Đánh giá sony alpha a7 mark ii năm 2024
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The Sony Alpha a7 II is an image-stabilized full frame mirrorless camera, the fourth release in Sony's a7 lineup and the follow up the original a7. It uses the same 24-megapixel sensor as its predecessor, and the same Bionz X processor as the rest of the a7 series. Improvements come in the form of 5-axis sensor-based image stabilization, improved AF performance and some overall design tweaks. The controls are laid out in similar fashion to the a7, though the grip, command dials and shutter have been completely redesigned. Show The body of the a7 II is physically larger, and about 25% heavier than the original a7-series cameras. It is also now comprised entirely of magnesium alloy like the a7S; the original a7 and a7R featured a frontplate made out of a composite material. The A7 II uses the same hybrid AF system as the A7 with 117 phase-detect and 25 contrast points. Sony claims AF has been improved about 30% over its predecessor thanks to algorithm tweaks, and tracking has been improved 1.5x. Sony a7 II key features
Like the a7S, the a7 II has the ability to record in the XAVC S codec, which offers a 50MBps bit rate at 1080/60p (as well as 1080/30p and 1080/24p). Recording in AVCHD and MP4 also remain an option. The a7 II retains the 3" tilting LCD of its predecessor, but with an increase in resolution. It offers 1.23 millions dots in a 3:2 aspect ratio, and can be tilted upward 107 degrees and downward 41 degrees. The electronic viewfinder also remains unchanged, and uses 2.3 million dots for 100% accuracy and .71x magnification. It is extremely bright and detailed. Here's how the a7 II fits into the current Sony a7 lineup: Sony a7 II Sony a7 Sony a7R Sony a7S Sensor 24MP full-frame 24MP full-frame 36MP full-frame 12MP full-frame Image Stabilization In-body In-lens only In-lens only In-lens only ISO Range (Stills) Standard / Expanded 100 - 25,600 50 - 25,600 100 - 25,600 50 - 25,600 100 - 25,600 50 - 25,600 100-102,400 50-409,600 Continuous Shooting 5 fps 5 fps 4 fps 5 fps AF system Hybrid with 117 phase detect and 25 contrast detect points Hybrid with 117 phase detect and 25 contrast detect points Contrast AF with 25 points Contrast AF with 25 points Front panel construction Magnesium alloy Composite Magnesium alloy Magnesium alloy Optical low pass filter Yes Yes No Yes Weight w/ battery 600 g 474 g 465 g 489 g Launch price $1,700 body only $1,700 body only $2,300 body only $2,500 body only Image StabilizationThe Sony a7 II is the fourth full frame ILC to feature in-camera image stabilization, (the three before it were the Sony a900, a850 and a99). The IS system in the a7 II works by compensating for movements along 5 different axis, X and Y as well as pitch, yaw and roll. When shooting with Sony FE lenses that are already stabilized, denoted by 'OSS' on the lens, the a7 II will use both the sensor-based and lens-based IS together, to get the optimal image stabilized performance. The effects of image stabilization can be seen in a live preview when looking through the EVF or LCD. The great thing about sensor-based IS in a camera like the a7 II is the realm of possibilities it opens up for third-party, and adapted lens users. Ergonomic TweaksTo compensate for the increased weight of the a7 II, the size and depth of the grip has been increased, resulting in a very comfortable camera to hold. The front and rear facing control dials have been substantially shrunken down and recessed into the camera body, making it nearly impossible to accidentally nudge them without knowing it, a frequent complaint of a7 users. The shutter button has also moved from the top of the camera body, to the top of the grip itself, and is now angled slightly downward. Its diameter has been increased slightly over that of the original a7. An addition custom function button has also been added to the top plate of the camera body. Pricing and Kit optionsThe Sony Alpha 7 II will be available, body only, for $1,700 and as a kit with the 28-70mm f/3.5-5.6 OSS lens for $2000. It's worth noting that the Sony a7 II does not ship with a proper battery charger, instead it comes with a Micro USB cable and the AC-UUD11 AC Battery Charging Adapter (a USB to AC converter). It also ships with an eyepiece cup, shoulder strap and one NP-FW50 Lithium-Ion battery. You may also likeMore about gear in this articleSony Japan has posted a notice on its website confirming that November 19, 2021 was the last day it accepted orders for its a7 II series, a6400 series and a6100 (black) camera systems, due to supply chain constraints. The Nikon Z5 is clearly targeted at the same photographers at Canon's EOS RP. But its price will also see it have to square up against Sony's a7 Mark II. How does it fare? Sony has released updates for a range of cameras that address stability issues, provide support for the new 100-400mm F4.5-5.6 lens and add several new functions. The Sony a9 is here and it's likely to make a lot of sports photographers curious about switching to Sony. But what's the actual cost of switching if you're a pro? Read more A minor firmware update for the Sony a7 II improves exposure when flash is used. Read more Latest sample galleriesLatest in-depth reviewsThe fourth camera in Leica's SL series of full-frame mirrorless cameras sees the 60MP BSI sensor from the Q3 and M11 models arrive with a significant interface redesign. The Fujifilm X100VI is the sixth iteration of Fujifilm's classically-styled large sensor compact. A 40MP X-Trans sensor, in-body stabilization and 6.2K video are among the updates. The Nikon Zf is a 24MP full-frame mirrorless camera with classic looks that brings significant improvements to Nikon's mid-price cameras. We just shot a sample reel to get a better feel for its video features and have added our impressions to the review. This $250 electronic lens adapter is perfect for Nikon Z-mount curious Sony shooters — shhh, we won’t tell anyone. Sony updates the ZV-1, giving the vlog-centric compact camera a 18-50mm equivalent F1.8-4.0 lens that's now wide enough for less cramped selfie mode videos. Latest buying guidesWhat's the best camera for travel? Good travel cameras should be small, versatile, and offer good image quality. In this buying guide we've rounded-up several great cameras for travel and recommended the best. If you want a compact camera that produces great quality photos without the hassle of changing lenses, there are plenty of choices available for every budget. Read on to find out which portable enthusiast compacts are our favorites. 'What's the best mirrorless camera?' We're glad you asked. What’s the best camera for around $2000? This price point gives you access to some of the most all-round capable cameras available. Excellent image quality, powerful autofocus and great looking video are the least you can expect. We've picked the models that really stand out. Above $2500 cameras tend to become increasingly specialized, making it difficult to select a 'best' option. We case our eye over the options costing more than $2500 but less than $4000, to find the best all-rounder. |
