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Mamiya-Sekor 135mm f/4.5 Seiko Lens for TLR, Black {46}
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$32.00
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Mamiya-Sekor 135mm f/4.5: medium format TLR telephoto with Seiko shutter.
The Mamiya-Sekor 135mm f/4.5 gives Mamiya TLR shooters a longer focal length option when the standard lens isn't reaching far enough. At f/4.5 maximum aperture, it pulls in enough light for available-light work while the Seiko leaf shutter lets you sync flash at any speed, a practical advantage over focal-plane designs. The 46mm filter thread keeps your existing filter collection in play.
This is a taking lens built into the TLR system's interchangeable lens architecture, designed specifically for Mamiya twin-lens reflex cameras. At 135mm, you get noticeably compressed perspective and working distance compared to a standard focal length, which changes how subjects relate to their backgrounds and gives you more room between yourself and whoever you're photographing. For film shooters working with medium format, this focal length on a square negative produces files with a character that's hard to replicate any other way. A proven piece of glass for a system that rewards patience and deliberate shooting.
Who It's For
Portrait photographers working with a Mamiya TLR will find the 135mm focal length creates natural subject separation and comfortable shooting distance without crowding their subjects. Street and documentary shooters who want to work at a slight remove from their subjects benefit from the added reach over a standard lens. Film photographers already invested in the Mamiya TLR system gain a meaningful focal length option for the leaf shutter's flash-sync capability at any speed, useful in mixed or controlled lighting.
Key Features
- 135mm focal length for Mamiya TLR taking lens mount
- f/4.5 maximum aperture for available-light work
- Seiko leaf shutter syncs flash at all speeds
- 46mm filter thread compatible with standard filters
- Compressed perspective ideal for medium-format portraiture
- Interchangeable lens architecture specific to Mamiya TLR system
FAQ
- What shutter does this lens use?
- Seiko leaf shutter, which lets you sync flash at any speed - no focal-plane shutter limitations.
- Will my existing filters work with this lens?
- Yes, it has a 46mm filter thread, so any 46mm filters you own will fit.
- Is this a taking lens or viewing lens for the Mamiya TLR?
- Taking lens only. It mounts in place of the standard taking lens in your Mamiya TLR system.
- What kind of perspective compression does 135mm give on a Mamiya TLR?
- Noticeably compressed perspective compared to standard focal length, which changes how subjects relate to their backgrounds and gives you more working distance from your subject.
- What's the maximum aperture for available-light shooting?
- f/4.5, which pulls in enough light for available-light work with medium-speed film.
- What negative format does this produce?
- Square negative, the standard format for Mamiya TLR cameras.
| Specification | Value |
|---|---|
| Focal Length | 135mm |
| Max Aperture | f/4.5 |
| Mount | Mamiya TLR |
This description was generated using AI based on KEH's internal product standards, product expertise, and knowing what customers care about most. While we strive for accuracy, details may vary by individual item.
| Brand Name | Mamiya |
|---|---|
| Filter Size | 46mm |
| Focus Type | Manual focus (only) |
| Lens Mount | Mamiya TLR |
| Lens Type | Short Tele / Portrait |
| Max Focal Length | 135mm |
| Min Focal Length | 135mm |
