Whether you’re tracking sports, birds or cars, the tracking spot will stay tenaciously locked to your subject in most situations. Unless you turn it off, it’ll automatically pick up your subject’s eyes, face or body and track them even if they turn or disappear from frame. Unlike the A7 III, face, eye and body tracking works in all focus modes for animals, birds and people. All of Sony’s new AI tricks add up to make it the easiest to use and most reliable camera I’ve ever tested in that regard. The A7 IV is Sony’s most advanced camera yet when it comes to autofocus. Using the crop mode helps a lot, but then you lose the benefits of a full-frame sensor. Otherwise, you’ll see slanted lines and other artifacts that can be bad enough to ruin shots. If you want to shoot silently in electronic mode, you’ll need to keep the camera steady and your subject can’t move quickly either. If you use CFexpress Type A cards from Sony or ProGrade, you can effectively shoot forever without filling the buffer.Īnother drawback with the A7 IV’s slow sensor readout speeds is rolling shutter. While burst speeds aren’t improved, you can capture more photos at a time, up to 1,000 in the uncompressed RAW format. By comparison though, the Sony A1 can shoot 50-megapixel photos in electronic mode at up to 30 fps, showing the speed benefits of a stacked sensor. That’s still impressive considering the resolution is up nearly 50 percent. As a result, shooting speeds are 10 fps like the A7 III in either mechanical or electronic shutter modes for compressed RAW photos, and drop to 6 fps if you use lossless or uncompressed RAW, as many photographers prefer to do. The new 33-megapixel sensor is back-side illuminated but not stacked like the sensor on the A1, so readout speeds are relatively slow. However, Sony made some compromises that affect performance. Sony’s mirrorless cameras are renowned for their autofocus speeds and AI smarts and the A7 IV is no exception. That’s a feature that first appeared on the EOS R, so thanks for starting that trend, Canon. Finally, the A7 IV can close its mechanical shutter when the camera is turned off, protecting it from dust when you change lenses. It uses Sony’s new NP-FZ100 battery that delivers up to 580 shots on a charge, or about 2 hours of 4K video shooting. Other features include a USB-C port that can power the camera during operation, along with a full-sized HDMI port, thank God. They're also only used in Sony cameras, so they’re relatively hard to find and quite expensive. Type A CFexpress cards aren’t quite as fast as regular CFexpress cards, topping out at 800 MB/s compared to 1,700 MB/s. However, unlike the slots on the A1 and A7S III, it only has a single dual-slot, with the other being SD UHS II only. The A7 IV has a dual-slot card system that supports both SD UHS II and much faster CFexpress Type A cards. That can make manual focus tricky, though the A7 IV has a new feature that can help there – more on that shortly. However, the rear display is smaller and has lower resolution than the one on the R6. The 3.69-million dot EVF is much clearer than the 2.68-million dot one one on the A7 and on par with similarly priced rivals. Overall, though, Sony’s menus are now among the best, and better organized than on Canon’s EOS R6, for example. As with any other modern camera then, it’s time well spent to set up the function menu, custom menus and manual controls to your liking. It has the same well-organized menu system as the A1 and A7S III, though some controls can be a bit tricky to find. That also makes it far more useful as a vlogging camera. The rear touch display can fully articulate and not just tilt out, so it’s much more practical for low-angle shooting in portrait orientation. In one way, however, the A7 IV’s body is a step up from the A1. The lockable exposure compensation dial is the same, but lacks the graphics because it’s designed to be programmable. It lacks certain dials compared to the far more expensive A1, like the shooting mode and autofocus dials. The buttons and dials also generally feel better and more precise, and the joystick is grippier and easier to use. It has similar controls to the A7 III, with the biggest difference being that the record button has moved from the back to an easier-to-access position on top. However, it has picked up some heft and size, weighing in at 699 grams compared to 650 with the AIII. It has the same nice big grip, so you never feel you’re going to drop it, even with a big lens. Sony’s A1, A7S III and A7R IV all had substantial body changes compared to their predecessors, and the A7 IV follows the same script.
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