w/Caps【Near Mint】MAMIYA-SEKOR 250mm f/4.5 for Mamiya RB67 *Read* Japan #E0530

• Shutter fires at all speeds
• Aperture ring clicks properly
• Aperture blades move smoothly

• Faint fungus on the inner (middle) element. It may have a minimal effect on photos.
• No haze or fog
• No scratches
• No balsam separation

• Brand: Mamiya
• Model: MAMIYA-SEKOR 250mm f/4.5
• Lens Type: Medium Format Manual Focus Telephoto Lens
• Lens Mount: Mamiya RB67 Mount
• Compatible Cameras: Mamiya RB67 Pro, Pro-S, and Pro-SD; Mamiya RZ67 (Manual Shutter Cocking)
• Film Format: 120/220 Medium Format (6×7)
• Focal Length: 250mm
• 35mm Equivalent Focal Length: Approx. 120mm
• Maximum Aperture: f/4.5
• Minimum Aperture: f/32
• Shutter Type: Built-in Seiko Leaf Shutter
• Shutter Speeds: 1 sec – 1/400 sec
• Flash Sync: Full Sync at All Shutter Speeds
• Focus Type: Manual Focus (via Camera Bellows)
• Filter Size: 77mm
• Made in: Japan

The Mamiya-Sekor 250mm f/4.5 is a medium-format telephoto lens designed for the legendary Mamiya RB67 system. On the 6×7 format, its field of view is roughly equivalent to a 120mm lens on 35mm, giving photographers a classic portrait and short telephoto perspective with the image quality only a large negative can provide.

Mamiya's RB67 lenses are known for their sharpness, clarity, and smooth tonal transitions, and the 250mm f/4.5 delivers the same professional rendering. The long focal length creates natural compression and pleasing background separation, which is particularly attractive for head-and-shoulders portraits.

Like all RB67 lenses, it features a built-in Seiko leaf shutter with speeds from 1 second to 1/400 sec. Because the shutter is in the lens, flash synchronizes at every speed, a major advantage for studio and outdoor fill-flash work.

Focusing is handled by the RB67's bellows, which allows the lens to focus closer than many telephotos of similar focal length. The solid, all-metal construction reflects the professional studio heritage of the RB system, and the 77mm filter thread accepts standard large filters.

This lens excels at portraits, fashion, landscape details, and still-life work. Its compression flatters facial features, and its reach lets you isolate distant elements of a landscape for more graphic compositions.

It is compatible with the Mamiya RB67 Pro, Pro-S, and Pro-SD, and can also be used on the RZ67 with manual shutter cocking. With a suitable adapter, it can also be used on some digital and mirrorless cameras, where it becomes a characterful long telephoto, although the leaf shutter must be held open for adapted use.

Medium-format film photography has seen a strong revival, and the RB67 remains one of the most accessible and capable systems to enter it. A good telephoto lens like this 250mm is an important part of building a complete RB67 kit.

If you are looking to expand your Mamiya RB67 system with a high-quality portrait and telephoto lens, the Mamiya-Sekor 250mm f/4.5 is an excellent and highly rewarding choice.