Pentax Takumar 200mm f/4 - M42 Mount

This telephoto prime for M42 screw mount systems features a five-element optical design and a built-in retractable lens hood. It is a manually operated lens known for its solid all-metal construction and smooth focus throw. While it is a relatively slow telephoto by modern standards, its compact dimensions make it a portable option for outdoor portraiture and distant subjects where a narrow field of view is required. When inspecting a used Takumar 200mm, check the internal elements for haze or fungal growth, which can occur in older optics. The built-in hood should slide smoothly and remain in position without slipping. SDS verifies that the preset or automatic diaphragm mechanism functions correctly and that the focus ring moves consistently across the entire range without grit or resistance.