Nikon released its major achievement, CRC (Close Range Correction) with this lens in 1968 and it got a well-deserved popularity in the years afterwards. There have been a number of versions of this 24 mm lens, the first without multi-coating and f/16 as minimum aperture, the next multi-coated but still f/16, and the later versions (AI, AIS) going to f/22. Nikon has made several changes to the optical formula during the long life-span of this lens, which still is on Nikon's price list. Earlier versions flared less easily, but could produce quite visible ghosting when employed under strongly backlit situations. Newer versions flare more easily, but the resistance to ghosting has improved provided the lens is well stopped down. It gives very sharp images corner-to-corner even at the near limit thanks to CRC, but beware of field curvature if you are shooting perfectly flat subjects at close range. Some light fall-off towards the corners is evident at f/2.8 and gone by f/4-f/5.6. Set the lens to f/5.6-f/11 to get the best picture quality, but do not stop down to f/22 unless absolutely necessary. It provides excellent results when an ultra-thin K1 ring is added, and gives good results with a 4T close-up lens if some corner softness is accepted. The 24/2.8 MF Nikkor is a classic lens in the Nikon line and one that remains a dependable workhorse to this day.