Where to find Geletine filter for 200-400 F4 lens

[lawrence]

I bought a canon 200-400 f4 that comes with a geletine filter holder.   However Canon does not sell this filter, nor can I find one  elsewhere.   I bought an IRIX ND geletine filter set, but these do not fit the shape and size of the holder.    Someone shed me some light on where to find such filter?

[jrhoffman75]

You can purchase gelatin filter sheets from Amazon or B&H Photo and cut to the size shown in te lens user manual.

[lawrence]

But Those are not high quality geletine filters  like the one made by IRIX.   I need ND Geletine filter, not color one.   But Thanks for the suggestion.   

[TCampbell]

Lee Filters makes the gels.   They have both a "photographic" line which are where you find the slide-in filters that they're well-known for....  but they also have a theater line ... to gel lights (photographers use these to color the studio lights).

Lee lists their filters based on "optical density" (OD).  In that system, each ".1" is 1/3rd of a photographic stop.  So a "0.3" filter is 1 full stop.  A "0.6" is 2 stops.  "0.9" is 3 stops, etc.

The filters you probably want to look at are:

• Lee 298 - a ".15" filter (1/2 stop ND)
• Lee 209 - a "0.3" fitler (1 stop ND)
• Lee 210 - a "0.6" filter (2 stops)
• Lee 211 - a "0.9" filter (3 stops)
• Lee 299 - a "1.2" filter (4 stops)

These are sold in sheets.  You have to cut them out and fit them into your gel-holder.

[lawrence]

Tks, will take a look at Lee's site later.  

Tks again