Sony Alpha A7R IV Summary
Sony Alpha A7R IV Assessment
The Sony A7R IV is the latest high-resolution flagship mirrorless camera from its manufacturer. Based on the same Full-Frame E-mount platform as the A7R III, this new model offers a huge jump in resolution to 61 MP from 42, while maintaining the same 10 FPS maximum continuous drive and most features.
With a state-of-the-art 5-axis image-stabilization system, the A7R IV can capture very detailed images using low shutter-speeds that are needed to extract the best image quality from its 61 MP sensor. At low-to-medium ISO, image-quality is stunning with low image-noise and a very large dynamic-range. High ISO levels remain usable for reduced print sizes which are still quite large.
Speed of the A7R IV is somewhat mixed. Both the shutter-lag and blackout are very quick, while the AF system which combines 567-Point Phase-Detection and 425-Area Contrast-Detection can focus extremely quickly but also slows down at small apertures. Many controls act immediately but numerous features react slower than usual. This is not a camera designed for speed, mostly due to the high throughput required by its ultra-high resolution.
The A7R IV has probably the best EVF experience on the market. Its ultra-sharp 5.8 MP 0.5" EVF with large 0.78X magnification and 100% coverage shows an Exposure-Priority preview that is a pleasure to use. It can show critical focus with a number of assist options and is equipped with an essential Eye-Start Sensor.
There are triple control-dials, plenty of customizable buttons and a tilting EVF on the sturdy weatherproof body of this mirrorless. The camera is relatively compact, close in size to an APS-C DSLR which means it packs a lot of resolution and image-quality for its size. Where there is room for improvement is in the user-interface which is both slow and overly complicated. Battery-life is also rather limited yet this is easy to overcome.
Overall, the Sony Alpha A7R is a digital camera that pushes the boundaries of what was previously possible. Its resolution above all else approach is certain to appeal photographers that are looking to make huge prints.
|Ultra high-resolution for a Full-Frame sensor||Image noise starting a medium-level ISO|
|Excellent sharpness||Stopped-down AF|
|Highly effective image-stabilization||Common overexposure of backlit scenes|
|Wide dynamic-range at low-to-medium ISO||Slow user interface locks white writing|
|Conservative metering system||Triple control-dials are underused|
|Highly accurate AF||Modal Custom buttons|
|Mostly fast autofocus||Very complex menus|
|Excelent Realtime Eye-Tracking AF||Overwhelming Picture Profile controls|
|Nicely saturated colors||Video mode restricts AF|
|Above average AWB||Video recording lag|
|Spectacular Exposure-Priority EVF||½ EV steps not fully implemented|
|Nice physical layout||Poor battery-life|
|Solid build quality||Excellent + Excellent +|
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Sony A7R IV Highlights
Sensor-Size: 36 x 24mm
Actual size when viewed at 100 DPI
|61 Megapixels Mirrorless||ISO 50-102400|
|Sony E Mount|
|5-Axis Built-in Stabilization, 5.5-Stop Improvement||Full manual controls, including Manual Focus|
|0.50" Built-in EVF 5.8 Megapixels (0.78X)||Custom white-balance with 2 axis fine-tuning|
|Automatic Eye-Start sensor||Spot-Metering|
|Weatherproof||Hot-Shoe & Sync-Port|
|Built-in Dust Reduction||Stereo audio input|
|10 FPS Drive, 68 Images||Lithium-Ion Battery|
|3840x2160 @ 30 FPS Video Recording||Secure Digital Extended Capacity x 2|
|3" LCD 1.4 Megapixels|
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