[ShutterKatt]

I think all the Power Zoom lenses made by Pentax have been discontinued, right? So are there any other Power Zoom type lenses made by other manufactures nowadays ?

[Adam]

I think all the Power Zoom lenses made by Pentax have been discontinued, right? So are there any other Power Zoom type lenses made by other manufactures nowadays ?

Yes, they're all discontinued, and no, nobody else makes them. I think people realized how pointless of a feature it was since in most cases it's faster to focus manually.

With that said, I wouldn't object to Q mount lenses having power zoom for single-handed/video use

[DSims]

The Nikon 1 has a single power-zoom lens available. I just learned this a couple of days ago, since I'm playing with and researching lenses for a Nikon 1 S1 right now (though I don't have this lens): http://www.amazon.com/Nikon-NIKKOR-10-100mm-4-5-5-6-Black/dp/B005NFW99W/ref=...Nikon+1+10-100

It's said to be most useful for video.

[JohntheThird]

Although the manual power zoom may be useless, I really like the auto-zoom possibilities related to focus distance.

This feature allowed an object that was moving closer or further away to be kept in the same frame.

I think it is a simple electronic adjustment, that could easily be implemented in modern cameras.

[Lowell Goudge]

Although the manual power zoom may be useless, I really like the auto-zoom possibilities related to focus distance.

This feature allowed an object that was moving closer or further away to be kept in the same frame.

I think it is a simple electronic adjustment, that could easily be implemented in modern cameras.

When the K10 came out, they advertised "support" for power zoom lenses. Sadly, this never appeared.

Image size tracking, and zoom during long exposure are two useful functions I thought should be supported