Thypoch Simera 35mm f/1.4

The Thypoch Simera 35mm f/1.4 is a compact full-frame prime released in 2024. It remains in production. It comes as separate versions for Leica M, Nikon Z, Sony E, Canon RF and Fujifilm X, so pick the version made for your camera.

A 35mm prime suits street, travel and documentary photography. It frames a subject with enough surrounding context to tell the story. The f/1.4 aperture extends that range into low light. The main trade-off is control: focusing is manual only, and there is no stabilisation, so a slow, deliberate working style gets the best from it.

The barrel measures 2 in (50.8 mm) long and 2.13 in (54 mm) wide, so it sits close to the camera. That modest size pairs with the 35mm focal length for unobtrusive street work. The Leica M version weighs 12.5 oz (353 g); figures for other mounts differ. A screw-in filter attaches directly to the 49mm thread.

At 35mm, this lens favours the scene over the isolated detail. You can place a person inside their street, room or market stall and keep the context that explains them. Step closer and the same framing becomes an environmental portrait.

The f/1.4 maximum aperture serves two purposes. It admits enough light to hold usable shutter speeds in dim interiors and evening streets without steep ISO settings. It also narrows depth of field, so a figure can stand clear of a busy background. At f/1.4 the zone of sharpness is thin, so small focus errors show.

Closest focusing sits at 1.5 ft (45 cm), near enough to photograph a face or a plate across a cafe table. Fourteen aperture blades keep the opening nearly round when you stop down, which helps out-of-focus highlights render smoothly.

Stop the lens down and depth of field deepens. That gives you more tolerance when you focus by hand in fast-moving scenes.

There is no image stabilisation. Blur control comes from your shutter speed and your own hold, which matters most for handheld shooting in fading light. A wide aperture reduces the need for slow speeds, but it cannot cover every situation.

Weather sealing is also absent. Rain, spray and blowing dust can reach the workings, so dry conditions or simple shelter are the practical limit. The front element has no fluorine coating, so it needs ordinary cleaning care.

Focus is set entirely on the manual ring, with no autofocus system behind it. Accurate placement therefore depends on your camera's viewfinder aids, such as focus peaking.

The single aspherical element uses a specially shaped surface. Such surfaces help reduce optical faults, including distortion, which can make straight edges appear curved. That correction is useful for the streets and interiors this lens frames. Focusing also moves inner groups rather than the whole barrel, so the barrel does not extend while you focus.