Sony's "α 7IV" is a versatile mirrorless camera with excellent autofocus function.

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PHOTOGRAPH:SONY

Sony's latest full-size mirrorless camera, the α 7IV, is one of the best mirrorless cameras on the market for beginners. Indeed, there are cameras with higher resolution sensors, and the α 7IV lacks some of the animation features of high-end models. However, it is difficult to find more products for full-wheel cameras that can take photos and animations correctly. The modular action camera "DJI Action2" is ultra-light, at 56g, but one of the pity is that the alpha 7IV carries an image sensor of 33 million pixels, and the unreasonable buffer memory with almost unlimited capacity has been reassembled. Therefore, even uncompressed data in RAW format and JPG format can continue to be filmed until the battery is dead. In addition, the performance of autofocus (AF) is greatly improved, and the function of focusing on the pupil of the subject is also improved. In addition, it also includes a variety of moving image shooting modes, including the Hybrid Log Gamma (HLG) system, which can reproduce moving images on televisions that support HDR.

The new function is in it.

PHOTOGRAPH:SONY

The ontology of α 7IV is not much different from the previous model in appearance. However, the handle is getting bigger, giving the impression that it is heavier than before. This new grip is very similar to the one used in the image creator-oriented model "α 7s III". Although it feels a little more difficult to get than the "α 7R II" of personal belongings, the way of feeling depends on the size of the hand. If possible, it is best to actually hold the confirmation in the nearby store where the treatment is available. Although the body has become larger, the full-size mirrorless cameras introduced so far belong to a smaller category. The operation button on the back is basically the same as the latest models of other α 7 series. The dial also has six multi-controllers and six customizable buttons, which move in four directions, which is also the joystick used to move the AF focus. It is enough to achieve the preferred operation, as long as it is set once from the menu screen. This is a good thing. Because Sony's user interface is still as complex as a labyrinth, the fewer opportunities to use the menu, the better. On the other hand, the new function that needs to be noticed in α 7IV lies in content. Due to the installation of a 30 million-pixel back illumination type CMOS sensor, the resolution is improved, and high-quality photography can be expected even in places with less light. The performance of this new image sensor not only surpasses the "α 7III" with a 24.2 million pixel sensor, but also surpasses the rival Canon's "EOS R6", Nikon's "Z6II" and Panasonic's "LUMIX S1". Even so, the α 7IV is a starter in Sony's mirrorless cameras. In terms of resolution, the "α 7R IV" with a 61 million pixel sensor stands out. In addition, it should be noted that the image sensor of α 7IV is highly likely to be carried on the light "α 7C" successor of the α 7 series. The Alpha 7C pick-up is expected to be available in mid-2022, so those who want small cameras had better wait. Although the image sensor is new, the processor is the same as the processor installed in the "α 7s III" for moving image shooting, thus achieving a wide dynamic range. Like α 7s III, α 7IV has a wide dynamic range of up to 15 stops, so the width of post-processing such as development is greatly expanded. In addition, due to the new processor, the processing speed is faster than the previous model α 7III (Sony's maximum is 8 times). Although there is no α 7III on hand, I can't compare the two planes, but I don't feel the slow movement of α 7IV once.

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