Minolta's compact standard — the 45mm f/2.8 Auto Rokkor-TD, a slightly-wide normal from the mid-60s.
The Minolta Auto Rokkor-TD 45mm f/2.8 is a compact standard manual-focus lens for Minolta reflex cameras from the mid-1960s. The Auto prefix indicates an automatic-diaphragm lens, and its 45mm focal length sat slightly wide of the usual 50-58mm standard, giving a compact normal optic often paired with smaller-bodied cameras of the era.
This is a manual-focus standard lens with a 45mm focal length and a maximum aperture of f/2.8. The TD code encodes the element and group layout in Minolta's system. Beyond the confirmed focal length and aperture, exact construction figures for this specific lens are not verified here and are omitted rather than invented.
A 45mm focal length delivers a natural, slightly wider-than-normal field of view that works well for everyday shooting, street photography and travel, keeping perspective close to what the eye sees. The f/2.8 maximum aperture is moderate, making the lens compact and light while still usable across general subjects in good light.
On the used market this is a modest, relatively common early Rokkor bought by Minolta users wanting a small standard lens. Given its age, inspect for haze, fungus and separation, check that the aperture is dry and snaps closed cleanly, and confirm the focus helicoid moves smoothly. Look over the coating for cleaning marks and verify the filter thread is undamaged.