PetaPixel: Which High-Resolution Full-Frame Camera Has the Best Sensor?

Chris tested the four High Res cameras from each company. That’s what he thinks about them:

• At base ISO, this model resolved slightly less detail than the other cameras, though the difference is very minor.
• At higher ISOs (above 5000), it applies aggressive baked-in noise reduction to the RAW files, resulting in cleaner images but a noticeable loss of fine detail.
• It has the slowest readout speed of the group at around 37ms, which can result in more rolling shutter distortion when using the electronic shutter.
• However, its in-camera high-resolution multi-shot mode is a notable feature that works effectively when shooting on a tripod.

• Thanks to its higher resolution, it offers a noticeable improvement in overall detail, making it highly effective for heavy cropping or large-scale printing.
• It showed strong dynamic range and high-ISO performance, which is attributed to image-stacking technology and the noise advantages of having more pixels at equivalent viewing distances.
• Its readout speed has improved significantly over previous generations to around 19–20ms, though some rolling shutter can still be observed in fast-action scenarios.

• Its overall sharpness and detail are comparable with the Nikon Z8.
• While it uses baked-in noise reduction in its RAW files, this sensor handles it well, preserving detail while keeping images clean at higher ISOs.
• Equipped with a stacked sensor, it boasts a very fast readout speed of around 6 to 6.5ms, making rolling shutter virtually non-existent and making the electronic shutter highly practical for high-speed action.

• Like the Canon, it delivers strong sharpness and detail, but produces slightly cleaner shadow details and smoother blacks when shooting at high ISOs.
• Featuring a fast readout speed of under 4ms, it allows users to shoot fast action and sports using the electronic-only shutter without worrying about rolling shutter distortion.
• The sensor’s balance of speed, dynamic range, and clean image quality remains a solid asset for shooters.

So who wins?

• For Raw Sensor Performance (Detail, Dynamic Range, and ISO): The Sony a7R VI is the clear top performer. It is favored for its high 66-megapixel resolution, which provides unmatched cropping flexibility, and its class-leading dynamic range (greatly aided by its dual-exposure image stacking).
• For Speed, Wildlife, and Action: The Nikon Z8 takes the crown. Its sensor scanning speed of under 4ms is so fast that it completely eliminates the need for a mechanical shutter, allowing you to capture high-speed action with zero rolling shutter issues.
• For the Best All-in-One Hybrid Package: The Canon EOS R5 Mark II is highly praised as the most versatile option. It beautifully splits the difference by combining excellent 45-megapixel detail, strong high-ISO noise control, and a fast 6ms stacked sensor that enables incredibly high burst rates with minimal rolling shutter.