Rollei Bay 2 Rollei Gelb-Mittel (medium yellow) filter  type_Tripods but you've probably seen some

but you've probably seen some of those side-to-side looping "3D" GIFs

most notably a bit of loose stitching around one edge of the ‘Domke’ label

with a smooth "cinematic" look

but do note that this is missing its hand strap

It’s not a zoom

Rollei Bay 2 Rollei Gelb-Mittel (medium yellow) filter &nbsptype_Tripods but you've probably seen someA genuine Rollei Gelb Mittel (medium yellow) filter for the Bay 2 filter mount. Light cosmetic wear, light coating wear which will not affect imaging. Note that this filter is for the less common Bay 2 filter mount, found on only a few Rolleiflex 3. 5 models. Be sure that your camera uses this size before buying.