SIGMA 15mm F1.4 DG DN Diagonal Fisheye Arts Lens Announced

UK SRP: £1,859

On-sale date: 14 March 2024

Supplied accessories: Case, COVER LENS CAP LC1040-01, TRIPOD SOCKET TS-141, REAR CAP LCR II, PROTECTIVE COVER PT-51, GUIDE PLATE GP-21

Available mounts: L-Mount, Sony E-mount 

 

Introducing the SIGMA 15mm F1.4 DG DN Diagonal Fisheye, the world’s first (1) full-frame F1.4 diagonal fisheye lens. Capture expansive landscape, star-filled skies, creative portraits and architecture with its bright F1.4 aperture and 180° angle-of-view. Get an all-new perspective and let your creativity flow with unique images with exaggerated proportions. The lens features a host of useful features for astrophotographers. Its built-in rear filter holder allows for gel-type ND filters to be inserted, a lens heater retainer that prevents heat strips from slipping over the front of the lens, and a unique manual focus lock switch that disables the focus ring.

Images are sharp across the whole frame thanks to the sophisticated glass elements that effectively reduce sagittal coma flare and other optical aberrations. With its set of professional features including a special locking lens cap with filter holder, tripod socket, weather-resistant construction, customisable AFL buttons (2), HLA motor and aperture ring, the SIGMA 15mm F1.4 DG DN Diagonal Fisheye for L-mount and Sony E-mount one of the most unique lenses in the SIGMA line-up.

 

_{(1) As an interchangeable lens for full-frame cameras for consumer use. (As of February 2024)}

 

_{(2) On compatible camera bodies only}

 

 

Key features

A fisheye lens with outstanding optical quality

 

The 15mm F1.4 DG DN Diagonal Fisheye has an incredible 180° angle-of-view. By employing the latest manufacturing technologies and testing using SIGMA’s proprietary MTF measuring system, the lens delivers outstanding quality across the whole frame.

 

High-resolution images even when shooting at F1.4

The lens can precisely reproduce bright points of light across the whole frame, even when shooting wide open at F1.4. It is constructed using 21 glass elements in 15 groups. 4 FLD and 3 SLD low dispersion glass elements effectively reduce sagittal coma flare and other aberrations. This ensures that bright points of light remain pinsharp at all apertures across the entire frame, ideal for astrophotography.

 

Designed to minimise flare and ghosting

To prevent flare and ghosting the 15mm F1.4 was designed using state-of-the-art simulation technology. This resulted in a lens that is highly resistant to flare and ghosting, producing clear and sharp images in challenging lighting conditions.

 

 

Feature-packed design

 

The SIGMA 15mm F1.4 DG DN Diagonal Fisheye | Art has a professional feature-set that makes it easier for photographers and film-makers to achieve the best possible results. Built into the barrel is an aperture ring, which can be set to Auto for aperture control on the camera. With a very precise action, the ring can also be de-clicked if preferred, or locked in place so that it’s not accidentally knocked out of the correct setting.

 

Lens heater retainer 

At the front of the barrel is a Lens Heater Retainer. This helps hold a heat strip in place, which are often used by astrophotographers when shooting in cold conditions to prevent condensation build-up on the front element.

 

Rear filer holder

The lens features a rear filter holder that allows sheet-type filters to be attached. Soft type filters are preferred by astrophotographers as they make stars appear softer, larger and brighter. Other types of sheet-type filter can also be used. A unique front lens cap has been specially designed with these types of filters in mind. Two filter slots are provided to store pre-cut sheet-type filters, allowing them to be carried with the lens at all times. The cap features a secure lock mechanism to prevent it from falling off unintentionally.

 

MFL lock switch and AFL button

An MFL (manual focus lock) switch can be found on the side of the lens barrel. This allows astrophotographers to completely disable the focus ring, which is useful once the lens has been set to infinity. This means that even if the ring is knocked the focus will not change. An AFL button is included on the lens barrel, which can be customised depending on the camera and system.

 

Detachable tripod socket

As this type of ultra-wide-aperture lens is by nature relatively heavy, attaching the camera to a tripod using the camera’s tripod thread can make the set-up front-heavy, putting the thread under stain and making the camera unstable. So, included with this lens is the TS-141 Tripod Socket, which ensures a more balanced set-up closer to the centre of gravity when mounted on a tripod.

 

Responsive HLA moror

The 15mm F1.4 DG DN Diagonal Fisheye is fitted with Sigma’s High-response Linear Actuator (HLA) motor, which delivers faster, smoother, quieter and more accurate focusing than a stepping motor. This is only the fourth Sigma lens to be designed with this technology, ensuring very responsive focusing in all shooting situations.

 

Expands the range of wide-angle F1.4 DG DN Art lenses

 

With the addition of the SIGMA 15mm F1.4 DG DN Diagonal Fisheye, photographers can now select from four incredible wide-angle F1.4 DG DN Art primes. Each lens can be used for a wide variety of photographic styles and all employ specialised features for astrophotography.

Feature summary

 

• Lens construction: 21 elements in 15 groups (4 FLD, 3 SLD, 2 aspherical elements)

• Inner focus system

• Compatible with high-speed autofocus

• HLA (High-response Linear Actuator)

• Compatible with Lens Aberration Correction

 

     _{* Function available on supported cameras only. Available corrections or auto correction functionality may vary depending on the camera model.}

 

     _{* On cameras where lens aberration correction is controlled with ‘ON’ or ‘OFF’ in the camera menu, set all aberration correction functions to ‘ON’ (AUTO).}

 

• Supports DMF and AF+MF

• Compatible with AF assist (Sony E-mount only)

• Super Multi-Layer Coating

• Water and Oil Repellent Coating (front element)

• Rear filter holder (compatible with GUIDE PLATE GP-21)

• Lens heater retainer

• MFL (Manual focus lock) switch

• Aperture ring

• Aperture ring click switch

• Aperture ring lock switch

• AFL button

 

      _{* Only on compatible cameras. Available functions may vary depending on the camera used.}

 

• Focus Mode switch

• Support for switching between linear focus / non-linear focus ring settings (for L-Mount only)

 

      _{*Function available on supported cameras only.}

 

• Dust and Splash Resistant Structure

• Special COVER LENS CAP LC1040-01 with a locking mechanism and filter slots

• TRIPOD SOCKET TS-141

 

      _{*Detachable lens foot type}

 

• Compatible with SIGMA USB DOCK UD-11 (sold separately / for L-Mount only)

• Designed to minimise flare and ghosting

• Every single lens undergoes SIGMA’s proprietary MTF measuring system

• 11-blade rounded diaphragm

• High-precision, durable brass bayonet mount

• Mount Conversion Service available

• “Made in Aizu, Japan” craftsmanship

Key specifications _{(The figures below are for L-Mount)}

 

Lens construction: 21 elements in 15 groups (4 FLD, 3 SLD, 2 aspherical elements)

Angle-of-view: 180°

Number of diaphragm blades: 11 (rounded diaphragm)

Minimum aperture: F16

Minimum focusing distance: 38.5cm

Maximum magnification ratio: 1:16

Filter size: N/A

Dimensions (max diameter x length): 104.0mm × 157.9mm

Weight: 1360g

 

For further information, please visit the Sigma’s website.

You can also visit our news section for the latest updates on Sigma lenses.