Shaved petals on a fisheye

Has anyone ever done it? I am considering it on my tokina 10-17mm fish for a specific reason that has nothing to do with focal length advantage.

Do you actually shave it? or do you dissemble it off? Does it degrade the IQ alot?

thanks

If you're talking about shaving the petals on the lens hood, no. I can't think of any good reason to do that...

mikeassk wrote in post #9945949
Has anyone ever done it? I am considering it on my tokina 10-17mm fish for a specific reason that has nothing to do with focal length advantage.

Do you actually shave it? or do you dissemble it off? Does it degrade the IQ alot?

thanks

Maybe if you told us what this reason was, we could better advise you?

The only reasonable reason to consider it is because you want to use it on a 1.3x or FF sensor and the hood will show in the pics. I personally have not done it but have seen somewhere on the vast internet where someone has. On a FF the the hood would show at 14mm and maybe 15mm or maybe 13 and 14 so you do get a bit more length. However you will significantly depreciate the value of the lens by probably half. I can't recall if you were the one mentioning using it on 1.3 or FF but I would advise you to sell it for the Canon or the Sigma 15mm. The 15mm fisheyes still have a mild distortion on a crop and are wonderful on a FF. Oh, and it's 2,8 which does help at MFD to obscure the background.

JWright wrote in post #9946500
If you're talking about shaving the petals on the lens hood, no. I can't think of any good reason to do that...

GavinTing wrote in post #9946560
Maybe if you told us what this reason was, we could better advise you?

I shoot with a dome port in water. My Canon 15mm Domed acrylic port works great for my Canon 15mm fish but not at all for my tokina 10-17mm fish which is about 1/3 inch longer overall, about the length difference being the petals.

I would love to be able to have my mark III fit the 15 and the tokina in the same port as the ports are expensive and bulky to travel with. I use both the lenses frequently and do not wish to get rid of either.

The canon is sharper yet useless on my 20D and soon 7D and the Tokina is great for the 1DIII but not full frame which I use often.


All that being said I am still unsure about how to shave a built in hood,

anyone?

emitecaps wrote in post #9947240
The only reasonable reason to consider it is because you want to use it on a 1.3x or FF sensor and the hood will show in the pics. I personally have not done it but have seen somewhere on the vast internet where someone has. On a FF the the hood would show at 14mm and maybe 15mm or maybe 13 and 14 so you do get a bit more length. However you will significantly depreciate the value of the lens by probably half. I can't recall if you were the one mentioning using it on 1.3 or FF but I would advise you to sell it for the Canon or the Sigma 15mm. The 15mm fisheyes still have a mild distortion on a crop and are wonderful on a FF. Oh, and it's 2,8 which does help at MFD to obscure the background.

Thanks, but I own 2 fisheyes (the 15mm Canon included {The best and sharpest by the way}) and have access to others, (Nikon 10.5/Nikon 16mm ect..)

My plight has nothing to do with focal length as the Tokina has the ability to shoot at 12mm on a 1DIII and 14mm on a 5D/1Ds ect.

I am trying to minimize its size a bit.

mikeassk wrote in post #9947308
Thanks, but I own 2 fisheyes (the 15mm Canon included {The best and sharpest by the way}) and have access to others, (Nikon 10.5/Nikon 16mm ect..)

My plight has nothing to do with focal length as the Tokina has the ability to shoot at 12mm on a 1DIII and 14mm on a 5D/1Ds ect.

I am trying to minimize its size a bit.

Well, in that case I wouldn't do it. Of the one lens that I saw that had the petals removed the person boldly did it with the lens intact and used a dremel tool to do it.

mikeassk wrote in post #9947287
I shoot with a dome port in water. My Canon 15mm Domed acrylic port works great for my Canon 15mm fish but not at all for my tokina 10-17mm fish which is about 1/3 inch longer overall, about the length difference being the petals.

I would love to be able to have my mark III fit the 15 and the tokina in the same port as the ports are expensive and bulky to travel with. I use both the lenses frequently and do not wish to get rid of either.

The canon is sharper yet useless on my 20D and soon 7D and the Tokina is great for the 1DIII but not full frame which I use often.


All that being said I am still unsure about how to shave a built in hood,

anyone?

Makes sense to me now.

If you're trying to shorten the hood, then I'd take a small file to it and take the material off a little at a time. Position the lens so the filings fall away from the lens and not into it. You could also place a piece of sandpaper on a flat surface and "sand" the petals of the lens on it. This way, the material would be removed from the petals evenly. You just need to be very careful of the front element of the lens...