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A77 flash synchronization speed.

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Hidrieus View Drop Down
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Post Options Post Options   Quote Hidrieus Quote  Post ReplyReply Direct Link To This Post Topic: A77 flash synchronization speed.
    Posted: 28 November 2018 at 08:43
I was used to to my A700 where the fastest flash synchronization speed is 1/200sec with SteadyShot on and 1/250sec with Steady Shot off. But I see in my A77 that the synchronization speed can get up to 1/250sec without having to disable SteadyShot. My question is: does the A77 electronically disables SteadyShot when I step from 1/200sec to 1/250sec without indicating it and then re- enables it when I step back to 1/200sec and slower? If the A77 can handle 1/250sec with SteadyShot on, I consider it a major improvement from the A700 in this area.
A700, A550, A580, A77
 



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sybersitizen View Drop Down
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2018 at 17:37
Seems to me that the original restriction was odd. I can't think of any reason why SteadyShot On/Off matters for shutter speed selection between 1/200s and 1/250s.

Regarding whether or not it gets automatically disabled, and at what point, I can't think of any practical test for that either. The only distinctive clue is the sound it makes, which can't be identified at those short shutter speeds.
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stiuskr View Drop Down
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Post Options Post Options   Quote stiuskr Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2018 at 17:45
EXIF data will tell you when it's on or off, myself I'd prefer it off when using flash, same goes with EFSC.
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2018 at 18:51
Originally posted by stiuskr stiuskr wrote:

EXIF data will tell you when it's on or off ...

That's like saying the switch on the camera or the menu page will tell you if it's on or off. None of these indicators exclude the possibility that the camera has actually disabled the function temporarily during the exposure.

One way to arrive at an answer is to do exhaustive testing at 1/250s (or whatever faster shutter speed is in question) and see if the percentage of blurred vs. non-blurred shots conforms to the expectations of the SteadyShot system. If it does, the SS system is presumably active. If it doesn't, it presumably isn't. Even then you wouldn't necessarily know for sure.
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2018 at 19:00
I would think they have to disclose it when it shuts the IBIS off. I am pretty sure it is violation of some consumer laws if they don't.

I am also pretty sure there was a reason in the A700 or else they would not turn it off. What that reason is? Well, I also cannot think of any reason.
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Post Options Post Options   Quote sybersitizen Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2018 at 19:40
Originally posted by addy landzaat addy landzaat wrote:

I would think they have to disclose it when it shuts the IBIS off. I am pretty sure it is violation of some consumer laws if they don't.

That's pretty funny! There is no disclosure about the bit depth being changed in Sony cameras depending on the drive mode, or the anomalies that occur with RAW compression, or the star-eating effect that occurs at or below certain shutter speeds. Such things are only discovered by inquisitive users who conduct careful tests.
 



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addy landzaat View Drop Down
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Post Options Post Options   Quote addy landzaat Quote  Post ReplyReply Direct Link To This Post Posted: 28 November 2018 at 20:37
Originally posted by sybersitizen sybersitizen wrote:

Originally posted by addy landzaat addy landzaat wrote:

I would think they have to disclose it when it shuts the IBIS off. I am pretty sure it is violation of some consumer laws if they don't.

That's pretty funny! There is no disclosure about the bit depth being changed in Sony cameras depending on the drive mode, or the anomalies that occur with RAW compression, or the star-eating effect that occurs at or below certain shutter speeds. Such things are only discovered by inquisitive users who conduct careful tests.
Yeah, you're right. Forget my remark, it might be wishful thinking.
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Post Options Post Options   Quote Hidrieus Quote  Post ReplyReply Direct Link To This Post Posted: 30 November 2018 at 16:54
Thank you all for taking the time to think over my question, I appreciate.
A700, A550, A580, A77
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