Lens hood: Re-coat advice please

baachitraka · Oct 9, 2014

Bought a lens hood for Zuiko 28mm f/3.5 lens and found it is bit shiny inside and may need a re-coat of non-reflecting paint.

Any recommendations?

jochen · Oct 9, 2014

Hello,
here in Germany you could buy "Schultafellack, schwarz", but unfortunately only in rather large cans (500 ml ?) Or you can use the tiny 15 ml Revell enamels for plastic models, in matte black, you can get it in toy shops.

baachitraka · Oct 9, 2014

I will try with Revel enamel. Thanks.

ruby.monkey · Oct 9, 2014

Otherwise try lining it with adhesive-backed felt.

AgX · Oct 9, 2014

Tetenal once sold a mat enamel for such purposes.

Or you can try mixing yourself with pigments (graphite). But I know mat optical enamals I guess are at average more reflective than standard black surfaces that still got some shine.

baachitraka · Oct 9, 2014

selbstklebender filzstoff, may do the job I guess but I need to find one this is less than a millimeter.

Dan Fromm · Oct 9, 2014

Flocked paper from Edmund Industrial Optics. I prefer double-sided adhesive tape to adhesive backed paper, makes positioning the paper easier.

If you must use paint, Krylon Ultra Flat Black.

summicron1 · Oct 9, 2014

baachitraka said:
Bought a lens hood for Zuiko 28mm f/3.5 lens and found it is bit shiny inside and may need a re-coat of non-reflecting paint.

Any recommendations?

i bought a can of flat black auto spray paint at the parts store -- look for the deadest flat black they have -- i have a can of krylon camouflage ultra-flat black. Spray it on something and nothing comes out, it's like a black hole. I used it to spray the insides of my Holga and Sputnik (russian stereo) cameras which, for unknown reasons, are made from shiny black plastic, and their performance vastly improved.

BrianShaw · Oct 9, 2014

If using paint, don't forget the importance of properly prepping (and, maybe, priming) the surface. Krylon ultra flat is good stuff, BTW.

nsurit · Oct 9, 2014

I'm betting Krylon flat black would do the trick. This is a pretty common lens/lenshood. You could probably find a replacement Olympus hood for what you would pay for the can of paint. Yes, I know some folks (like me) might rather fix it than replace it. Bill Barber

baachitraka · Oct 9, 2014

I have found something similar,

http://www.amazon.de/NIGRIN-74112-Lackspray-schwarz-matt/dp/B001B4X16Y/ref=cm_cr_pr_product_top

AgX · Oct 9, 2014

General multi-purpose mat paints are typically not that mat at all.
Those optical paints typically are very scratch sensitive, als dullness was first goal not surface hardness/beauty.

Xmas · Oct 9, 2014

If you get paint don't use it on hood until you try it on a test surface!
The oldy worlde black board paint I use is only matt if
you add a lot of thinners.
A sharpie touch up over any bright spots is simple and looks more original.
Or buy a rubber OM hood normally they did both a rubber and an all metal hood in each size.

mopar_guy · Oct 10, 2014

Xmas said:
If you get paint don't use it on hood until you try it on a test surface!
The oldy worlde black board paint I use is only matt if
you add a lot of thinners.
A sharpie touch up over any bright spots is simple and looks more original.
Or buy a rubber OM hood normally they did both a rubber and an all metal hood in each size.

The hoods supplied for the 28mm f3.5 Zuiko were metal. The 28mm f3.5 Zuiko was discontinued and the replacement was the 28mm f2.8 Zuiko which was supplied with a rubber hood. As far as I know, the two hoods can be used on either lens.

Arklatexian · Oct 11, 2014

Don't forget a model train shop when you need small quantities of flat black paint. Here in the USA, they call the color locomotive black. Kodak once made such a paint for photographers and it was perfect for the job, but I haven't seen any in years....Regards!

David A. Goldfarb · Oct 11, 2014

I'll second Dan Fromm's recommendation of black flocked paper, sold by companies like Edmund Scientific mainly for telescope enthusiasts. I've used it inside several solid metal lens hoods, inside some lens barrels, and I've got it lining the walls around my enlarger. It comes in an adhesive variety and non-adhesive, which you can apply with contact cement like Pliobond.

Poisson Du Jour · Oct 11, 2014

Flat black (but not pot belly black — for repainting those stoves) spray paint, x 2 coats.
Nothing else. But ensure there is absolutely no dust where you are spraying or where the hood(s) is being dried.

Xmas · Oct 11, 2014

mopar_guy said:
The hoods supplied for the 28mm f3.5 Zuiko were metal. The 28mm f3.5 Zuiko was discontinued and the replacement was the 28mm f2.8 Zuiko which was supplied with a rubber hood. As far as I know, the two hoods can be used on either lens.

yes and no I've got a:

metal marked /3.5
rubber marked /3.5 /2.8 ie both
rubber marked /2.8

they are all the same profile apart from type marking

baachitraka · Oct 13, 2014

ruby.monkey said:
Otherwise try lining it with adhesive-backed felt.

May I know the thickness of the felt, the minimum I find here is 0.5mm thick.

Ken Nadvornick · Oct 13, 2014

Dan Fromm said:
If you must use paint, Krylon Ultra Flat Black.

From experience, I agree in general.

For APUG background information, be aware that Krylon reformulated this particular paint several years ago. My understanding is that was done for environmental reasons, but I don't know that for a fact. One side effect is that the newer formula is much less delicate than the old. But the older formula is noticeably less reflective than the newer. The older is blacker. I was told the older formula was also used by amateur telescope builders where flocking was not feasible, but again, I don't know if that's true or not.

I discovered the difference when I unknowingly purchased a can of the newer stuff while refurbishing my Calumet C1 8x10. I was repainting the interior sides of film backs and lens boards. A test spray looked distinctly more reflective, and a visit to the Krylon website confirmed the change, but not the reason. Packaging was also redesigned. The older formula came in spray cans with vertically cylindrical black caps. The newer formula has rounded caps.

At that point I made a "distress" purchase of all of the remaining old formula cans I could find. The usual lifetime supply for these situations. They now live in a box in the back of a closet. Glad I did, too. When Calumet went under I got hold of a surplus of 10 6x6 C1 blank lens boards. Another "distress" lifetime supply purchase. So now I will be able to repaint the interior sides of these as I drill them using the older formula paint.

Ken

AgX · Oct 14, 2014

Very interesting, Ken.

AgX · Oct 14, 2014

AgX said:
Tetenal once sold a mat enamel for such purposes.

Now available in spray-cans. Though I do not know whether it is the same as the old one in bottles for use with brushes.

The descriptions seems promising:

http://www.tetenal.de/opener1.htm?file=imaging_shop/images/105202.pdf

baachitraka · Oct 14, 2014

Thanks. Calumet selling it for Euro 15.

baachitraka · Oct 16, 2014

I have placed an order in Calumet, lets see.

Lens hood: Re-coat advice please

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