Century Precision Optics WA-7X5X with FA-7X80  type_Instant Black & White The real takeaway here is

The real takeaway here is that this thing is tiny: barely over 200g

The SMC Pentax-M 135mm f3

but its plastic padding material is showing its age

but it can be unscrewed and replaced with any ball head (as long as it has a 1/4" thread

Century Precision Optics WA-7X5X with FA-7X80 &nbsptype_Instant Black & White The real takeaway here isThe Century Precision Optics WA 7X5X is a pair of nested wide angle adapters that attach to the front of a lens. With the 0. 7x on the lens, and the 0. 5x on top, the focal length is effectively halved; you can also use the 0. 7x without the 0. 5x if you need a more subtle effect. While the 0. 7x optic itself has an uncommon 96mm thread, the included FA 7X80 adapter allows the system to be clamped to lenses with an 80mm outside diameter (eg, many 77mm