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Sigma 20mm f/1.4 DG DN Art Lens for L Mount
Product Code: G242257L
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The ultra wide Sigma 20mm f/1.4 DG DN Art Lens for L Mount delivers outstanding optical performance, a fast f/1.4 aperture and advanced features for astrophotography, architecture, interiors and landscapes.
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We Love
- Bitingly sharp results with excellent detail from an ultra wide angle fast prime lens with Sigma Art-line optical design
- Extremely well controlled aberrations including sagittal coma flare and chromatic aberration which is essential for astrophotography
- Aperture ring with lock switch and de-click setting as well as a manual focus lock to fully disable the focus ring
- Front 82mm screw-in filter thread together with rear filter mount and customisable AFL button for individual workflows
- Plenty of features for hybrid content creators to customise the lens and capture stills and video both inside and outdoors
Sigma 20mm f/1.4 DG DN Art Lens for L Mount Summary
Arriving with uncompromising attention to detail, the Sigma 20mm f/1.4 DG DN Art Lens for L Mount cameras delivers outstanding optical performance and usability. The ultra wide angle prime lens offers a fast f/1.4 aperture and advanced optical design for mirrorless cameras, which renders excellent detail and sharpness even when wide open. Sigma includes a number of new features which assist with astrophotography as well as other subjects for which an ultra wide lens is suitable including landscape photography and architecture. These include the ability to use multiple lens filters with an 82mm front filter thread and rear filter holder, a Manual Focus Lock (MFL) switch to fully deactivate the focus ring and avoid accidental knocks. There’s also a Lens Heater Retainer to mount a heat strip firmly in place.
The 20mm f/1.4 DG DN Art for L Mount lens includes the ability to switch between linear and non-linear focus ring settings, when using the optional Sigma USB Dock UD-11 as well as an aperture ring with de-click option. Other useful features for videography such as Sigma’s Stepping motor, which delivers fast, near-silent autofocus ensure this will be a successful lens for moviemakers as well as photographers.
Key Features
- Supports linear and non-linear focus ring settings
- Compatible with Sigma USB Dock UD-11 to customise the lens
- Bright f/1.4 maximum aperture perfect for astrophotography, photo and video
- Low 635g weight
- Manual aperture ring with de-click and lock functionality
- Front 82mm filter thread and rear filter holder
- New Manual Focus Lock (MFL) switch to fully deactivate the focus ring
- Customisable AFL button
- Extremely sharp results
- 11-blade rounded diaphragm
- Well suppressed aberrations including sagittal coma flare
- Stepping motor delivers fast, near-silent autofocus
- Super Multi-Layer Coating, Nano Porous Coating and water and oil-repellent coating
- Dust and splash-resistant structure
Sigma 20mm f/1.4 DG DN Art Lens for L Mount in More Detail
Outstanding optical performance
The Sigma 20mm F1.4 DG DN | Art delivers highly refined results, which satisfy the demands of professional photographers and filmmakers using full-frame Sigma, Panasonic Lumix S and Leica SL cameras. The optical formula includes 17 elements arranged in 14 groups, with two SLD elements and three aspherical elements, one of which is the largest double-sided aspherical element ever produced for a Sigma lens. This advanced optical design suppresses a number of optical aberrations including sagittal coma flare and chromatic aberration, offering pin-sharp results across the frame, even wide-open at f/1.4.
Professional build quality
The 20mm F1.4 DG DN for L Mount meets the exceptionally high standards we expect with a robust body made from a combination of aluminium and Thermally Stable Composite (TSC) gives a sleek finish and the focus ring has a well damped, smooth action. A lockable rubber gripped petal-shaped lens hood is included, which can be securely fastened to the lens without risk of it falling off. This ultra wide angle prime lens is also ideal for longer outdoor shoots thanks to a dust and splash-resistant structure, a water and oil-repellent coating on the front element and a rubber seal around the mount.
Advanced functionality for every shooting situation
An 82mm front filter thread is built-in despite the prime lens’ wide f/1.4 aperture and ultra-wide angle-of-view. There’s also a rear filter holder, proving an effective way of utilising multiple lens filters simultaneously, which is particularly useful for astrophotographers, who may want to attach a light pollution filter such as the NUANCES 82mm Clearsky Light Pollution Filter as well as a soft filter at the rear.
A manual aperture ring with lock switch is built in, which is de-clickable for smooth transition between aperture settings and useful for changing exposure seamlessly when shooting video. Sigma added a new Manual Focus Lock (MFL) switch which completely deactivates the focus ring, ensuring the focus position won’t change even if it is accidentally knocked.
A customisable AFL button is also included built into the lens, which can be customised to a range of different functions and film-makers will appreciate the fast yet near-silent autofocus stepping motor. Another new feature for astrophotographers is the Lens Heater Retainer, which is a pronounced lip around the front element to keep a heat strip firmly in place. Heat strips are commonly used to stop condensation forming on the elements when working at night.
Additional features
- Lens construction: 17 elements in 15 groups, with 2 FLD an
- Internal focus system
- Stepping Motor
- Compatible with Lens Aberration Corre
- Support for DMF and AF+MF
- Super Multi-Layer Coating, Nano Porous Coating and Water- and oil-repellent coating
- Focus Mode Switch
- Lens Heater Retainer
- Aperture Ring
- Aperture Ring De-click Swit
- Aperture Ring Lock Switch
- AFL Button
- MFL Switch
- Rear filter holder
What’s in the box
- Sigma 20mm f/1.4 DG DN Art Lens for L Mount
- Front Cap LCF-82 III
- Petal-type lens hood with lock LH878-04
- Rear Cap LCR II
Sigma 20mm f/1.4 DG DN Art Lens for L Mount Specifications
- Lens construction: 15 groups, 17 elements (2 FLD and 3 aspherical elements) Angle-of-view: 94.5°
- Number of diaphragm blades: 11 (rounded diaphragm)
- Minimum aperture: F16
- Minimum focusing distance: 23cm
- Maximum magnification ratio: 1:6.1
- Filter size: φ82mm
- Dimensions (max diameter x length): φ87.8mm x 111.2mm
- Weight: 635g
| Offers: N/A |
| Offer Category: N/A |
| Offer Product Type: N/A |
| Autofocus: Yes |
| Aperture ring: Yes |
| Constant Aperture: Yes |
| Lens CIPA Image stabilization rating: N/A |
| Colour: N/A |
| Diameter (mm): 88 |
| Length (mm): 111 |
| Weight (g): 635 |
| Distance scale: N/A |
| DoF scale: N/A |
| Elements: 17 |
| Environmental Sealing: N/A |
| Focus distance limiter: N/A |
| Focal length: 20 mm |
| Focus method: N/A |
| Filter Thread: N/A |
| Full time manual: Yes |
| Groups: 15 |
| Hood supplied: Yes |
| Lens Image stabilization: N/A |
| Lens mount: N/A |
| Lens Materials: N/A |
| Maximum focal length: 20 |
| Maximum magnification: N/A |
| Maximum aperture (number): 1.4 |
| Maximum aperture (text): N/A |
| Max Format size: N/A |
| Minimum focal length: 20 |
| Lens Minimum focus distance (m): 0.23 |
| Minimum aperture (number): 16 |
| Minimum aperture (text): N/A |
| Motor type: N/A |
| Number of diaphragm blades: 11 |
| Power zoom: N/A |
| Special elements / coatings: Two Super-Low Dispersion elements, three aspherical elements, Super Multi-Layer coating, and water- and oil-resistant coating. |
| Tripod collar: N/A |
| Lens type: N/A |
| Wide/Tele: N/A |
| Lens Level: N/A |
| Best For: N/A |
| Best For Holiday and Landscape: Yes |
| Best For Interior and Architecture: Yes |
| Best For Fashion and Portrait: N/A |
| Best For Macro and Still Life: Yes |
| Best For Astro: Yes |
| Best For Street: Yes |
| Best For Wildlife and Sport: N/A |
| Zoom lock: N/A |
| Zoom method: N/A |
| Notes: N/A |
Thinking of choosing finance?
Finance is a great way to spread the cost of your purchase. To make it easy we have teamed up with Omni, one of the UK’s leading finance specialists, so that you can apply for and complete a loan application quickly, easily and informatively.
Omni Capital Retail Finance Ltd which is a credit provider/ lender regulated by the Financial Conduct Authority whose finance options are best suited for you and your purchase.
Simply add the items you love to your basket. Once you are at the checkout select the finance option that suits you and choose Omni. The quick application form is simple and should take no more than a couple of minutes to complete and you will receive a decision instantly. Easy!
Use our finance calculator to check the impact of various loan values, terms and interest rates on the total amount you need to pay and the monthly repayments.
Representative example:
Buy Now Pay 2025, a 36-month loan following a 3-month deferral period. Buy a £1,500.00 camera and pay a 10% deposit of £150, Total Amount of Credit £1350. 1st payment deferred for 3 months – rest of balance can be paid off in this period with no interest, however a £29 early settlement fee is payable. 36 monthly repayments, with a first payment of £48.87 followed by 35 monthly repayments of £48.51. The total amount payable will be £1746.72 16.9% APR Representative
Buy Now Pay 2025 | Finance available See options |
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Buy Now Pay 2025
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Check your eligibility
To be considered for finance, you will need to meet all of the following criteria:
- Are at least 18 years old
- Are in regular full or part-time employment (minimum 1 hour per week or £10,000 income per annum), unless you are retired and receiving a private or company pension, or you are in receipt of disability living allowance
- Are a permanent UK resident and have lived in the UK for at least 3 years
- Have a UK bank account capable of accepting Direct Debits
- Have a good credit history with no late payments, Debt Relief Orders, County Court Judgments or bankruptcies.
Please note that, due to calculations, your monthly repayment may differ very slightly from what you were expecting. Please check your monthly repayment figure before proceeding
Missed or late payments will result in fees and additional interest on your loan and can also affect your credit file and your ability to obtain credit in the future.
Credit is subject to status, UK only, 18+
Park Cameras Limited is a credit broker, not a lender and is authorised and regulated by the Financial Conduct Authority (FRN 680161). We do not charge you for credit broking services. We will introduce you exclusively to finance products provided by Omni Capital Retail Finance Ltd.
Omni Capital Retail Finance Ltd which is a credit provider/ lender regulated by the Financial Conduct Authority, Firm Reference Number: 720279. For more information please go to www.omnicapitalretailfinance.co.uk/contact/customer or visit www.omnicapitalretailfinance.co.uk.
Find out more about paying with finance here and Omni Capital Retail Finance Ltd terms here
Our Verdict
20mm is an ultra wide angle lens and the Sigma 20mm f/1.4 DG DN Art Lens for L Mount also features an ultra wide aperture, which makes it especially useful for handholding and gathering light in the darkest situations. To capitalise on this, Sigma has included several features which will appeal to astrophotographers, such as the ability to add a heat strip to reduce condensation. Of course this will also be welcome with landscape photographers and anyone who shoot outdoors in changeable conditions.
The optical design in the 20mm f/1.4 DG DN delivers premium results in-line with Art series lenses and various elements and lens coatings render extremely well controlled aberration with reduced flare and ghosting. This is ideal for shooting backlit subjects and rendering high contrast regardless of light sources in the frame.
Videographers will also love this optic for its ability to capture smooth focus pulls using either linear or non linear settings, as well as a silent aperture ring and fast, quiet AF when needed. With the release of this and the Sigma 24mm f/1.4 DG DN Art Lens for L Mount it comes down to personal preference as to which ultra wide prime will work better for you.
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Condition guide
Our used products are subject to wear and tear in comparison to brand new products. This also applies to accessories that are supplied with the camera including batteries which may have a lower optimum performance level/life expectancy.
- Like New – The equipment is in a condition as if you have just bought it from the manufacturer. The item is still considered to be ‘Like New’ even without the original packaging and accessories. The product has been fully tested and is in perfect working order. Lenses are optically clear. There may be light dust present that will not effect the imagery.
- Excellent – The equipment should be close to being ‘Like New’ but there may be some small cosmetic blemishes that lower its grade. The product has been fully tested and is in perfect excellent order.
- Cameras – Should have no marks on the LCD screen
- Lenses – Should have no marks on the elements and optically clear. There may be light dust present that will not effect the imagery.
- Very Good – The equipment may have some slight cosmetic wear to the paintwork and cosmetic blemishes with only light signs of use and the product has been fully tested and is in great working order.
- Cameras – The LCD screen may have small signs of wear that does not affect its display
- Lenses – The mount of the lens will start to show signs of wear
- Good – The equipment is showing more obvious signs of cosmetic wear and blemishes, but the product has been fully tested and is in great working order.
- Cameras – LCD screen may have scratches or wear that is starting to affect the display.
- Lenses – May have slight dust inside that does not affect images. The mount shows signs of use.
- Well Used – The equipment will show significant signs of wear. The paintwork will be coming away in large areas exposing the metal work, but the product has been fully tested and is in great working order.
- Cameras – LCD screen is heavily worn either by de-lamination or has scratches to it. Rubber grips are starting to come away from the body.
- Lenses – The lens has dust inside that may affect images. The rubber zoom/focus ring is coming away from the barrel of the lens.
*All of our used items are listed with the accessories that are included. If they are not listed, then they will not be supplied at the point of purchase.
Peace of mind with our 6 month warranty
This product has been thoroughly tested by our team of photographers and we are happy to give a 6 month warranty as a result. The number of tests depends on the individual product but we are confident in this product having tested all the major functions. Anything that isn’t as you would expect, we then make a note of and show this in the condition notes on the page.
So you can be confident you are buying a great piece of kit that’s been looked after by a fellow photographer and seen many extraordinary sights, tested by our team of photographers and now looking forward to being set free to capture more great images!
