48 mm filter diameter?

[gkardmw]

Hey, just a simple question: I recently obtained a box of filters and flash attachments and found several 48 mm filters and a hood. Which system would these be for? I have been searching with no luck so far. Thanks!

 

[Steve Goldstein]

IIRC the Canon 50mm f/1.4 LTM takes 48mm filters.

 

[88E30M50]

IIRC the Canon 50mm f/1.4 LTM takes 48mm filters.

I was going to say that exact lens. I recently was struggling to find a 48mm filter for one that I had picked up.

 

[Paul Howell]

Canon QL 111G rangefinder, well the lens hood may or may not block the rangefinder and view finder windows.

 

[xkaes]

As mentioned, for some reason Canon used it quite a bit. That seems odd, but I've always thought that 49mm and 52mm were odd. Why not 50mm?

 

[Kodachromeguy]

As mentioned, for some reason Canon used it quite a bit. That seems odd, but I've always thought that 49mm and 52mm were odd. Why not 50mm?

Canon also used a unique filter diameter for their 50mm ƒ/1.8 LTM lens (the black mid-1960s version): 40mm. They could have easily used 40.5mm, common on many German and Soviet lenses. Could it have been to sell 40mm and 48mm filters?

 

[dynachrome]

The 50mm f/1.8 Canon FL lenses take 48mm filters. I have some Canon close-up lenses in that size.

 

[reddesert]

The Canon Canonet QL17 and QL19 rangefinder small body versions with 40mm lens - these are the ones with the 40mm f/1.7 or f/1.9 lens. There is the G-III version Paul mentioned, but also an earlier version not labeled "G-III" that still has the 40mm lens and small body. The earlier series of Canonets has a larger body and 45mm lens and take larger filters.

If you use a 48mm rubber hood then it may obscure a lot of the Canonet viewfinder, but it is possible to find a metal "vented" hood in 48mm that is much less obtrusive.

 

[xkaes]

Canon used the 48mm filter thread on its Dial half-frame cameras, and on some of their other half-frames used a 34mm thread -- another odd one.

 

[gkardmw]

Thanks for the info - I will be putting these up for sale shortly.

 

[xkaes]

Canon should have gotten into the step-up ring business!

 

[PrairiePhotographer]

I believe the first Summicron 90mm used 48mm filters, too.

https://www.kenrockwell.com/leica/90mm-f2.htm

 

[dourbalistar]

The Nikkor P.C 8.5cm f/2 LTM also has a 48mm filter thread.

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