![]() ![]() The a9 only features 25 contrast detection points, so the a7 III outshines its larger and more expensive brother here! This is definitely a huge step forward from the 25 contrast-detect and 117 phase-detect points found in the a7 II.īut don’t let these figures fool you into thinking that the autofocus system is better than that in the a9, it’s just not, but more on this in another article coming soon!ĥ. The a7 III features 693 phase-detection AF points that cover approximately 93% of image area (same as in the a9), plus 425 densely positioned contrast-detection AF points to improve focus. Sony says the AF system is derived from the one in the a9 and performs twice as fast as the one found in the a7 II. The new body along with revised menus should help to make the a7 III much easier to configure and use. Like the a9 and a7R III, the new body is dust and moisture resistant, so it should withstand a rain shower, but it’s most definitely not waterproof. The width and height are the same, but it does go from 2.4″ to 2.9″ in depth to accommodate the larger Z series battery. 7.0 oz / 650g, making it around 51g heavier than its predecessor. The movie record button has also been relocated to near the viewfinder. There’s also now a dedicated AF-On button that can be used for back button focus or customized to your liking, as well as a Protect/Rate button.Ī big plus for many photographers will be the dual SD card slots. So you’ll be pleased to know that the a7 III includes the same AF joystick that makes moving the focus point around easier than ever before. The a7 III inherits a very similar body (but not identical) to the one found on the a7R III and flagship a9. This compares with ISO 50–25600 in the a7 II. Standard ISO range has been extended to ISO 100-51200 (expandable to ISO 50-2048006 for stills), helping to make it a lot more capable in low light situations. The new sensor and image processor also help to give the Sony a7 III up to a 1.5-stop improvement in dynamic range over the a7 II. Start-up is also approximately 40% faster than with the a7 II when the camera is switched on. It now achieves a 5.0-step shutter speed advantage compared with 4.5 steps in the a7 II. The 5-axis image stabilization has also been improved, but just a little. The a7 III like the a7 II does still include an optical low-pass filter (anti-aliasing filter). ![]()
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