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Compact black 40mm f/2 L-mount lens with all-metal barrel and click aperture ring

TTARtisan

TTARtisan AF 40mm f/2 L Mount Camera Lens Black

SKU CH-CQ8X-J01Q5

A compact 40 mm f/2 autofocus lens for L-mount cameras, weighing 167–176 g with a 0.4 m minimum focus distance

  • Exceptional sharpness from 9 elements in 6 groups
  • Wide f/2 aperture for low light and bokeh
  • Native L Mount fit for Panasonic Leica Sigma
  • STM motor gives fast precise autofocus
  • 5052 aviation aluminium body weighs 167-176g

Compact Full-Frame Prime for L Mount

The TTArtisan AF 40mm f/2 is a lightweight autofocus lens built for L Mount cameras from Panasonic, Leica and Sigma. Its 40mm focal length suits street, travel, documentary and everyday photography on both full-frame and APS-C bodies. The bright f/2 maximum aperture aids low-light work and shallow depth of field, while the minimum aperture reaches f/16.

All-Metal Build with Clicked Aperture Ring

The barrel uses 5052 aviation aluminium and weighs between 167 and 176 grams, giving a dense, premium feel without upsetting balance on smaller bodies. A physical clicked aperture ring provides tactile stop-by-stop control for quick exposure changes. The lens focuses down to .4 metres, allowing close-up detail work, and a USB Type-C port enables firmware updates.

Upgrade from Slower Kit Zooms or Manual Primes

Photographers moving from variable-aperture kit zooms gain a constant f/2 aperture for faster shutter speeds and cleaner background separation. The STM stepping motor delivers quick, quiet autofocus with face detection, replacing the guesswork of manual-focus primes. The jump is worth it when you need a discreet, weather-ready prime that stays mounted all day.

How it compares

Measured against everything we stock in Interchangeable Camera Lenses, at today’s prices. Recalculated every night.

Price $133.99
Cheaper than about 88% of the 2,570 comparable items (median $546.49).

Specifications

No published specifications for this item yet.

Questions about this item

What does the L mount interface cap in practice?

The L mount design provides full electronic communication with Panasonic, Leica and Sigma bodies, so autofocus, aperture control and EXIF data all function natively.

What physical clearance does the 40 mm lens need to mount?

The all-metal barrel measures just 167-176 g and uses 5052 aviation aluminium, so it clears standard L mount flanges and fits comfortably on both full-frame and APS-C bodies without vignetting.

How is firmware updated and which step is often missed?

Connect the USB-C port on the lens to a computer, run the manufacturer's update tool, and keep the cable attached until the progress bar finishes — removing it early bricks the lens.

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