The development of OTF standardlens is a key link in the calibration of OTF tester.
镜头的研制是OT F测定仪标定中必不可少的环节。
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I like the Canon 50mm 1.4 or 1.8 (I'm sure there is a comparable Nikon) a faster standardlens will allow you to take great food shots when you are indoors or when less light is available.
You can choose the polarized sort of lenses rather than the standardlens so that you can avert extra reflection from the distinct objects which could has an effect on your visibility.