low light AF test: a77ii vs A77 with assist lamp

Started May 25, 2014 | Discussions
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vw671 Contributing Member • Posts: 536
low light AF test: a77ii vs A77 with assist lamp
6
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Tonkotsu Ramen
Tonkotsu Ramen Senior Member • Posts: 1,930
Re: low light AF test: a77ii vs A77 with assist lamp

that is incredible

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

linzdoctor7d Contributing Member • Posts: 876
SHAZAM!
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Ed at Ridersite Forum Pro • Posts: 17,252
Re: low light AF test: a77ii vs A77 with assist lamp

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 OP Contributing Member • Posts: 536
Re: low light AF test: a77ii vs A77 with assist lamp

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 Contributing Member • Posts: 770
Re: low light AF test: a77ii vs A77 with assist lamp
1

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 Forum Pro • Posts: 17,252
Re: low light AF test: a77ii vs A77 with assist lamp
1

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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AEH
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Sony RX100 II Sony SLT-A77 Sony DT 16-50mm F2.8 SSM Sony 70-400mm F4-5.6 G SSM II
Sam_Oslo
Sam_Oslo Senior Member • Posts: 2,859
Re: low light AF test: a77ii vs A77 with assist lamp

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 Senior Member • Posts: 5,575
thank goodness!
1

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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