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Hey! This thing is still a Work in Progress. Files, instructions, and other stuff might change!
bummster

Parametric & Customizable dSLR Camera Lens Hood Creator

by bummster May 1, 2018
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Hi there very great project...unfortuantely I don't have a clue about OpenSCAD... maybe someone could help me. I'm trying to create a lenshood for the Sigma 500/4.5HSM, the standard Sigma Bayonett data will not work as it is a clamp system. The lens is great on a budget, but it lacks of massive flares with the much too short designed original barrel hood. I have a tronxy X5S with 330x330x400 build space, I thought it might be a good idea to print one fiiiting on it. I have a PDF file for a paper lenshood, any chance to mesh things up? THX

Hi There, great Project.
I have found a Page with petal hoods as PDF Files.
So You See any chance top use those and Wrap IT to a 3D File?
Especially my Sigma 500/4.5 needs a petal Hood as Kontrast disappears If Sun is anywhere but in your Back...

The AoV on the Sigma 500 f4.5 prime is quite small @ 5degrees on full frame. You could probably slip a 150mm/6in PVC tube that's half a meter long on the end of it and not vignette. Petal cutouts are not required for this particular big boy. If you're instead referring to the "bigma", then yeah you'd definitely need a petal hood.

From the pics I've seen, the Sigma 500 f4.5 hood looks a lot like Canon large prime hoods. It's a big metal tube with no cutouts that's about as long as it is wide, and secured by both a bayonet and a thumb screw. It's an expensive hood for sure, but worth it in my opinion. If you have the Sigma hood and you're flaring in sun, you definitely could make the hood longer with a DIY extension of some kind. You could use the friction fit option of my customizer to make it.

I would Like to have a petal Style Hood...one reason i bought the Trinxy X5S with 333340 Print size...
The Lens Hood provided with the Lens ist way too short.

Cool. As long as you understand that the petal cutouts are totally unnecessary for this lens, though they do look good.

I'll probably need some dimensions off of that lens though. Looks like Sigma went with a triple tab bayonet for that lens. I've got a Sigma EX 70-200 F2.8, but the bayonet on that is two tab. Could you tell me at what angles those tabs begin and end?

Will this work with a canon 18-55mm lens And will it work with a canon 18-200mm? If i scaled the size up?

Interesting... The 18-55mm ef-s Canon lenses have a triple tab bayonet mount on it. For now, my file wont work.

The Canon mount i modeled is for lenses that have 2 tabs. Thats what my 3 Canon lenses use.

The 18-200mm ef-s lense appears to have the 2 tab mount. It "should" work for this lens.

But, of course, id do a quick test print of just the mount to make sure.