The annoying vignetting of lens hood.

[cyracles]

Thanks everyone. The canon-made lens hood is not available at this end.

[dan marchant]

Thank you Lex. Which part of it should I file off precisely?

Go to the website Lex provided a link to and get a template for a cardboard lens hood. Compare that template to your existing problematic hood and you should be able to see which bits need to be filed off.

[Glenn NK]

Filter, check. Lens hood, check.....er, no...not yet. No matter how I screw it on, it shows some part in the frame when I zoom out below 24mm.

Note: it is not canon-made(those are really scarce), it is the petal type(that's the only available one).

. . . .or is there a way to make the lens hood conform better?

1) It's almost certainly the wrong hood for the lens; Canon hoods aren't so much scarce as they are expensive. I use the 24-105 hood on my 17-55 Canon zoom; the real thing is very expensive.

2) On some lenses, a thick filter, or two stacked filters will cause the hood and/or the filter to vignette - it's happened to me with the correct genuine Canon hood (in this case caused by the extra filter). But the vignetting only occurs at the very widest FL, not as severely as what you've reported (which is why it's obviously not the correct hood).

3) I won't get into the debate of hood vs no hood, but will say I rarely if ever shoot without the hood (the exception being the 24TSE which is only effective when shooting in the 180 degree range away away from the sun (the hood is useless otherwise).

4) The hood can be filed down; with the camera firmly mounted on a tripod, zoom out (longer FL), then decrease FL and watch where the vignetting starts. Remove a bit of hood, and keep repeating.

Glenn

PS - just read Dan Marchant's post - very good advice.

[rpcrowe]

I agree with Mike Buckley... I always use a lens hood both indoors and out.

I once fell down crossing a street and my 70-200mm f/4L IS lens hit the pavement lens hood first, propelled by my 200+ pounds of weight! The hood was destroyed but the lens was not scratched. I was using a round screw-in generic lens hood...

[rpcrowe]

Andrew wrote: "Sorry, you can ignore this post."

Not necessarily, my Chinese knock off lens hood for my 17-55mm f/2.8 IS lens has the Canon designated number EW-83J printed in white on the hood. It doesn't however have the words "Canon" or "Japan"

That knock-off bayonet hood works just fine with absolutely no vignetting. However I once tried a screw-in Opteka petal lens hood and that did not even screw in correctly...