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  4.Lens



 
 

YONGNUO YN40mm F2.8N

Light-weight Standard Prime Lens

---- YONGNUO YN40mm F2.8N

¨ Finishing Aspheric Lens

YN40mm F2.8N carries finishing aspheric lens, which effectively compensate various aberration.

¨ Firmware Upgrade

YN40mm F2.8N has USB port.To maintain maximum compatibility and performance, the firmware of the lens can be updated. Please download the latest firmware from the offical YONGNUO website.

¨ F2.8 Large Aperture

F2.8 bright and large aperture helps to blur out the background and highlight the subject.

¨ Two Focus Modes Supported: Auto Focus (AF) and Manual Focus (MF)

YN40mm F2.8N supports auto focus and manual focus. You can choose focus mode according to the practical shooting needs.

¨ 6pcs of Aperture Blades

With 6pcs of Aperture blades, YN40mm F2.8N helps making rounded defocused spots, or stops down to make effect of 12 stars.

¨ Durable Metal Mount

YN40mm F2.8N adopts chrome plated and high-precision metal mount, which is consistent with the camera. The mount is wearable, corrosion-resistantand durable.  

¨ Equipped with Focus Distance Indicator

YN40mm F2.8N is equipped with focus distance indicator. Its convenient for you to judge distances and the depth of field.

¨ Various Shooting Modes Supported

YN40mm F2.8N supports various shooting modes. The aperture and other information can be found from EXIF.

¨ Glass Optical Lens, Multilayer Coating

All series of products adopt glass optical lens and multilayer coating, which effectively helps to increase the light transmittance and inhibit backlight and glare.

¨ Gold-plating Technology

YN40mm F2.8N adopts gold-plating metal contacts to effectively increase signal conductivity and corrosion resistance.

 

 

Specifications

Focal Length

40mm

Structure

4 groups 6pcs

Aperture Blades

6pcs

Minimum Aperture

F/22

Minimum Focal Distance

About 0.3m

Maximum Amplification Factor

About 0.18x

Driving System

DC Motor

Filter Diameter

58mm

Maximum Diameter and Length

Aboutφ74×45mm

Weight

About 130g

 

MTF Curve Chart

  

Lens Structure

 

The datas above based on test conditions of our company. Further notice will not be given if the design and specifications change. 





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