Vignetting with 20x zoom
 

I just wondering why does the picture vignetting if i zoom fully in.
Lens hood is on the cam.
The effect is very visible on pc/projector (outside the safe area), but it can be seen also on the TV (in the safe area).

Is this normal?

Perhaps the hood (or filter) gets in the way?

Ghosts of Hungary - -OOOooooo .. . . scary ! ! !
 

Nope . .not here, Standard and WD58H hoods on. You got any other stuff bolted on? Mics or floppy furries . . or loose women!!

The last one sounds good.

Yes, it is the hood, because i don't have any filter, mic, etc.
just pure xm2.

i just wondering

Prech, you sure it was the "standard" Canon hood that came with it .. ? We've been here before with "standard" - yeah? Can you share a picture of the hood you're having problems with?

No vinigretteables here . .

G

I have the GL1, and have never noticed anything similar. In fact, the only problem I have had with the zoom, is the digital end seems to degrade the picture quality. I am looking to get a telephoto lens to extend it's range without using the digital zoom.

Is there such a thing as a wide angle telephoto lens adapter? For the GL1?

Nope. It's either a tele or a wide.

This is normal for certain iris settings. It's known as edge fall-off and it's a common characteristic for all lenses. I, too, was alarmed when I discovered this when the GL2 was first introduced.

Here is a dv avi file, that show vignetting with original canon lens hood:

http://web.axelero.hu/prechj/pics/vignetting.avi

(6mb)

you can see, the effect is harder as i zoom in.

Prech

Ken is correct. This is one of the effects of putting a 20x zoom lens into a very small package. The effect shown in your clip is exactly that detailed in a very active discussion here from last year. (even the off-centered quality of the vignetting is pretty well documented). So there is nothing specifically wrong with YOUR camera, its just a limitation of the lens design that canon is using....oh, to have a $10,000 zoom on our $2000 cameras, that'd be nice huh?---You've exacerbated the issue by including a low detail, neutral sky in your frame...this will show inconsistencies like this more than a detailed, higher contrast shot.

You can minimize this effect by shooting with an aperture of f5.6 - f8, and by eliminating any gain (manual, or automatic) being applied to the image. Also shooting close-ups of zebras wouldn't hurt.


Barry