Canon FD 50mm f/1.4 S.C.

It usually shows up screwed onto a chrome-nosed FTb someone bought for sixty dollars at an estate sale, and that is exactly the right home for it. The S.C. stands for Spectra Coating, the earlier and simpler of Canon's two FD coating grades, with the better S.S.C. Super Spectra Coating arriving right behind it. S.C. was Canon's earlier single-layer Spectra Coating and S.S.C. was the later multi-layer Super Spectra Coating, two coating grades on the same first-generation FD glass, the breech-lock lenses you mount by twisting the silver ring instead of the whole barrel. Made for only a couple of years in the early seventies, this is the cheaper sibling to the S.S.C. version everyone wanted then and most people still want now. The lighter coating and a slightly older optical recipe are the whole story of how it draws.

Wide open at f/1.4 it reads soft and a little dreamy in my copy, with the spherical aberration you expect from a fast double-Gauss fifty putting a faint glow around bright edges and skin highlights. That is not a defect to apologize for. It is part of why people still reach for a vintage f/1.4. Expect it to tighten up noticeably by f/2.8 and reach across the frame somewhere around f/5.6, which is the general trend for this layout rather than a measured promise for any single fifty-year-old example. The bokeh stays calm and rounded, no jittery edges and no harsh outlining, helped by the older multi-blade aperture that holds a near-circle a stop or two down.

Color is where the lighter coating earns its keep, for better and worse. Point it at the sun or a streetlight and it flares warm, losing contrast in broad washes rather than tight ghosts, so backlit frames come back hazy and golden. That mood is exactly what some people want, and it is the same haze that wrecks clean separation when you needed it. The S.S.C. holds all of that in check and renders cooler and more clinical. Pick the one that suits the picture you are actually making.

This is a textbook double-Gauss, the workhorse normal layout every brand built in this era, so nobody buys it for exotic rendering. People buy it because it is one of the cheapest ways into a fast manual fifty that still feels good in the hand, and because it adapts cleanly to mirrorless with a dumb FD adapter (no glass needed, since FD already focuses to infinity on short flange mounts). Street shooters, available-light portraitists, and anyone learning to meter by hand gravitate to it.

The honest weakness is consistency. These are fifty-year-old lenses with coatings that scratch easier than later glass, and the early FD aperture levers can get sticky or oily, so condition varies wildly from copy to copy. Buy one you can test, and watch for haze on the rear element.

Practically, the f/1.4 maximum is the reason to own it. In a dim bar or a city street after dark you can meter and shoot wide open where a slower lens leaves you stranded. Set Zone Light Meter to f/1.4 and let it read for the shadows you actually care about, then remember that wide-open softness means you are buying mood, not resolution. The 55mm filter thread is the standard FD size, so any ND or polarizer from that system drops right on.