Canon Rangefinder Deep Rear Cap for 19mm f/3.5, 25mm f/3.5, Black Aluminum Review

This is a specialized rear lens cap designed for two specific Canon rangefinder lenses: the 19mm f/3.5 and the 25mm f/3.5. Made from black aluminum, it's a deep-profile cap to accommodate the rear element geometry of these vintage wide-angle lenses. At $75, it's a premium accessory clearly aimed at collectors and users of Canon's rangefinder system who need proper protection for these classic optics. The deep design ensures the rear element is fully shielded without contact, which is essential for preserving the condition of these older lenses. This is a used item graded as excellent condition by KEH, so expect minimal wear. It's a niche product for a niche system, and the price reflects both the specialized fit and the limited availability of original Canon rangefinder accessories.