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| p.1 #19 · A sincere apology. The c/y Zeiss 35/70 is a good lens. |
The 100-300 is unusual in being essentially aperture-agnostic at the short end. Sensibly, the 300mm end is good in the centre, less so elsewhere. Most of my CY lenses are not into full stride at F4, I seldom shoot below F5.6 and prefer f8. The old 'two stops down' rule agrees with CZ MTF because both are generally correct.
The 35-70 is perhaps fragile but it is 20 years old and turns out excellent photographs at a rate that puts many modern lenses to shame, below F3.4 of course. And speaking photographically I hasten to add, something of a blasphemy on latter day gear fora.