Sigma 135mm F1.4 DG ART on Lumix S5II: Stunning Sharpness, Creamy Bokeh, and Real-World Usability
- caliallstaring
- 25 minutes ago
- 3 min read
The Sigma 135mm F1.4 DG ART has long been regarded as one of the finest portrait lenses ever made, and pairing it with the Panasonic Lumix S5II proves just how well high-end third-party glass can perform on the L-Mount system.
From breathtaking sharpness to smooth bokeh and surprisingly usable handling, this lens delivers professional results without demanding compromises in real-world shooting.
Exceptional Sharpness, Even Wide Open
Sharpness is where the Sigma 135mm F1.4 truly shines. Thanks to its advanced optical design of 17 elements in 13 groups, including FLD and aspherical elements, the lens delivers outstanding detail and contrast.
Even at f/1.4, subjects are rendered with impressive clarity—especially in portrait work where eye detail matters most. Stop it down slightly and the frame becomes incredibly crisp edge-to-edge, making this lens suitable not just for portraits but also fashion, editorial, and fine-art photography.
Creamy, Beautiful Bokeh Thanks to Optical Design
Bokeh is one of the biggest reasons to choose a 135mm f/1.4 lens, and Sigma delivers in a big way. The lens features a 13-blade rounded diaphragm, which helps maintain smooth, circular out-of-focus highlights and gentle transitions from focus to blur.
The long focal length combined with the fast aperture creates stunning subject separation, while the refined optical formula minimizes harsh edges and nervous backgrounds. The result is a creamy, elegant bokeh that elevates portraits straight out of camera.
Manageable Weight — No Monopod Needed
Despite its professional build, the Sigma 135mm F1.4 remains surprisingly usable in the field. Weighing approximately 1,430 g (1.43 kg), it’s significantly more manageable than the Sigma 105mm F1.4, which often requires monopod support for longer sessions.
On the Lumix S5II, the balance feels solid and comfortable, especially when paired with the camera’s excellent in-body image stabilization. This is a lens you can confidently handhold for portrait sessions without fatigue or additional support.
Strong Performance for Backlit Portraits - Sigma 135mm F1.4
Backlit shooting is another area where this lens excels. Whether shooting into the sun or working with rim light, the Sigma 135mm maintains contrast and controls flare impressively well.
Skin tones stay clean, highlights remain controlled, and images retain depth even in challenging lighting. This makes it an excellent choice for golden-hour portraits, environmental shots, and creative outdoor sessions.
Autofocus That Feels Native on the Lumix S5II
Autofocus performance on the Panasonic Lumix S5II is surprisingly confident with this lens. Eye detection and subject tracking are reliable, accurate, and responsive—exactly what you want for portrait work.
Focus transitions feel smooth and natural, and overall performance feels native, not adapted. This is a big win for photographers who want third-party glass without sacrificing speed or reliability.
Final Thoughts
The Sigma 135mm F1.4 DG ART paired with the Panasonic Lumix S5II is a phenomenal combination for portrait photographers. You get:
Incredible sharpness, even at f/1.4
Smooth, creamy bokeh from a 13-blade diaphragm
A manageable weight that doesn’t require a monopod
Excellent backlit performance
Autofocus that feels truly native on L-Mount
If you’re looking for a premium portrait lens that delivers stunning results without overwhelming your shooting experience, the Sigma 135mm F1.4 DG ART is an outstanding choice on the Lumix S5II.
B&H Photos
Sigma 135mm f/1.4 DG Art Lens (L-Mount)
Lumix S5ii
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Sigma 135mm f/1.4 DG Art Lens (L-Mount)
Lumix S5ii