Sigma
20mm F1.4 DG DN Art
Sony E Mount
20mm F1.4 DG DN Art — 20mm f/1.4 for Sony E, a popular choice in the sigma lineup.
$899
Launch priceReleased Aug 2022
Sigma
50mm F1.2 DG DN Art
Sony E Mount
50mm F1.2 DG DN Art — 50mm f/1.2 for Sony E, a popular choice in the sigma lineup.
$1,499
Launch priceReleased May 2021
20mm F1.4 DG DN Art is 1.3 years newer.
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Wins
20mm F1.4 DG DN Art
Wins
50mm F1.2 DG DN Art
3 categories tied
TL;DR — Key differences
- A20mm F1.4 DG DN Art has lower Weight (335 g vs 946 g)
- A20mm F1.4 DG DN Art has lower Length (97 mm vs 182 mm)
- B50mm F1.2 DG DN Art has lower Max aperture (Wide) (f/1.2 vs f/1.4)
- B50mm F1.2 DG DN Art has lower Max aperture (Tele) (f/1.2 vs f/1.4)
- B50mm F1.2 DG DN Art has lower Diameter (81 mm vs 86 mm)
Key specs at a glance
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose the 20mm F1.4 DG DN Art
- ✓
Weight
335 g vs 946 g — lower is better
- ✓
Length
97 mm vs 182 mm — lower is better
Reasons to choose the 50mm F1.2 DG DN Art
- ✓
Control ring
Only 50mm F1.2 DG DN Art supports it
- ✓
Custom function button
Only 50mm F1.2 DG DN Art supports it
- ✓
Max aperture (Wide)
f/1.2 vs f/1.4 — lower is better
- ✓
Max aperture (Tele)
f/1.2 vs f/1.4 — lower is better
- ✓
Diameter
81 mm vs 86 mm — lower is better
Shared specifications
Min focus distance
Both 30 cm
Max magnification
Both 0.15 ×
Internal focus
Both support internal focus
Weather sealing
Both support weather sealing
Pros & cons at a glance
Editorially curated highlights and trade-offs.
20mm F1.4 DG DN Art
Pros
- ✓Bright f/1.4 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
- ✓Lightweight design easy to carry all day
Cons
- –Third-party or older alternatives may offer better value
50mm F1.2 DG DN Art
Pros
- ✓Bright f/1.2 aperture for low light and subject separation
- ✓Prime design typically delivers strong sharpness and lighter weight
- ✓Weather-sealed construction for outdoor shooting
Cons
- –Relatively heavy for extended handheld use
- –Third-party or older alternatives may offer better value
Decided which one is right for you?
Compare live prices for the 20mm F1.4 DG DN Art and 50mm F1.2 DG DN Art at major authorized retailers.
Sigma 20mm F1.4 DG DN Art
Sigma 50mm F1.2 DG DN Art
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Full specifications
✓ = category winner
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.