Question 1

What is the difference between an f/1.8 and f/2.8 lens for medium format portrait work?

Accepted Answer

An f/1.8 lens lets in roughly twice as much light as an f/2.8 lens, which means faster shutter speeds and shallower depth of field. On medium format, however, even f/2.8 produces noticeably more background blur than you'd get from the same aperture on a full-frame camera, because the larger sensor magnifies the optical effect. For most portrait and wedding scenarios, f/2.8 gives you beautiful subject separation while still keeping both eyes in focus — which can be a real challenge at faster apertures on medium format. The Phase One Schneider 80mm f/2.8 LS (sometimes written 80mm 2.8) hits a practical sweet spot for people photography.

Question 2

Who makes Phase One cameras and lenses?

Accepted Answer

Phase One A/S is a Danish company that specialises in high-end digital medium format photography systems. The Schneider-Kreuznach lenses — including the 80mm f/2.8 LS Blue Ring — are made by the German optics manufacturer Schneider-Kreuznach and are sold under the Phase One XF lens lineup for the Phase One / Mamiya 645 mount ecosystem.

Question 3

What does 'LS' mean on Phase One Schneider lenses?

Accepted Answer

LS stands for Leaf Shutter. Unlike a focal-plane shutter inside the camera body, a leaf shutter sits inside the lens itself. The big practical advantage is flash sync at any shutter speed — you're not limited to 1/125s or 1/250s like on most cameras. For wedding photographers mixing daylight and off-camera flash outdoors, this is a genuine workflow changer.

Question 4

What does the 'Blue Ring' mean on the Phase One Schneider 80mm f/2.8?

Accepted Answer

The Blue Ring designation on Phase One Schneider lenses indicates the updated version with a metal focus ring, as opposed to the earlier silver-ring versions which used a rubber focus ring. Optically the two versions perform the same; the difference is entirely in the build material and tactile response.

Question 5

Is the Phase One Schneider 80mm f/2.8 LS compatible with Phase One bodies?

Accepted Answer

The 80mm f/2.8 LS Blue Ring uses the Phase One / Mamiya 645 mount, which is the standard mount for Phase One system bodies. It supports autofocus.

Question 6

How close can the Phase One Schneider 80mm f/2.8 focus?

Accepted Answer

The minimum focus distance is 0.7m. That's measured from the sensor plane, so in practice your working distance from the front of the lens to your subject will be somewhat shorter. For portrait and wedding work this is more than adequate — you can fill the frame with a face or hands holding rings without being uncomfortably close to your subject.

Question 7

How does the Phase One 80mm compare to the Phase One 45mm Blue Ring for weddings?

Accepted Answer

The Phase One 45mm Blue Ring gives you a wider field of view, useful for room shots, group photos, and environmental portraits where you want to show context. The 80mm f/2.8 LS is narrower and more flattering for individual portraits — it naturally compresses the image in a way that's forgiving for faces and details.

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Phase One Schneider 80mm f/2.8 LS (Blue Ring)

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