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A77 flash overexposure

Topic started on Jun 10, 2012 9:38 PM , last reply on Nov 12, 2012 12:20 PM

in Cameras and Photo Frames > Alpha & NEX
mikeyp2000 77 posts since
Dec 15, 2011

I was wondering if Sony have any updates for us on a77 flash overexposure issues.  A quick visit to dpreview Sony forums will find many many a77 users have similar problems.

 

To get a decent flash exposure, flash exposure compensation needs to be set to -.7 to -1.0.   This is true for the built in flash or any Sony external flash, either for direct or bounced. 

 

My old a700 and a55 used to expose perfectly with flash exposure compensation set to 0.

 

Outdoors using the hvl-f58 or f-42 flash to fill in shadows on bright sunny days, I now need to use -2.3 to -2.7 flash exposure compensation where the a700 and a55 would need -1.7 to -2 for a natural fill flash. 

 

So the problem for lots of people seems to be that they can get exposures that seem ok but the flash settings required are a bit unnatural, as if the a77 flash exposure scale is -.7 to -1 out of sync with people's expectations.

 

Is there any knowledge in Sony about this?


  • blaireau_photo 1,269 posts since
    Jun 15, 2011
    Written on Jun 3, 2012 12:55 AM

    Hi mikeyp2000

     

    I am discussing this with a contact of mine and I will let you know their thoughts (just double checking a couple of things first).

     

    Thanks,

     

    Simon


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  • blaireau_photo 1,269 posts since
    Jun 15, 2011
    Written on Jun 3, 2012 11:10 PM

    Hello again

     

    As far as I am aware, this issue with the flash is something that has been advertised as 'rectified' by a previous firmware update so please could you confirm if you have installed the latest version from here (Version 1.5):

     

    http://www.sony.co.uk/support/en/product/SLT-A77/updates

     

    If you already have this installed, I will need to highlight this to customer support within Sony to see why the firmware update hasn't solved this.

     

    Thanks,

     

    Simon


    • Reply
  • blaireau_photo 1,269 posts since
    Jun 15, 2011
    Written on Jun 10, 2012 9:35 PM

    Hello again

     

    Apologies for not getting back in touch sooner - I have been trying to verify some information about whether this is something that should have been rectified by the last firmware update - further apologies for the slight typo

     

    I have now highlighted this thread to technical support at Sony to see if this is definitely something that should have been fixed in the update and if this is indeed the case, I can advise further.

     

    Thanks,

     

    Simon


    • Reply
  • stchurc49 2 posts since
    Apr 26, 2012
    Written on Jun 12, 2012 2:08 PM

    Hello my A77 (firmware 1.0.5) is suffering from chronic overexposure too.

     

    I have tried using with both my Sony F42 and Minolta 5600 HS(D) but the exposure is very erratic. I've used with ADI and Pre-flash but the flash is far too unreliable exposing anywhere between +0.5 - +2.

     

    I have no problems when using them on my A700 or my Minolta film bodies.

     

    It's got to the point where I'm using the A77 as an available light only camera and my A700 if flash is required. I'm not exactly happy about this considering the sum I spent on my A77.

     

    Regards

    Steve


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  • cmosse 312 posts since
    Feb 24, 2012
    Written on Jun 12, 2012 6:47 PM

    Dear Michael

    regarding flash exposure of A65/A77 it took me a while to find out how the camera works and what settings will suit better for certain shooting conditions.

    Generally I found out that the flash indeed is set to a somewhat higher level compared what I was used from A55 or even the old Minolta 7D.

    One clue to understanding is the way the A65/A77 try to balance ambient/natural light with the flash light. It

    seems that the camera and its exposure algorithms are setup up to gain more of the ambient light, so that

    parts of the scene which are not reached by the flash are not underexposed, which could happen with A55. In this regard I have found flash exposure of A65/A77 indoors (with poor lighting) better most of the times than on previous models.

    When using A65/A77 as pure fill in flash outdoors (brighten up shadows) it seems however that the new algorithm produces images with less balanced results, in fact the parts which are lit up by the flash seem to be overexposed and I too end up  using flash compensation.

    On close inspection of the images however I found out that most of the images which seems too bright are not overexposed in a technical aspect (burned out highlights which can not be recovered) but just very very bright. Too  bright however to result in a natural looking fill flash image. So what I do now is to make sure I use the following settings for outdoor fill flash work:

     

    - set ISO to low values, avoid high settings (please note that there can be situations where the flash output

    already has reached its lowest possible setting and therefore flash overexposure will happen. E.g. when using F2, ISO1600 and 2m distance required GN would be 1 - which is not available)

     

    - enable High Speed flash (custom setting of the flash)

     

    - use flash exposure compensation

     

    - in addition to this basic settings I also found out that using a flash diffuser will give me best results (set

    metering to TTL instead of ADI)

     

    I have attached a comparison of a basic setup:

    from left to right (A65 using HVL-F58 as external flash, P-mode, ISO 200):

    0 flash compensation, -1 flash comepnsation, -0.7 flash compensation + diffuser

     

    For my taste the one with the diffuser looks best, other might even prefer the "paparazzi" style harsh flash of the standard setting.

    For critical exposure I always use RAW format as it gives the opportunity to adjust exposure to a large degree in post processing. The RAW files from Sony contain enough headroom to enable recover of highlights even from flash images which seem to be overexposed.

    I hope this hints are helpful for you.

     

    flash exposure setting fill flash outdoor.jpg

     

    Message was edited by: cmosse

     


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  • blaireau_photo 1,269 posts since
    Jun 15, 2011
    Written on Jun 12, 2012 6:54 PM

    Hello again

     

    Thanks for confirming also that you are definitely running the latest firmware 1.05 from here:

     

    http://www.sony.co.uk/support/en/product/SLT-A77V/downloads/FW_A77_V105_WIN

     

    Many thanks also to cmosse for the comprehensive hints and tips - please let us all know how you get on.

     

    Simon


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  • dahanse66 4 posts since
    Jun 27, 2012
    Written on Jun 27, 2012 6:51 AM

    Hi Mike,

    Any News? World be very interesting if there is a solution. I Share the same Problem...

     

    Thanks and Nice Day!

     

    Daniel


    • Reply
  • blaireau_photo 1,269 posts since
    Jun 15, 2011
    Written on Aug 6, 2012 11:36 AM

    Hello again everyone

     

    I have just had some further feedback from customer support at Sony relating to outdoor flash use and I wanted to summarise this here.

     

    Set ISO to low values, avoid high settings (please note that there can be situations where the flash output already has reached its lowest possible setting and therefore flash overexposure will happen. E.g. when using F2, ISO1600 and 2m distance required GN would be 1 - which is not available).


    Enable High Speed flash (custom setting of the flash).

     

    Use flash exposure compensation if necessary.

     

    In addition to these basic settings use of a flash diffuser can also enhance flash illumination results (when using an diffuser metering has to to be set to TTL instead of ADI).

     

    For critical exposure always use RAW format as it gives the opportunity to adjust exposure to a large degree in post processing. The RAW files from Sony contain enough headroom to enable recover of highlights even from flash images which seem to be overexposed.

     

    Thanks,

     

    Simon


    • Reply
  • gbloncourt 1 posts since
    Aug 13, 2012
    Written on Aug 13, 2012 2:39 PM

    Hello All,

     

    I have been reporting this issue, along with many other, since December 2011.  I still don't get it, how come Sony cannot fix it.  Simon and Cmosse, thank you for the "WORKAROUNDS", we know them already, some are even on Gary Friedman's book.

     

    WE DON'T NEED WORKAROUNDS, WE NEED THE ISSUE TO BE FIXED ONCE AND FOR ALL.

     

    Let me resume the issue again:

    At ISO 640 and above, using P, A, S, or M, either in TTL or ADI, the sony a77 erratically overexposes while using the onboard flash or Sony External flashes.

     

    The last firmware 1.05 didn't fix it ...

     

    Cheers

     

    Message was edited by: gbloncourt

     


    • Reply
  • muhlstein 2 posts since
    Aug 17, 2012
    Written on Aug 17, 2012 1:56 PM

    I use my Minolta 5600 HS D flash with my A700 camera: no problem at all. I use the same flash with my A77 camera and my pictures are overexposed.
    My problem is that the overexposure is not consistent. Sometimes a negative compensation of -0,7 is sufficient and sometimes a compensation of -3 is not!
    I would like to know if the problem would disappear, should I buy and use a new HVL-F58AM Sony flash. I would very much appreciate if people using the HVL-F58AM Sony flash and the A77 would bother to write two lines about their experiences. Many thanks in advance.

    Micheyp2000's post does not make me feel very optimistic...


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