Kenko 49mm Technical 3x3" Gelatin Filter Holder

A very high quality filter 3 x 3" gelatin filter holder, this fits all lenses which accept 49mm threaded filters, though with lenses with focal lengths shorter than 24mm it is not recommended due to the possibility of vignetting.  There's nothing fussy here, no little secondary metal frames to shoehorn in and out of the device; merely leave your filter in its originally-supplied paper casing and use tweezers(or, quite carefully, your fingers placed only upon the filter's corner) to take it from its case to the confines within the AF-1.

When using a polarizer filter in combination with gelatin filters, it is necessary that the polarizer be in front of the gelatin(away from the film/image sensor).  The has a 62mm female threading upon the front, meant to accept 62mm polarizers(three listed here as accessories, be sure to select a circular polarizer for autofocus cameras and certain sophisticated manual focus cameras).