Metal filter frames ?

Can anyone here knows where can I buy screw metal filter frames without optical glass ? I do not know if this is possible hmmm

Cokin makes "Extension Rings" in various sizes that are exactly what you are looking for:

http://www.bhphotovide​o.com …ing&N=0&Initial​Search=yes

http://www.bhphotovide​o.com …_Extension_Ring​_58mm.html

They are basically a filter with male and female threads and No Glass.

msowsun wrote in post #12938680
Cokin makes "Extension Rings" in various sizes that are exactly what you are looking for:

http://www.bhphotovide​o.com …ing&N=0&Initial​Search=yes

http://www.bhphotovide​o.com …_Extension_Ring​_58mm.html

They are basically a filter with male and female threads and No Glass.

The come in useful for lenses where the front element and filter threads retract when focusing or zooming. I used them with my EF 28-70 3.5-4.5 II and my EF 28-80 3.5-5.6 USM:

Cokin 52mm Extension Ring added to EF 28-70 3.5-4.5 II

These are wonderful! Thank you for sharing them. I had the exact problem this weekend where my adapter ring for my Cokin holder wouldn't attach to the threads on my 18-55.

I had an extension on my old Pentax 135mm to make the lens cap easier to remove, I just made it from the UV filter that came with it by unscrewing the inner ring and removing the glass. So, just get the cheapest filter you can find and do that.

If you have an old filter lying around you could try to remove the glass, but Cokin Extension Rings are only $7.69 so why bother?

Thanks but I know all this already ,Im trying to buy somewhere but I dont know where factory frames without signs because if I buy some realy cheap ready to screw filters is still too expensive ,the cost of this frame must be under 1$ ,I have time and will find them once

Ebay seems cheap enough, plenty of UV filters ranging from 25mm to 72mm (and probably some I missed) for less than £3 ($5).

I've done this a few times.. Not too difficult.

The Ran wrote in post #12940922
Ebay seems cheap enough, plenty of UV filters ranging from 25mm to 72mm (and probably some I missed) for less than £3 ($5).

Another solution.

The Ran wrote in post #12940922
Ebay seems cheap enough, plenty of UV filters ranging from 25mm to 72mm (and probably some I missed) for less than £3 ($5).

Yes it is if you need one or two and if you dont care what is written on them,I need 100 pieces thats difference ,anyway I have found some on alibaba

Just curious, what do you need 100 for?

What's the price on Alibaba? Even at a $1 each that's $100, I'm assuming you don't have 100 lenses so you want to stack them to increase the extension distance in which case it may be more cost effective to pay a machine shop to custom make them from some appropriate sized tubing.

No I dont have 100 lens I have only one ,but I must make 100 filters for some people who want to have one

Oh, now I'm interested. What kind of filters?