Ana içeriğe geç

Neye ihtiyacın var

Bu teardown bir tamir kılavuzu değildir. Sony a7R II cihazınızı onarmak için, servis kılavuzumuzu kullanın.

  1. Sony a7R II Teardown, Sony a7R II Teardown: adım 1, 2 resimden 1. Sony a7R II Teardown, Sony a7R II Teardown: adım 1, 2 resimden 2.
    • The a7R II has landed! Sony's much-ballyhooed second go at a pro-grade, mirrorless, interchangeable-lens camera has our full attention. Let's see what new tech makes this camera shine:

    • 42.4 MP Exmor R CMOS back-illuminated sensor

    • BIONZ X image processor

    • 5-axis in-body optical image stabilization

    • 4K video recording

    • Fast hybrid AF system with 399 focus points

    • NFC and Wi-Fi connectivity

    • The specs alone are enough to give us itchy shutter fingers—but, first things first. It's teardown time.

  2. Sony a7R II Teardown: adım 2, 2 resimden 1. Sony a7R II Teardown: adım 2, 2 resimden 2.
    • The rear of the camera is adorned with an articulating 3 inch LCD. This is a TFT LCD display with 1,228,800 dots. Dots? What are dots? TIL a dot is (usually) a third of a pixel.

    • Since nobody lists a measurement other than 3 inches for this display, we busted out the calipers and calculator. At 2.5 " x 1.75", and converting from dots to pixels, we came up with around 270 ppi.

    • In short, less than an iPhone (326 for the iPhone 6), but certainly high-density. And that's good, considering that no mirror means no optical viewfinding.

    • The left side of the camera body houses plenty of I/O options—an HDMI micro connector, 3.5 mm stereo microphone and headphone terminals, and a micro-USB connector.

  3. Sony a7R II Teardown: adım 3, 2 resimden 1. Sony a7R II Teardown: adım 3, 2 resimden 2.
    • With the body cap off, we catch our first glimpse of the world's first full-frame back-illuminated sensor (BIS) and noiseless shutter.

    • Smile for the lensless camera! We got the basic package, which unfortunately meant no lens included.

    • Despite being a part of the "Alpha" series, the a7R II uses an E-mount system.

    • With an adapter, this alpha can stay true to its alliterative A-mount lenses.

  4. Sony a7R II Teardown: adım 4, 2 resimden 1. Sony a7R II Teardown: adım 4, 2 resimden 2.
    • We find the same NP-FW50 7.2 V, 1020 mAh swappable battery pack as the original a7R and the rest of the Sony Alpha lineup—good news for anyone building a fleet of flagship mirrorless cams.

    • Sony advertises a 290-photo battery life (up to 340 without the electronic viewfinder), a minor increase from the 270-photo limit of last year's model.

    • Sony kindly included not one but two batteries. You can also charge the battery inside the camera (USB adapter included), and even power the camera entirely via USB.

  5. Sony a7R II Teardown: adım 5, 3 resimden 1. Sony a7R II Teardown: adım 5, 3 resimden 2. Sony a7R II Teardown: adım 5, 3 resimden 3.
    • We turn our attention to the JIS screws securing the bottom plate, mouths watering in anticipation of the smörgåsbord of tech beneath...

    • ...And find the tripod mount plate.

    • It may not be glamorous, but the tripod mount slides out with ease, great news repairability. Tripod-happy owners can rest easy.

    • For those of you who were wondering, yes, the a7R II is FCC compliant.

  6. Sony a7R II Teardown: adım 6, 2 resimden 1. Sony a7R II Teardown: adım 6, 2 resimden 2.
    • The bottom panel was a bit of a red herring so we investigate the LCD arm for weak spots.

    • The rear LCD panel is connected by a thin ribbon cable that disappears into the back of the camera body. We'll probably have to deal with that before we can crack open this camera...

    • Luckily, a small door on the back of the display assembly opens the way to a tiny ZIF securing the cable.

    • We allow ourselves a brief detour to investigate the display before delving into the camera body.

  7. Sony a7R II Teardown: adım 7, 3 resimden 1. Sony a7R II Teardown: adım 7, 3 resimden 2. Sony a7R II Teardown: adım 7, 3 resimden 3.
    • Peeling the LCD from the articulating bracket reveals a PCB packed with passives.

    • This little circuit board is probably a breakout board for the LCD, allowing for a thinner cable from the camera.

    • The capacitors probably reduce noise in the display; they're clearly visible as a little cluster of dark spots in this X-ray image, courtesy of our buds at Creative Electron.

    • Display technology is finally close to passing its Turing test: being indistinguishable from the mirror views in high-end cameras. This leap in tech has allowed for the viability of mirrorless cameras like the A7 series.

    • Apple bills these as Retina displays, but since a camera's display has to be much closer to your eye, the pixels have to be that much smaller to seem invisible.

  8. Sony a7R II Teardown: adım 8, 3 resimden 1. Sony a7R II Teardown: adım 8, 3 resimden 2. Sony a7R II Teardown: adım 8, 3 resimden 3.
    • Once we extricate the LCD and its delicate flex cable, the parts start flying.

    • First up are the eyepiece and viewfinder frame. The eyepiece slides off for easy swaps; the viewfinder frame is held in place with a few screws.

    • As a mirrorless camera, the a7R II doesn’t have an optical viewfinder. Instead, the viewfinder uses an XGA (1024 x 768 pixels) OLED screen to provide the user with accurate previews of images.

    • With some careful hunting, we find a few remaining screws hiding in the battery cavity. We're pretty stoked for a chance to use the telescoping driver handle in our Universal Bit Kit.

  9. Sony a7R II Teardown: adım 9, 3 resimden 1. Sony a7R II Teardown: adım 9, 3 resimden 2. Sony a7R II Teardown: adım 9, 3 resimden 3.
    • Now that the viewfinder frame and LCD panel have been removed, the rear housing pops right off.

    • All of the button's switches are mounted to internal components instead of the frame—so there aren't any delicate cables to worry about.

    • After disconnecting a single cable, we tease out that very mounting frame and the rear button assembly attached to it.

    • Next off is the multi-format card reader. It comes quietly.

    • We're secretly hoping this camera plays Nintendo DS games.

  10. Sony a7R II Teardown: adım 10, 3 resimden 1. Sony a7R II Teardown: adım 10, 3 resimden 2. Sony a7R II Teardown: adım 10, 3 resimden 3.
    • With the rear housing and button assembly removed, the motherboard shield comes out with very little resistance.

    • Getting our first clear view of the motherboard, we set to work disconnecting every ribbon cable created since the dawn of time.

    • Process note: We managed to get the motherboard out at this point, but we're pretty sure that's not as Sony intended. Had they deigned to give us a manual we would have known to skip ahead a few steps.

  11. Sony a7R II Teardown: adım 11, 3 resimden 1. Sony a7R II Teardown: adım 11, 3 resimden 2. Sony a7R II Teardown: adım 11, 3 resimden 3.
    • We hoist the motherboard out for inspection, finding:

    • Sony CXD90027GF SoC

    • Micron Technology 5FA98 JWB39 eMCP

    • SK Hynix H5TC4G63CFR 4 Gb DDR3L SDRAM

    • And on the reverse side:

    • Sony CXD4236-1GG, likely a newer version of the CXD4236GG image processor

    • Fujitsu MB9AF004 32-bit ARM Cortex-M3 processor

    • Murata KM5601002

  12. Sony a7R II Teardown: adım 12, 3 resimden 1. Sony a7R II Teardown: adım 12, 3 resimden 2. Sony a7R II Teardown: adım 12, 3 resimden 3.
    • This is the part where we get a grip, a camera grip that is.

    • An access port allows us to remove the final screw securing the front grip to the body.

    • Camera brand-fans live and die by their adjustment wheels. The grip features the forward spinner and shutter button, as well as the Wi-Fi antenna.

  13. Sony a7R II Teardown: adım 13, 3 resimden 1. Sony a7R II Teardown: adım 13, 3 resimden 2. Sony a7R II Teardown: adım 13, 3 resimden 3.
    • We find a trio of boards hiding behind the grip, supporting a couple of chips and what looks like an NFC antenna.

    • Perfect for Sony's Playmemories Mobile application, the NFC chip will allow interactions between smartphones the a7R II when Wi-Fi is not an option.

    • Funny how our smartphones are becoming more like cameras and our cameras are becoming more like smartphones, huh?

  14. Sony a7R II Teardown: adım 14, 3 resimden 1. Sony a7R II Teardown: adım 14, 3 resimden 2. Sony a7R II Teardown: adım 14, 3 resimden 3.
    • Back to the viewfinder—turns out we can pull it straight out of its cavity. With its frame previously dispatched, it was only held in place by a gummy thermal pad.

    • Why the thermal pad? Might have something to do with the 1.3 cm XGA OLED. With 1024 x 768 pixels in half an inch, that's 2,560 ppi. Wowza.

    • After removing the OLED, we take a peek through the lens assembly. A set of four optical lenses improve the field of view while minimizing distortion.

    • The lens assembly even works as a standalone upside-down-maker! Aren't optics cool? That logo sure is.

  15. Sony a7R II Teardown: adım 15, 3 resimden 1. Sony a7R II Teardown: adım 15, 3 resimden 2. Sony a7R II Teardown: adım 15, 3 resimden 3.
    • Hats off to you Sony! You've got our teardown engineer tired, but not beat. The upper case assembly pops off and steps aside for a glimpse at the goods.

    • Eager to get our first look at the new Exmor R CMOS sensor, we extricate the entire sensor assembly from the camera. The rest of the body feels like an empty husk without the hulking sensor and stabilization cradle.

    • For more information on the a7R II's sensor-shift stabilization mechanism, continue scrolling.

    • In today's episode of iFixit Teardown Cinema, we see the sensor-shift stabilization mechanism in action.

    • That's a pretty smooth action there. Probably powered by magnets. Or miracles. Most likely magic. Or unicorns. Most definitely unicorn magic.

    • The CMOS sensor rests on a light tray, floating between two hefty plates.

  16. Sony a7R II Teardown: adım 17, 3 resimden 1. Sony a7R II Teardown: adım 17, 3 resimden 2. Sony a7R II Teardown: adım 17, 3 resimden 3.
    • A quick detour before we proceed to the magnets: we pluck the a7R II's 42.4 MP image sensor from the stabilization system.

    • With the CMOS sensor in the wild, we get a clearer view of what's been touted as the world's first back-illuminated 35 mm full-frame sensor.

    • According to Sony, the photodiodes on this new sensor are much closer to the on-chip lens than in previous designs, allowing it to collect light more efficiently.

    • The square hole in the sensor's PCB also hints at a tricky assembly process—it's likely a cutout used to accommodate the vacuum nozzle that holds the sensor during assembly, as evidenced by the small patch of scratches at the center of the cutout. A peek with the X-ray reveals the array of solder balls that sandwiches the whole thing together when it's done.

  17. Sony a7R II Teardown: adım 18, 3 resimden 1. Sony a7R II Teardown: adım 18, 3 resimden 2. Sony a7R II Teardown: adım 18, 3 resimden 3.
    • Is that a Force Touch trackpad? No, it's an exposed view of the a7R II's sensor-shift stabilization hardware. Sony's marketing team named this the 5-axis SteadyShot. Fancy.

    • The central tray of the stabilizer holds the image sensor, and is home to three electromagnets, each a component of a voice coil, an electromechanical device used for incredibly fine positioning.

    • Voice coils are also found in platter hard drives, controlling the read/write arm.

    • These coils live in the magnetic fields of their permanent magnet buddies—which means slight variations in power to the three coils generates forces in a variety of directions. Enough variety to adjust the sensor on five distinct axes. Not a small feat for a full-frame camera.

  18. Sony a7R II Teardown: adım 19, 3 resimden 1. Sony a7R II Teardown: adım 19, 3 resimden 2. Sony a7R II Teardown: adım 19, 3 resimden 3.
    • We've struck our sensor and magnet gold, and now it's time to clean up and let the teardown team get some sleep. It's been a long day!

    • After removing the battery cavity, not much remains—the noiseless shutter mechanism, a few stray cables, and on the front of the body a spring contact leading to that Wi-Fi antenna we found earlier.

    • Gazing at this once mighty feat of modern engineering, we can't help but wonder one thing: how the heck are we gonna put this thing back together? Answer: most likely unicorn magic.

  19. Sony a7R II Teardown: adım 20, 3 resimden 1. Sony a7R II Teardown: adım 20, 3 resimden 2. Sony a7R II Teardown: adım 20, 3 resimden 3.
    • A7R II Repairability Score: 4 out of 10 (10 is easiest to repair).

    • The battery can be easily replaced without tools.

    • The tripod mount and viewfinder can be replaced without disassembling the camera body.

    • While very difficult, the rear LCD panel can also be removed without disassembling the camera body.

    • Accessing anything inside the camera requires removing the complex rear LCD panel first.

    • Internal components are very intricately organized; repair without a service manual would be very difficult.

    • Lastly, a hearty shout-out to our friends at Creative Electron for their X-ray imaging wizardry. Thanks guys!

Evan Noronha

Üyelik tarihi: 02/05/15

223.223 İtibar

168 adet Kılavuz yazıldı

35 Yorum

Did you find any seals for weather proofing?

jtorral - Yanıt

no weathersealing found…

Jo Mariën -

Looks like the extra weight over A7 goes to the SR mechanism and the resulting bulkier hull. Looks like a lot copper cooling stuffs also involved, must due to processing pressure from the high pixel count. Wondering if Canon 5Ds has even heat pipes built-in...

Azure - Yanıt

Yeah, Wondering also about weather sealing.

Tarek Ahmad - Yanıt

+1 to knowing more about the weather sealing

Sean Oh - Yanıt

Yorum Ekle

İstatistikleri Görüntüle:

Son 24 Saat: 10

Son 7 gün: 88

Son 30 gün: 406

Her zaman: 118,063