49mm filters Filter type:Five facet radial prism Slightly irregular (but very usable)

Slightly irregular (but very usable) focusing action

this will not interfere with a lens which is not keyed

The MF-4 back is film-tested for spacing and works well

Please keep in mind that this is just an accessory lens

The OM-4 is a manual-focus 35mm SLR camera with a built-in averaging spotmeter system- which is pretty darn fancy

49mm filters Filter type:Five facet radial prism Slightly irregular (but very usable)Good quality 49mm filters from various brands. All are checked for condition, and will be optically clear; non optical parts may show minor cosmetic wear which will not affect function (e. g., no bent threads). If you have a specific brand request, please let us know if the purchase notes and we will try to accommodate (subject to availability)