Minolta MD Fish-Eye Rokkor 16mm f/2.8

Squeeze into a ship's galley with the cook a foot from your elbow and every ordinary lens runs out of room before the scene does. A 24mm gets you the cook's shoulder and a stretch of steel. The MD Fish-Eye Rokkor gets the galley. It covers 180 degrees across the diagonal and still fills the whole 35mm frame, so the lamp overhead and your own knee land on the same negative, bowed like a reflection in the back of a ladle. Minolta's 7.5mm fisheye draws a circle floating in black. This one keeps the rectangle and turns the curve into the composition.

Minolta's data has it arriving in October 1977, the year the XD-11 brought in MD coupling, and at first it was the MC lens carried forward. Same 11-element design, 440 g of it. What changed was the MD lug, which tells an XD-11 the lens's smallest f-stop for shutter priority, and that stop itself: MD versions close down to f/22, where the MC Fish-Eye Rokkor stopped at f/16. The real redesign came in April 1980, when Minolta redrew it as 10 elements in 7 groups and the weight fell to 265 g. The Japanese list price for that version was 78,000 yen.

The drawing is textbook fisheye. Lines that pass through the center stay straight, so a horizon run through the middle of the frame stays flat; everything else bends harder the nearer it sits to the edge. Tip the camera a few degrees and the horizon arches into a hill or sags into a bowl. Rokkor Files calls the lens incredibly sharp from corner to corner and is unconvinced by the common view that the 11-element original is slightly better. At f/8 the depth of field runs so deep that focusing becomes a formality.

There is no front thread. A turret inside the lens holds the filters instead: Normal, Y52, B12 and R60 on the 10-element version, with an orange O56 in place of the red on the earlier lens. Those four are the whole filter kit. You get no grad for a hot sky and no ND for dragging the shutter at noon. The turret also changes how you meter. The camera's TTL meter reads through whichever filter is set, but a handheld reading does not, so when you meter with Zone Light Meter, add the factor of the filter actually dialed in. On Normal there is nothing to add. Leave the red in after a sky shot, meter the next scene without its factor, and that frame comes back thin.

A full-frame fisheye pays off where the walls are the subject: a spiral stairwell shot straight up, a car interior from the dashboard, a crowd pressed against a stage barrier with the lens nearly touching the front row. The danger is that the curve does the work for you. A fisheye makes a lazy frame look like something, and by the third roll the trick shows. Anyone who needs walls to stay straight should look at Minolta's 17mm f/4 instead, which also takes ordinary front filters.

If you are buying, the 10-element lens is the easier recommendation. It is 175 g lighter, focuses to 0.25 m against the original's 0.3 m, and gives you the red for darker skies. Rokkor Files, which calls it a professional-quality lens, notes that it kept a painted metal aperture ring where most late MD lenses went to plastic, and the hood is built in. The heavier 11-element original is for whoever trusts its reputation more than Rokkor Files does.