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FORUMS Photography Talk by Genre General Photography Talk 
Thread started 08 Nov 2018 (Thursday) 07:42
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Shortening a lens hood?

 
birder_herper
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Nov 08, 2018 07:42 |  #1

I am curious if anyone has altered an OEM lens hood to make it shorter. I have an extra ET-155 lens hood (fits 400/2.8 and 800/5.6) and would like to shave a few inches off the length as I often don't want all the extra length.

Anyone know of any party that would undertake this project? I once owned a 300/2.8 and I purchased a short lens hood that had been beautifully altered. Would love one for my current lens, however.

Thanks for any thoughts!




  
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Audii-Dudii
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Nov 08, 2018 08:29 |  #2

I use adapted lenses and in-camera movements with most of my photography and OEM lens hoods often restrict the size of the image circle projected by the lenses, so I have shortened quite a few of them over the years.

Most recently, I shortened the OEM hood for the Sigma Art 14-35/f2 zoom to remove the petals -- see the photo below -- and if you're even slightly handy, it's not very difficult at all.


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Plastic hoods are easy to work with than metal hoods, but the principles are the same for both: Carefully wrap a strip of masking tape around the lens to indicate the desired cut line, then use a hacksaw to cut very close to (but not right against) the tape. This is because you'll want to leave yourself some room to sand the material smooth without shortening it too much.

Of course, you'll have to figure out a way to clamp the hood against the work surface or, worst case, get someone to hold it for you and I recommend cutting it only partially through and rotating it several times rather than cutting it all the way through in one position.

Once that's done, you sand the rough edge smooth, either by rubbing the cut edge in a figure-eight pattern on a piece of sandpaper that's held flat against a piece of glass or another flat surface, rotating the hood in you hand occasionally so you sand it evenly. (Or if you have access to one, a bench-mounted disc sander works well for this, too, but go slowly because it can remove material very quickly.)

Start the sanding process using a fairly aggressive grit -- say, 80 or 100 -- to do most of the smoothing, then use a couple of progressively finer grits -- 220 to 400 then, say, a few final passes with 600 to 800 -- to make it as smooth to the touch as you wish.

Finally, use a small piece of sandpaper in your fingers to rub around the sides of the cut edge to smooth those over as well. If the hood is plastic, then you're done, but if it's metal, you may wish to paint the exposed edge or at least run a Sharpie around it a few times to make it black.

That said, though, the fact that you felt the need to ask this question does suggest that maybe you're not the DIY type -- no offense intended! -- in which case, you might ask a local machine shop to tackle it for you (pretty much any place should be able to do it, including even a general automotive machine shop) or send it to S.K. Grimes -- http://skgrimes.com/ (external link) -- or another camera machinist and have them do it for you.

Good luck!



  
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birder_herper
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Nov 08, 2018 10:49 as a reply to  @ Audii-Dudii's post |  #3

No offense taken! Indeed, I am not very handy and your thoughtful and detailed response is highly appreciated! I think I'm going to take my time and learn as much as I can before setting out on this project so I don't screw things up!




  
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itsallart
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Nov 08, 2018 11:06 |  #4

There are collapsible rubber lens hoods on the market, too. Pretty handy stuff. Google the correct diameter and see what happens.


Renata
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eddieb1
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Nov 08, 2018 11:28 |  #5

itsallart wrote in post #18746594 (external link)
There are collapsible rubber lens hoods on the market, too. Pretty handy stuff. Google the correct diameter and see what happens.

And they’re cheap too.




  
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AZGeorge
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Nov 11, 2018 11:47 |  #6

Audii-Dudii wrote in post #18746522 (external link)
I use adapted lenses and in-camera movements with most of my photography and OEM lens hoods often restrict the size of the image circle projected by the lenses, so I have shortened quite a few of them over the years.

Most recently, I shortened the OEM hood for the Sigma Art 14-35/f2 zoom to remove the petals -- see the photo below -- and if you're even slightly handy, it's not very difficult at all

(detailed instructions).

Good luck!

This is a great post in so many ways. It evokes the helpfulness, humor and can-do spirit that enhances life.

Chances of me ever shortening a hood very closely approximate zero, but it's a great reminder of more important stuff.


George
Democracy Dies in Darkness

  
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steveglass
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Dec 01, 2018 13:01 |  #7

https://www.bhphotovid​eo.com …A001_Flex_Lens_​Shade.html (external link)

something like that might do you.


http://www.steveglassp​hotographer.com/ (external link)

  
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Shortening a lens hood?
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