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low light AF test: a77ii vs A77 with assist lamp

Started May 25, 2014 | Discussions
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vw671
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low light AF test: a77ii vs A77 with assist lamp
May 25, 2014
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Sony SLT-A77
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Tonkotsu Ramen
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Re: low light AF test: a77ii vs A77 with assist lamp
In reply to vw671, May 25, 2014

that is incredible

it pretty much removes any worries i had about the lack of the af assist lamp

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linzdoctor7d
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SHAZAM!
In reply to vw671, May 25, 2014
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Ed at Ridersite
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Re: low light AF test: a77ii vs A77 with assist lamp
In reply to vw671, May 25, 2014

Why is the EV set at -2?  Why not shoot at ISO-800 and EV=0?  Still not a lot of light, but not darkness either.

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vw671
vw671 OP
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Re: low light AF test: a77ii vs A77 with assist lamp
In reply to Ed at Ridersite, May 25, 2014

Ed at Ridersite wrote:

Why is the EV set at -2? Why not shoot at ISO-800 and EV=0? Still not a lot of light, but not darkness either.

EV is not set to -2. Both cameras are being shot in Manual mode the "m.m." -2 (manual metering) is the camera saying that the picture taken is 2 stops under exposed. BTW. the 77 is being shot at 6400 ISO and the 77ii is being shot in 3200 ISO.

I'm pretty sure you can't even set EV in Manual mode.

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J Birn
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Re: low light AF test: a77ii vs A77 with assist lamp
In reply to Ed at Ridersite, May 25, 2014

Ed at Ridersite wrote:

Why is the EV set at -2? Why not shoot at ISO-800 and EV=0? Still not a lot of light, but not darkness either.

When you're in Manual exposure mode, the EV readout is more like an exposure meter, not something you set. (When it says -2 EV, it's just telling you that the image looks more than 2 stops darker than the exposure meter would like it.)

You can only set the EV while in Manual mode if you have the ISO set to Auto. In that case you are in what Sony calls "Metered Manual" and it is doing auto exposure by changing the ISO for you, even though you have chosen the aperture and shutter speed manually. (The option to use Auto ISO while in Manual mode was missing from the a77 mark i as far as I know, although all the newer Sony cameras seem to have it, and a few 'older' Sony cameras like the a99 as well.)

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Jeremy Birn

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Ed at Ridersite
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Re: low light AF test: a77ii vs A77 with assist lamp
In reply to J Birn, May 25, 2014

J Birn wrote:

Ed at Ridersite wrote:

Why is the EV set at -2? Why not shoot at ISO-800 and EV=0? Still not a lot of light, but not darkness either.

When you're in Manual exposure mode, the EV readout is more like an exposure meter, not something you set. (When it says -2 EV, it's just telling you that the image looks more than 2 stops darker than the exposure meter would like it.)

You can only set the EV while in Manual mode if you have the ISO set to Auto. In that case you are in what Sony calls "Metered Manual" and it is doing auto exposure by changing the ISO for you, even though you have chosen the aperture and shutter speed manually. (The option to use Auto ISO while in Manual mode was missing from the a77 mark i as far as I know, although all the newer Sony cameras seem to have it, and a few 'older' Sony cameras like the a99 as well.)

Thanks Jeremy.  I see now.  I almost never use manual and have the A-77 mark I.

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Sam_Oslo
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Re: low light AF test: a77ii vs A77 with assist lamp
In reply to vw671, May 25, 2014

That was impressive improvement. This indicates that A77II will focus much faster when shooting against the light too, and that will be much more useful for this camera-class.

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nandbytes
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thank goodness!
In reply to vw671, May 25, 2014

You know I was really worried about how I was going to track the batmobile or BIF (batman in flight) at night without the AF assist.

Now I can sleep easy
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