ZEISS Batis 2/40 CF Lens - Sony E-Mount

ZEISS SKU: 2239-137 | Helix SKU: ZS2239137

Overview

Lightweight wide-angle lens, fast autofocus, close focusing distance: with a 40-millimeter fixed focal length, this lens is excellent for the applications of a standard focal length as well as for typical shooting situations with lightweight wide-angle lenses. An all purpose lens that offers outstanding imaging quality, making it ideal for close-ups.

Thanks to its close focusing distance of just 24 centimeters (9.4 inches), combined with its moderate wide-angle imaging the CloseFocus lens (CF) is excellent for a host of different applications. Thanks to its high micro contrast and initial aperture of f/2, it can perfectly depict individual objects. The ZEISS Batis 2/40 CF on the camera ensures you’re always ready for the important moments – no matter what comes your way. And if you only want to carry one lens with you, this is the best one for your discerning photographer’s eye.

The ZEISS Batis autofocus lenses were specially developed for mirrorless, full-frame sensor cameras from Sony. They have been adapted to work with the camera to form a compact, lightweight system that doesn’t compromise on performance. The lenses are fully compatible with all E-mount cameras and offer not only fast, quiet autofocus, but also protection against dust and weather. For creative photography, the innovative OLED display shows the distance and depth of field to ensure the focusing range can always be perfectly set. The high-speed fixed focal lengths of the ZEISS Batis family offer flawless imaging thanks to their completely revamped optical design. The legendary ZEISS T* anti-reflective coating, combined with more than 125 years of experience in lens development and the latest technologies, ensure that every moment captured with a ZEISS Batis lens provides that exceptional ZEISS look.

Close Focus Function (CF)

The Close Focus function allows you to focus sharply on objects at extremely close range – the closest focusing distance, i.e. the minimum distance between the object and camera sensor, is only 24 centimeters. To ensure exceptional image quality at close range, the lens automatically stops down when it’s a short distance from the object. This ensures the ZEISS lens delivers the high contrast and resolution across the entire focus range that users have come to expect.

Versatile full-frame lens

The powerful lens for the mirrorless full-frame system of Sony fulfills the highest requirements. Despite its compact design, the image meets the expectations of professional photographers. 

Excellent resolution and high contrast

Richly saturated and vivid colours are a must in the creation of lasting impressions. However, stray light within an optical system leads to a lightening of the image that is particularly noticeable in the shadows. This reduces image contrast, with the result that exposures lack contrast and appear faded. To avoid this, ZEISS combines various specially developed technologies to reduce the undesirable effects of stray light.

Robust and weatherproof metal construction

Thanks to features that are designed to keep out dust and spray water, the lens is perfectly suited for critical outdoor conditions. It is also designed for many years of intensive use.

Innovative OLED display

For the first time, you can accurately read the focus distance and depth of field simply and intuitively on the OLED display on the lens. Especially in poor light conditions – excellent readability is always guaranteed.

Smooth and reliable autofocus

The design of the autofocus system requires an extremely accurate shifting of particular lens groups. The focusing system of ZEISS lenses is designed to ensure a robust and smooth-running autofocus mechanism with the best imaging performance.

Specifications

Lens Design

ZEISS Batis 2/40 CF

Originally developed for SLR cameras requiring a long back focal distance for short focal lengths because of the mirror box (the distance between the back lens element and the film plane must be considerably longer than the focal length), the Distagon lenses (retrofocus design) are also ideal for mirrorless system cameras thanks to their optimized ray path. Even with longer focal lengths, the high-performance Distagon optical design enables consistently good correction all the way to the corners of the image and very low field curvature.

 Distagon Design

 Lens with aspheric optical surface

 Lens made of special glass with anomalous partial dispersion

 Aspheric elements and special glass

 "Floating elements" design

Close Focus (CF): Free Software Update

ZEISS Batis 2/40 CF

To ensure exceptional image quality at close range, the lens automatically stops down when it’s a short distance from the object. A software update is now available and it allows photographers to work within a larger focus range with a wide-open aperture. This update means the ZEISS Batis 2/40 CF will only automatically stop down at preset values between f/2 and f/2.5 at close range and at a focus distance of between 24 and 65 centimeters – in extreme cases (close focusing distance) to max. f/2.8. With a preset aperture value of f/2.8 and above, the aperture will remain unchanged across the entire focus range.

Also, the update will enhance the focus accuracy when using the camera’s Eye AF function. You can download the free update here and easily run it on the lens via your Sony camera.

 

Aperture

Focus distance

Technical Specifications

ZEISS Batis 2/40 CF

Performance	Focal length	40 mm
	Aperture range	f/2 – f/22
	Camera mount	Sony E-Mount*
	Format compatibility	Full Frame
	Focusing range	0,24 m (0.78 ft) – ∞
	Free working distance	0,14 m (0.45 ft) – ∞
	Angular field** (diag. | horiz. | vert.)	56° / 47° / 33°
	Diameter of image field	43,3 mm (1.7″)
	Coverage at close range (MOD)**	79 x 117 mm (3.1 x 4.6″)
	Image ratio at minimum object distance	1:3.3
	Lens elements | groups	9 / 8
	Flange focal distance	18,0 mm (0.71″)
	Entrance pupil position (front of image plane)	75.1 mm (2.96″)
Features	Autofocus	+
	Image Stabilization	–
Physical	Filter thread	M67 x 0,75
	Rotation angle of focusing ring	Focusing not mechanically coupled. Rotation angle depending on rotation speed.
	Diameter max.	91 mm (3.6″)
	Diameter of focusing ring	78 mm (3.1″)
	Length (with lens caps)	106 mm (4.2″)
	Length (without lens caps)	93 mm (3.7″)
	Weight	361 g (0.80 lbs)