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p.7 #24 · Got my Rokinon 85mm f/1.4 | |
helimat wrote:
I know what you are saying, Paul.... But correct me if I am wrong, but I thought the Nikon bodies had to have specific lenses installed in order for the metering to work, similar to the way Canon bodies need a chip for AF confirm.
As Nikon's had 3 different meter coupling systems over the years, which bodies meter with any given lens is a bit of a mess. The AI coupling system is supported by high-end bodies only and CPU coupling is supported by all bodies. Pre-AI 'Rabbit Ears' coupling is unsupported and officially any pre-AI lens must be AI converted to be used (as a practical matter, the D40, D60, D3000 and possibly the D5000 can mount most pre-AI lenses safely, but not meter with them).
Of the current digitals, the D300 and up meter with CPU-equipped lenses as well as AI lenses. The D90 and down require CPU-equipped lenses for metering. All current versions of the Samyang 85/1.4 are AI-S spec without a lens CPU, functionally equivalent to an AI lens for metering. There are indications that a AI-P version (AI_S with CPU) may get released next year, which will enable metering on all Nikon DSLR's as well as allowing Program and Shutter Priority modes which the bodies which meter with AI lenses cannot do with AI lenses.
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