[daniel_ytc]

如題

[arafeva]

if you look at the aperture ring of an ais and an ai, there are usually 2 sets of f stops numbers, a bigger and a smaller sets.

an ais lens usually has an orange f number on the small end of the aperture (like f16, 22); where as an ai lens is blue I think.

[gwu1]

ais個s字母，好似嘅意思係有shutter priority嘅意思。

[老叟]

手墽嘛,梗係揀AIS嘛,新款嘛

[kby]

AI/AIS - Camera body and lens coupling mechanism.

"An Ai-S lens is best recognized by its lens type signal notch - the little milled notch next to the lens locking indentation. This indicates that the aperture stop down action is linear ...."

"The AI-S lens is an updated version of AI Nikkor lenses: in 1977, Nikon introduced AI-Nikkor lenses which feature full aperture metering via Nikon's "Automatic Maximum Aperture Indexing" or "AI" system. Just by mounting an AI lens on the camera, the maximum aperture is automatically indexed into the camera's metering system. All AI-type lenses feature a meter coupling ridge and a meter coupling shoe with two holes. Then in 1981, Nikon modified their entire line of AI-Nikkor lenses, so that they would be fully compatible with the upcoming Nikon FA's high speed program mode. These new lenses, called AI-S Nikkor, are easily distinguishable by (a) an orange minimum aperture on both regular aperture and aperture-direct-readout (ADR) scales and a special notch on the bayonet mount . In addition, the AI-S symbol appears on the front cover on the instruction manual for each lens...."

Source:
http://www.mir.com.my/rb/photography/hardwares/nikonfmount/lens2.htm

Reference:
1. http://www.nikonlinks.com/unklbil/nomenclature.htm
2. http://www.betterphoto.com/exploring/allDefinitions.asp

[alexlam49]

新仔真係唔多鍾意搵野架喎
下次唔好啦
http://www.dchome.net/viewthread.php?tid=184910&extra=page%3D1