Size comparison between the new Sony RX1rIII, A7cr, FujiFilm GFX100RF and X100VI and the Leica Q3

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Sony RX1rIII preorders at BHphoto, Amazon, Adorama, Fotokoch, Fotoerhardt, Calumet, WexUK.

Thanks to CameraSize we can now compare the new Sony RX1rIII size with the competition. Some claim that the Sony A7cR is a better alternative to the new RX1rIII. However, if you want the most compact full-frame camera, you can’t ignore the fact that the RX with its 35 mm lens and 2.0 aperture is much smaller than the A7cr with its lens attached:

Sony RX1rIIII vs A7cR with Zeiss 35mm f/2.8 lens (1 stop slower!) and the Sony 35mm f/1.8 (1/3 of stop faster)

The only similar E-mount lens is the Sigma 35mm f/2.0 which is quite a big longer.

The RX1rIII is just as thick with lens as the A7cR with the grip.

Now let’s compare the camera with the FujiFilm X100VI:

The Fujifilm is taller and wider but the lens si much smaller. But don’t get fooled, the Fujifilm uses a much smaller APS-C sensor and the lens is a f/3,1 equivalent in Full Frame terms. This means it has much less light gathering capability.

Here is a comparison with the Leica Q3:

The Leica is much bigger with the only advantage of using a faster f/1.7 lens.

And here is a comparison with the Fujifilm GFX100RF:

Where the GFX100RF stands out is with the use of a compact lens (although the body itself is thicker). But also in that case they use a f/3.1 Full Frame equivalent lens only).

Wrap up:
All things considered there is no getting around that in terms of size and weight(!) the Sony RX1rIII is the smallest Full Frame camera+lens combo you can get. It is a an expensive niche camera with some “missing” features like IBIS. But there is value in a camera like this that you can easily carry with you all the time!

Sony RX1rIII preorders at BHphoto, Amazon, Adorama, Fotokoch, Fotoerhardt, Calumet, WexUK.

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Sony RX1rIII youtubers reaction

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Sony RX1rIII preorders at BHphoto, Amazon, Adorama, Fotokoch, Fotoerhardt, Calumet, WexUK.

Some good and some negative reactions from the youtuber community. But keep in mind that none had the camera in hand for testing. And I think some of them didn’t appreciate enough the fact that this is a niche camera with a unique capability: it’s way more compact than any other Full Frame camera+lens you can buy. The Sony A7cR plus some pancake lens might be cheaper and technically superior. But it is also a lot bigger!

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Smarter Denoising, GPU Boost & Faster Exports – Aiarty Video Enhancer Update + Special Offer

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Aiarty Video Enhancer has just rolled out a major update—bringing expanded GPU support across more devices, faster performance, and smarter denoising. It is easy to upscale, deblur, denoise, and enhance your footage with natural, texture-preserving cleanups and pro-level results — all processed locally, offline.

Key Updates:

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All video enhancement is performed locally on your device. This means your footage never gets uploaded to the cloud—ideal for sensitive content, remote work, or creators who prefer to keep their data private.

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AI Frame Interpolation up to 120FPS

Turn choppy or low-frame-rate footage into smooth, cinematic playback. Aiarty can generate new frames using AI, boosting video up to 90fps, 120fps, or even higher—perfect for creating slow-motion sequences or enhancing older 30fps videos.

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Remove wind noise, microphone hums, and background disturbances. Enhance vocals for clearer and more professional-sounding audio.

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Trim video length, rotate, crop, or flip footage before enhancing. Easily prep clips for YouTube, Instagram, or TikTok with built-in aspect ratio presets.

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Whether you’re:

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Aiarty gives you pro-grade results with no steep learning curve.
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earn more or try it free at: aiarty.com.

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PetaPixel thoughts on the new Sony RX1rIII

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Their thoughts in short:

  • The upgrades—better autofocus, battery, creative profiles, and high-res sensor—are welcome but incremental.
  • Downsides include the high price (over $5,000 before accessories), no lens redesign to match the higher resolution, no articulating screen, no image stabilization, and a dated EVF.
  • The camera remains extremely compact and pocketable, which sets it apart from rivals like the Leica Q3 or Fujifilm GFX100R.
  • Sony seems to have revived the line to tap into the growing market for premium, soulful compacts like the Q3 and X100VI.
  • Reviewers question whether the dated lens can resolve well enough for the 61MP sensor and whether it competes on value vs. an a7CR with a 35mm lens.

Sony RX1rIII preorders at BHphoto, Amazon, Adorama, Fotokoch, Fotoerhardt, Calumet, WexUK.

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