It's IR so doesn't have a long range and the further you are away from the camera the better your aim has to be. About 10 feet is about the absolute maximum.

Sold ... to meeeeeee
Can't wait for Mt Tiede in April.

Why now when I haven't the money
No No No just the sound needed

Remember to upgrade the firmware and enjoy

Impressive

Before you buy try LensMaster, small British company, great product, great service, great pricing. I bought one recently for a SMC Pentax 500mm f4.5 and it is very good indeed. Checkout their reviews on the birding forums.

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What about the Sigma 8-16? It's not fish eye either

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I have to take you to task on that remark K, I find it excellent for 'action'
check here
I exclusively use the DA*50-135 and DA*300 for the karting shots and although I don't nail the focus on them all I certainly get enough to fulfill my needs and the needs of the drivers at the track. I had the Sigma 70-200 too but sold it because it wasn't getting used. The pixie dust Pentax sprinkle on these lenses set them apart

£3K..... I would make a bee line for SRS and grab the DA560 HD in a heartbeat