Kensei Akatsu: My TOP 10 Favorite Sony Lenses that Changed My Life

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I really enjoy Kensei Akatsu’s videos, so I’m taking his list of 10 favorite Sony lenses as an inspiring guide for all of us.

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Battle of the giants: Sony 600 GM vs Sony 400-800 G and Sigma 300-600

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Fstopers had one of the best time ever testing three very different telephoto lenses for the Sony system:

Conclusion: All three lenses offer stellar image quality, but they serve different types of photographers. The Sony 600mm f/4 delivers unmatched sharpness even with a 2x teleconverter, but at a painful $14K price point and poor stabilization. The Sigma 300-600mm f/4 is heavier and limited to 15 fps, yet an excellent bargain at $6,600 with fixed aperture and superb optics. But the biggest surprise is the Sony 400-800mm: for a fraction of the cost, it delivers nearly the same image quality, better stabilization, more zoom range, and excellent usability — making it a true winner for enthusiasts and budget-conscious pros alike.

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Curiosity: Leica Returns to In-House Sensor Development, Hinting at a Shift from Sony

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Dr. Andreas Kaufmann confirms Leica in-house image sensor for future M12 and SL4 cameras
Leica is developing a proprietary in-house image sensor; typical development cycles span about five years.

Leica’s chairman Dr. Andreas Kaufmann confirmed the company is once again developing its own image sensor. After using AMS sensors through the M10 and switching to Sony sensors for the M11 generation, Leica appears set to return to an in-house solution—a process that typically takes around five years and is reportedly already well underway.

Going in-house could give Leica tighter control over color science, microlens designs optimized for rangefinder optics, and greater supply-chain independence. It may also enable feature trade-offs that better match Leica’s priorities for the M and SL systems.It’s notable to see Leica chart its own path while Sony continues to set sensor benchmarks—for example, the partially stacked architecture in the A7V and recent global-shutter advances across the Alpha 9 line. For more context on Sony’s latest camera tech, see our A7V video series coverage, and watch for updates at the Sony CES press conference.It’s likely this new sensor will find its way into future Leica M12 and SL4 cameras.

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