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SIZE

I measured these dimensions with a digital caliper. They probably will not match anything published elsewhere, since this is my original research.

	1.4 ZF	1.4 AF-D	1.8 AF	1.4 AI	18-200VR	55 Micro	1.4 N-AI
Length	1.762"	1.669"	1.578"	1.579"	4.945"*	2.434"	1.894"
Diameter	2.597"	2.536"	2.554"	2.500"	3.034"	2.485"	2.640"
Length	44.76 mm	42.18 mm	39.09 mm	40.00 mm	126.71mm*	61.85 mm	48.10 mm
Diameter	66.00 mm	64.47 mm	64.80 mm	63.81 mm	77.06 mm	62.86 mm	67.03 mm
rear element	a little curved	almost flat	curved	almost flat	curved	curved	almost flat

* at 50mm. 3.812" (96.79mm) long at 18mm.

WEIGHT

I measured these weights with a digital balance. They probably will not match anything published elsewhere, since this is my original research.

	1.4 ZF	1.4 AF-D	1.8 AF	1.4 AI	18-200VR	55 Micro	1.4 N-AI
ounces	11.590 oz.	8.085 oz.	7.290 oz.	9.050 oz.	19.795 oz.	10.205 oz.**	10.830 oz.
grams	328.5 g	229.2 g	206.6 g	256.5 g	561.2 g	289.4 g**	307.0 g

** 10.235 oz. or 290.0 g with JCII inspection sticker.

The Zeiss seems like the heaviest 50mm, but that doesn't mean it's the toughest. The Zeiss was originally made by Cosina for the Contax SLRs, and has a 58mm filter thread and a deeper, longer front. There's more metal ahead of the front element, which makes it longer and heavier.

PLUG

I spent almost two months shooting and writing this comparison of 50mm lenses. No one pays me for this. If you find this as helpful as a book you might have had to buy or a workshop you may have had to take, feel free to help me write more with a donation.

Thanks for reading!

Ken

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