extender EF 2X II teleconverter with the Canon EF 100-400mm F4.5-5.6L IS II USM however, most cameras that you use this combination on will not be able to autofocus.

Q: 9. How well does this lens work with shooting video? That is i want to also purchase the new 1Dx2 to use mainly for video production. Should i buy this telephoto or is there a better lens for video use? Thanks

A: I have used this for video - long range // I use the 70-200 more often

Q: 10. I have a friend with a Nikon 810. She would like to use the new 100-400 on her Nikon. Is there an adapter she can buy to do this? And if so, do you know its name and model?

A: There may be an adapter but it will not allow focus to infinity. Nikon SLRs have a deeper body with greater distance from lens mount to image sensor. This allows Nikon lenses to be mounted on Canon cameras and retain full focus range but not the other way around. Of course, even if the lens could be mounted, image stabilization, auto focus, etc would be lost.