Canon HG10 and 2x telephoto lens Question at DVinfo.net

Brian W. Smith · May 25th, 2008, 09:32 PM

Not sure if I can phrase this technically correct.. or explain it clearly..

but..

If I slap on the Canon 2x telephoto lens, and given my unsteady hands -

say I'm at 10x optical zoom w/o teleconverter.. if I put on the 2x converter - and all things being equal - will my shaky hand cause the same or more disorder in the video with the 2x?

If so, can I estimate that the shakiness w/ converter (10x on HG10 and 2x converter) = 20x optical zoom shakiness w/o the converter? (Do I effectively just multiply the #s?)

Or is 10+2x converter = same amount of shakiness I'd get at 10x?

Stephen Eastwood · May 25th, 2008, 11:02 PM

you effectively double it if you are at the full 10x plus 2x, since you are seeing the field of view of a 20x lens, magnified that much. So its very shaky, and for best results, it needs a very good solid tripod even as light as it is.

Dave Blackhurst · May 25th, 2008, 11:57 PM

Think of it this way - as you increase the multiplier, the smaller the area your "frame" will be covering, and any movement will be amplified - the same amount of movement will APPEAR much larger, because the "target" will bounce around more in the frame.

This is one of the reasons that mounting a WA lens and getting close in with a steadicam type shot will make the footage look smoother. Take a good look at a lot of the "steadicam wannabe" footage - you'll see lots of barrelling in many of the demos, indicating the WA is doing a lot of the "apparent" stabilization!

If you can't get close to your subject and fill your frame at a low zoom, plan on a tripod... EIS/OIS can only compensate so much.

Brian W. Smith · May 26th, 2008, 06:20 AM

Quote:

Originally Posted by Dave Blackhurst

If you can't get close to your subject and fill your frame at a low zoom, plan on a tripod... EIS/OIS can only compensate so much.

Thanks Dave and Steve for clearing that up.

May 25th, 2008, 09:32 PM	#1
Brian W. Smith Regular Crew Join Date: Dec 2007 Location: Washington, DC Posts: 66	Canon HG10 and 2x telephoto lens Question Not sure if I can phrase this technically correct.. or explain it clearly.. but.. If I slap on the Canon 2x telephoto lens, and given my unsteady hands - say I'm at 10x optical zoom w/o teleconverter.. if I put on the 2x converter - and all things being equal - will my shaky hand cause the same or more disorder in the video with the 2x? If so, can I estimate that the shakiness w/ converter (10x on HG10 and 2x converter) = 20x optical zoom shakiness w/o the converter? (Do I effectively just multiply the #s?) Or is 10+2x converter = same amount of shakiness I'd get at 10x?

May 25th, 2008, 11:02 PM	#2
Stephen Eastwood Major Player Join Date: Jun 2007 Location: Great Neck, NY Posts: 291	you effectively double it if you are at the full 10x plus 2x, since you are seeing the field of view of a 20x lens, magnified that much. So its very shaky, and for best results, it needs a very good solid tripod even as light as it is. __________________ Stephen Eastwood http://www.StephenEastwood.com

May 25th, 2008, 11:57 PM	#3
Dave Blackhurst Inner Circle Join Date: Feb 2007 Location: Apple Valley CA Posts: 4,874	Think of it this way - as you increase the multiplier, the smaller the area your "frame" will be covering, and any movement will be amplified - the same amount of movement will APPEAR much larger, because the "target" will bounce around more in the frame. This is one of the reasons that mounting a WA lens and getting close in with a steadicam type shot will make the footage look smoother. Take a good look at a lot of the "steadicam wannabe" footage - you'll see lots of barrelling in many of the demos, indicating the WA is doing a lot of the "apparent" stabilization! If you can't get close to your subject and fill your frame at a low zoom, plan on a tripod... EIS/OIS can only compensate so much.