52mm Drop-in Screw Filter Holder 52 (accepts standard 52mm filters)

52mm Drop-in Screw Filter Holder 52 (accepts standard 52mm filters)-  the enclosed regular filter can be exchanged with other commercially available screw-type filters.

Note that only filters with correct filter frame thickness can be mounted on the lens.
Compatible with: EF 300 f/2.8L IS, 400 f/2.8L IS, 500 f/4L IS, 600 f/4L IS lenses.

• Can be exchanged with other commercially available screw-type filters
• 52mm size