Close Menu
    EOSHD Shooter’s Guides
    • New EOSHD Pro Color 5 is out now, for all Sony mirrorless cameras including the A7S III!
    • EOSHD C-LOG and Film Simulation Picture Profiles for Canon
    X (Twitter) Instagram YouTube
    X (Twitter) Instagram YouTube
    EOSHD.com – Filmmaking Gear and Camera Reviews
    STORE
    • Forum
    • YouTube
    • Instagram
    • 𝕏
    • PRO COLOR 5
    • EOSHD C-LOG
    • Store
      • The EOSHD 5D Mark III 3.5K RAW Shooter’s Guide
      • The EOSHD 50D Raw Shooter’s Guide
      • The EOSHD Anamorphic Shooter’s Guide 2nd Edition
      • The EOSHD Sony A7 Series Shooter’s Guide to Full Frame Lenses
      • The EOSHD Panasonic GH4 Shooter’s Guide
      • The EOSHD Panasonic GH3 Shooter’s Guide
      • The EOSHD Panasonic GH2 Shooter’s Guide
      • The EOSHD Sony A7R II Setup Guide
      • The EOSHD Samsung NX1 Setup Guide
    • Cart
    • Contact
    • More
      • EOSHD Reviews
      • EOSHD Cinematography
      • About EOSHD / Andrew Reid
      • Blog RSS Feed
      • Facebook
    EOSHD.com – Filmmaking Gear and Camera Reviews
    You are at:Home » A real world Sony A7S rolling shutter test vs the Blackmagic Pocket Cinema Camera

    A real world Sony A7S rolling shutter test vs the Blackmagic Pocket Cinema Camera

    Andrew Reid (EOSHD)By Andrew Reid (EOSHD)July 3, 2014 News 3 Mins Read
    [vimeo]http://www.vimeo.com/99854427[/vimeo]

    Just how is the rolling shutter exactly on the A7S – intolerable or similar to what we’re used to on other DSLRs?

    UPDATE 1:

    Samuel H has added the A7S to his rolling shutter scores sheet over on the DVXUser forum. The time it takes to scan the sensor from top to bottom is calculated by more than one user and an average figure produced. This helps to put a number on the issue and to compare the A7S to other cameras. Here are the results.

    1. GH4 1080p (Micro Four Thirds): 13.7 ms
    2. Scarlet (4K) 14 ms *
    3. RX10 (1″ sensor): 14.8 ms
    4. GH3 (Micro Four Thirds): 15.5 ms
    5. C300 (4K sensor, 1080p image) 16 ms
    6. BMPCC (Super 16mm): 17.8 ms
    7. A7S (APS-C crop mode 1080p): 19.5 ms
    8. 5D Mark III (full frame): 20.5 ms
    9. 7D (APS-C, 1080p): 21ms *
    10. D5200 (APS-C): 22.4 ms
    11. GH4 (4K, 2.3x crop): 22.5 ms
    12. GH1 (1080p, 2.0x crop) 25 ms *
    13. BMCC (2.5K, 2.3x crop): 25.0 ms
    14. 5D Mark II (full frame): 25.9 ms
    15. NEX-5N (APS-C): 29.4 ms
    16. A7S (1080p, full frame): 30.5 ms

    * Not verified

    A7S is ranked below the BMCC, 5D Mark II and NEX 5N at the foot of the list unfortunately.

    Though the scores are for 1080p there’s no reason to think it will be even worse in 4K mode as the sensor is already outputting all pixels in 1080p mode anyway.

    (End of update)

    Rolling shutter is just about the one thing Sony seem to be separating the A7S’s image quality from their pro line of cameras. That and the lack of 10bit internal 4K recording that is.

    So far I am absolutely in love with the image coming from the A7S, from what I have seen put online so far.

    This is one of the best rolling shutter tests I’ve seen so far. Not only are the traditional train shots present… We have lightning too! 🙂

    It really does give you an accurate impression of the problems of handheld shooting and rolling shutter on the A7S.

    So what’s the solution?

    Well a change of shooting style is one obvious solution. Rolling shutter is not a shot breaker for everything and sometimes when it is IS there, you don’t always notice it.

    It’s also something which can be fixed in post. Premiere Pro CC has a rolling shutter fix tool which removes it altogether but introduces a crop to the image. However since the A7S is 4K externally and full frame you have plenty of sensor area and resolution to sacrifice in that crop. Even if it crops to 1.3x that is still 1D C / APS-H rendering of your lens and greater than 3K resolution.

    This is very good news as on a small sensor, or with 1080p, a crop is not really very tolerable. In 4K on full frame, it is.

    At this moment in time, we’ll just have to put up with rolling shutter. It is a necessary consequence of having 4K and a full sensor readout. Much more data to read out from the sensor in a single scan. Any faster and the camera would overheat. The upside is that what we gain from the full pixel readout and 4K is much more of a benefit than the negative of the skew, which is fixable in post anyway.

    a7s rolling shutter test
    Andrew Reid (EOSHD)
    • Website

    British filmmaker and editor of EOSHD. On this blog I share my creative and technical knowledge as I shoot.

    Related Posts

    Camera prices – Have the Japanese taken leave of their senses?

    Read More

    What to expect from Nikon’s first RED mirrorless camera, the Nikon Zr

    Read More

    The Panasonic S1 II pricing is wrong – so is the entire product strategy

    Read More

    EOSHD Pro Color 5 for All Sony cameras

    EOSHD C-LOG and Film Profiles for All Canon DSLRs

    EOSHD Z-LOG for Nikon cameras

    Articles by category
    • Anamorphic
    • Featured
    • Filmmaking
    • Interview
    • Lens
    • News
    • Opinion
    • RAW Video
    • Reviews
    • Rumors
    • Satire/Opinion
    • Shooter's Guides / LUTs / Colour Profiles
    • YouTube
    Blog post archives
    • Instagram
    • Twitter
    • YouTube
    © 2025 Andrew Reid / EOSHD

    Type above and press Enter to search. Press Esc to cancel.