A36 filter engraving vs codeword/number

[rionda]

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Hi All,

I have a bunch of A36 filters, all engraved some variant of "E. Leitz Wezlar Germany" and I'm trying to map the engraving vs the keyword/number. Can anyone please help?

0 (zero): I believe it is FIHEL 13000

1: probably FIGRO 13005

2: likely FIGAM (no number?)

Gr (for Grüne): Is this FIPOS, FICOR, or FOOBD?

Or (for Orange): FSEOO 13025

R.h. (for Rot hell): FEDOO 13040

Bl (for Blau): BQCOO 13020

I then have an R.d., which is supposed to be for Rot dunkel, but the lens in it is yellow and looks very similar to my 2 filter, so I assume that some shenanigan may have happened here...

Finally, I have one A36 filter engraved "E. Leitz N.Y." followed by the letter "O" (or is it a zero?) and the letter "R". There is a bit of distance between the two letters, it is not "OR", but the lens is orange, of a slightly darker tone than the Or filter FSEOO (certainly lighter than red). I'm thinking it could be a FIQUX.

I would appreciate any help.

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[lct]

AFAIK...

BQCOO: Blue Filter
FEDOO: Red Filter
FEOOG: Infra-Red Filter
FICOR: ?
FIGAM: ?
FIGRO: Yellow filter # 1
FIHEL: Yellow filter # 0
FIOLA: U.V. Filter
FIPOS: Green Filter
FIQUX: ?
FOOBD: Gradual Green Filter
FSEOO: Orange Filter

[ironringer]

Among my 20+ A36 filters are several whose glass has been replaced with a different filter than the rim engraving shows. They are designed for replacement (you can unscrew the glass retaining ring) and previous owners have taken advantage of that intelligent feature. I plan to take a couple of larger Skylight filters (gently used, name brand, 49mm, 52mm and 55mm  filters are very inexpensive at camera stores) to a local optometrist to get them ground to the right size for use in empty A36 mounts.

[mobius981]

Hi there,

I have the A36 Rd filter (rot dunkel). dunkel means dark, so likely the darkest red filter. It is very dark, can hardly see through it, looks almost black....so yes, some oddity with your yellow filter in this mount.

Secondly and I am most interested, I also recently acquired the 0  R filter. it is quite pale. I compared the 0 to the 0 on my Yellow 0 A36 filter, and the font/size looks just the same. I can't find info on this 0  R anywhere. The seller thought it was a Flash or a Haze filter as that is what is on the BOX (!). My current theory is that it MIGHT be the very palest RED. so...Zero for palest, and R for RED (or Rot in German). I spose part of the fun for me is the continuing mystery of all things Leica.

Anyone else have more info on this filter as OP requested? I cannot find a thing and not for want of trying.

(The engraving marks as identifier would be most useful in the many lists of Leica things. So would a COMPLETE list of A36 filters somewhere, with names, maybe boxes, engraving marks and catalog numbers. If anyone knows, pls respond!)

Edited June 7, 2022 by mobius981

[jaapv]

This filter is in te same range as B+W 091 or 092 (somewhere in-between) and gives highly dramatic near-IR results. Be aware that it can cause focus shift. A pale yellow filter is just that. A haze filter is pink. 

[mobius981]

38 minutes ago, jaapv said:

This filter is in te same range as B+W 091 or 092 (somewhere in-between) and gives highly dramatic near-IR results. Be aware that it can cause focus shift. A pale yellow filter is just that. A haze filter is pink. 

Wonderful. I assume you must be talking about the R.d. filter? (I have seen that one listed once...most are Rm (mittel) or Rh (light)). Any documentation that you might know of?

Still searching for that elusive 0  R A36 filter(as I hold it in my hand lol).

Also, why have an IR filter (engraved that way) if we have three progressive Red filters? And so on....

 

 

Edited June 7, 2022 by mobius981

[jaapv]

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Yes. the B+W filters are dark red and near IR. The 093 is full IR. 

[Pyrogallol]

All the different filters are listed in the Hove Leica accessory guide book, but it doesn’t have the designations such as Rm, Rd.

I have the various red filters, Rh, Rm, IR etc.  I have a bit of a collection of red filters. The density of the red seems to vary and some that might say Rh look darker than “hell” or “light” maybe over the years they changed what they considered light or dark?

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[Anbaric]

Can anyone confirm the diameter of the glass in an A36 filter? I've seen 34mm quoted, which seems reasonable, and wondered if the glass from a modern 34mm screw-in filter could be used uncut in an A36 ring that has lost its glass (34mm is a pretty uncommon size, but there are a few of them about from Heliopan, etc.).

[Kl@usW.]

Am 9.5.2021 um 21:03 schrieb rionda:

Hi All,

I have a bunch of A36 filters, all engraved some variant of "E. Leitz Wezlar Germany" and I'm trying to map the engraving vs the keyword/number. Can anyone please help?

0 (zero): I believe it is FIHEL 13000

1: probably FIGRO 13005

2: likely FIGAM (no number?)

Gr (for Grüne): Is this FIPOS, FICOR, or FOOBD?

Or (for Orange): FSEOO 13025

R.h. (for Rot hell): FEDOO 13040

Bl (for Blau): BQCOO 13020

I then have an R.d., which is supposed to be for Rot dunkel, but the lens in it is yellow and looks very similar to my 2 filter, so I assume that some shenanigan may have happened here...

Finally, I have one A36 filter engraved "E. Leitz N.Y." followed by the letter "O" (or is it a zero?) and the letter "R". There is a bit of distance between the two letters, it is not "OR", but the lens is orange, of a slightly darker tone than the Or filter FSEOO (certainly lighter than red). I'm thinking it could be a FIQUX.

I would appreciate any help.

I have  a " Gb" in my bag,  it is a Yellow graded filter. Code unknown. Yellow is about the density of the "2", engraved "oben"  meaning upwards  90 degrees from the screw and a notch. No idea about the b in "Gb"...    

I know there's a "0" in my drawer--but at home. I'll have a look when back home.