I designed and 3d printed my lens hood

[Tiago C]

This is not the most popular time for lens hoods (thanks, Steve ) but here it goes.

I designed and printed this lens hood for my use. A fun home project intersecting various interests.
When compared with the original hood, this one is better at blocking stray light, is smaller, and has an integrated cap.

The compact size of the hood means I am less inclined to detach it for storage.

The integrated cap makes it quicker and easier to protect the lens when it’s not in use.
It’s also harder to lose and is one less accessory to keep in my pocket.
I also like that the cap sits further away from the front lens element.
Little magnets keep the cap steady when it’s flipped.

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[Icarus]

Really cool. Wonder if birds notice it as much with it not being a big round eye looking at them.

 

[abc123brian]

It is an interesting design. Do you get any vignetting at the short end?

 

[frdjohns]

I have a 3D printed lens hood for my Nikon 600 FL. It is about half the length of the original, so it does not catch the wind as much and is easier to manuever when shooting from a vehicle.

 

[Tiago C]

It is an interesting design. Do you get any vignetting at the short end?

Thank you. I designed it so it wouldn’t get any vignetting from 200mm. I rarely use the lens at 100m. I haven't done much testing at 100mm but from what I could see, any vignetting at that focal length is minimal.

 

[Tiago C]

A video and a few more images:

Click to open video

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[Patrick M]

it looks like a very small opening. Does it affect the image at all?

 

[Wes Peterson]

Theres no way covering that much of your front element isnt effecting image quality. Try posting 2 shots one with it on one without, same settings and try to include foreground and background blur. Im willing to bet its a full stop under exposed and the bokeh has an odd texture.

 

[sid_19911991]

This is not the most popular time for lens hoods (thanks, Steve ) but here it goes.

I designed and printed this lens hood for my use. A fun home project intersecting various interests.
When compared with the original hood, this one is better at blocking stray light, is smaller, and has an integrated cap.

The compact size of the hood means I am less inclined to detach it for storage.

The integrated cap makes it quicker and easier to protect the lens when it’s not in use.
It’s also harder to lose and is one less accessory to keep in my pocket.
I also like that the cap sits further away from the front lens element.
Little magnets keep the cap steady when it’s flipped.

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Cool stuff

 

[aolander]

Nice job on the hood, but I can't see how that wouldn't vignette like crazy.

 

[Whiskeyman]

Nice job on the hood, but I can't see how that wouldn't vignette like crazy.

Maybe a full frame lens mounted on a cropped sensor body?

 

[Dick Blystone]

really cool! nice work.

 

[jer]

@Tiago Cardoso GOOD GRIEF, Man! You're an inventor! Now work on a lens and camera to connect to your hood and soon we'll all be in line to purchase the Cardoso-9. Good job, Tiago, and, I'm kidding of course. Still, we can always dream...

 

[Roy]

This is not the most popular time for lens hoods (thanks, Steve ) but here it goes.

I designed and printed this lens hood for my use. A fun home project intersecting various interests.
When compared with the original hood, this one is better at blocking stray light, is smaller, and has an integrated cap.

The compact size of the hood means I am less inclined to detach it for storage.

The integrated cap makes it quicker and easier to protect the lens when it’s not in use.
It’s also harder to lose and is one less accessory to keep in my pocket.
I also like that the cap sits further away from the front lens element.
Little magnets keep the cap steady when it’s flipped.

View attachment 32573
View attachment 32574
View attachment 32576View attachment 32587

View attachment 32578

Is there much of a problem with vignetting ?

 

[Tiago C]

Thanks for all the comments.

I can confirm that there seems to be some light loss (not as much as you thought, @Wes Peterson ), even across the image.
Clearly I missed some fundamentals of optical design but I am adjusting my parametric 3D model to increase the opening and hope to reprint soon.

It might not be the perfect shape but I think it demonstrates some opportunities with 3D printing. I'm quite happy about the hinged cap.
I will post images of the reprinted design once I have it.

Thanks

 

[RichF]

Thanks for all the comments.

I can confirm that there seems to be some light loss (not as much as you thought, @Wes Peterson ), even across the image.
Clearly I missed some fundamentals of optical design but I am adjusting my parametric 3D model to increase the opening and hope to reprint soon.

It might not be the perfect shape but I think it demonstrates some opportunities with 3D printing. I'm quite happy about the hinged cap.
I will post images of the reprinted design once I have it.

Thanks

good luck with version 2

 

[zemlin]

On prime lenses projecting the FOV from the maximum diameter of the objective element works well. Zoom lenses are trickier because the size of the field varies with focal length. The field is smaller at the objective element for shorter focal lengths. I think most of the zooms I've worked with have been constant aperture. Don't think I've tested a variable aperture lens but I will be soon.

To measure the limit of the hood to ensure no vignetting I made a gauge that mounts on the end of the lens with a flag I can pivot in. A protractor mounted on top allows me to draw the limit point in the CAD model to confirm I'm clearing the field. The center bits change out as those will be different for each lens.

I don't have a photo of it mounted on a lens, but i posted a video clip on IG. Click right to see it on the lens.

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[MorganP]

I like the rare earth magnet to keep the flap open. Are you using magnet on both sides or magnet and steel? Solidworks? How did you determine the size of the rectangle?.

 

[Roy]

Thanks for all the comments.

I can confirm that there seems to be some light loss (not as much as you thought, @Wes Peterson ), even across the image.
Clearly I missed some fundamentals of optical design but I am adjusting my parametric 3D model to increase the opening and hope to reprint soon.

It might not be the perfect shape but I think it demonstrates some opportunities with 3D printing. I'm quite happy about the hinged cap.
I will post images of the reprinted design once I have it.

Thanks

3D printing is a godsend to photography.
There is a website that may help the design - they provide free printable hoods - http://www.lenshoods.co.uk/