Introduction

The Zeiss Distagon T* 18mm f/3.5 is the widest prime lens of the Zeiss Z-series. The lens is available for Nikon (ZF.2), Pentax (ZK) and Canon EF (ZE). The 18mm f/3.5 is a manual focus lens just like the rest of its gang. However, the focus indicator in the viewfinder remains active so there's a little guidance here at least. The ZE version uses an electronically controlled aperture so it can be operated via the camera (the ZF/ZK variants feature a classic aperture ring).

The Zeiss lens is almost surprisingly small and light-weight for a lens in this class and that's despite the full-metal body (brass with chromium-plated brass front bayonet). The build quality is downright exceptional. The fluted focus ring feels exceptionally well damped. The front element does not rotate. The physical length remains constant regardless of the focus setting. A dedicated petal shaped hood is supplied. If anything the front cap leaves something to be desired - it doesn't provide much confidence that it'll stick to the lens if nudged a little.

Specifications
Optical construction	13 elements in 11 groups, Floating system
Number of aperture blades	9
min. focus distance	0.3m (max. magnification ratio 1:12)
Dimensions	87x84mm
Weight	510g
Filter size	82mm (non-rotating)
Hood	included, pedal shaped
Other features	-

لنز دوربین عکاسی کارل زایس Distagon T* 18mm f/3.5

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