Canon EF 70-300mm f4-5.6 IS USM brand_Logan but also relatively compact: this

but also relatively compact: this camera comes with a 12" rail and an attachable 6" extension for longer lenses

so the tradeoff is likely worth it

but compatibility is spotty with newer OS versions

an easy to use settings dial with flash on/off/auto settings

The Pentax 67 Reverse Adapter allows lenses wth a 67mm front filter thread to be mounted in reverse on a Pentax 6x7 camera

Canon EF 70-300mm f4-5.6 IS USM brand_Logan but also relatively compact: thisThe Canon EF 70 300mm f4 5. 6 IS USM is a good quality telephoto zoom lens with quiet USM focusing and an effective image stabilizer to keep camera shake manageable. In excellent condition, with only very minor cosmetic wear, clean glass, good function.