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Sony A6500: Exposure-Bracketing and Shutter Speed Limits
May 13, 2018 08:44:57   #
Bogin Bob Loc: Tampa Bay, Florida
 
I use exposure bracketing for night shots and recently found that in situations where required exposure is >30 secs. the A6500 takes 2 photos at 30 seconds. I have Memory Button 1 set at ISO 100; f/3.5 (widest I have); 2ev-3 Images

Questions
1) is that the longest shutter speed Sony allows for auto-bracketing and
2) is my option (if that occurs) simply to set ISO higher ... maybe 400 to 800?)

Thanks, Bob

Reply
May 13, 2018 09:07:31   #
repleo Loc: Boston
 
Bogin Bob wrote:
I use exposure bracketing for night shots and recently found that in situations where required exposure is >30 secs. the A6500 takes 2 photos at 30 seconds. I have Memory Button 1 set at ISO 100; f/3.5 (widest I have); 2ev-3 Images

Questions
1) is that the longest shutter speed Sony allows for auto-bracketing and
2) is my option (if that occurs) simply to set ISO higher ... maybe 400 to 800?)

Thanks, Bob


30 seconds is the longest exposure on the Sony's. You need to go to B or Bulb beyond that. Use a wired intervalometer or remote. Try the free downloadable Smart Remote app from Sony Playmemories. This will allow you to change the settings to bracket your exposures without having to touch the camera. Use the stopwatch on your phone for the timing with a remote.
You can easily go to 800 or more with an A6500.

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May 13, 2018 10:50:25   #
Bogin Bob Loc: Tampa Bay, Florida
 
Repio - Thank you ...

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May 14, 2018 06:13:44   #
pecohen Loc: Central Maine
 
Using a remote with the bulb option is one good approach.

But it seems you already have two captures and so you might want to try working with them - assuming you have an editor like Photoshop, PSP or Topaz Studio that can handle layers. Load the two images you have as layers and align them. Then try different blending options like lighten, screen or dodge to see what you get. Especially with the dodge mode you will have to play around with the opacity of the layer on top.

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May 14, 2018 09:39:40   #
jackpinoh Loc: Kettering, OH 45419
 
Bogin Bob wrote:
I use exposure bracketing for night shots and recently found that in situations where required exposure is >30 secs. the A6500 takes 2 photos at 30 seconds. I have Memory Button 1 set at ISO 100; f/3.5 (widest I have); 2ev-3 Images

Questions
1) is that the longest shutter speed Sony allows for auto-bracketing and
2) is my option (if that occurs) simply to set ISO higher ... maybe 400 to 800?)

Thanks, Bob

Most night photos are taken at approximately ISO 3200. The longer the exposure, the more noise you will see in the image. I don't understand why you are "exposure bracketing." You need to find out more about night photography. YouTube has some good videos on this subject.

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May 14, 2018 12:15:21   #
gwilliams6
 
repleo wrote:
30 seconds is the longest exposure on the Sony's. You need to go to B or Bulb beyond that. Use a wired intervalometer or remote. Try the free downloadable Smart Remote app from Sony Playmemories. This will allow you to change the settings to bracket your exposures without having to touch the camera. Use the stopwatch on your phone for the timing with a remote.
You can easily go to 800 or more with an A6500.


Yep I also have the A6500, and repleo nailed the answer here. Also if you have the Meike battery grip for the A6500 (i have this: https://www.amazon.com/MK-A6500-Pro-Controller-Vertical-shooting-Mirroless/dp/B06XS8N639) it comes with a wireless remote control that can be used as an intervalometer, timer and bulb control. The app from the Sony Playmemories also works great. Cheers

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May 14, 2018 20:25:49   #
Dennis833 Loc: Australia
 
You don't need to use exposure bracketing for night shots. One or two exposure will give you all of the tones that you will need. First thing to do is stop your lens down from F3.5 by at least two stop EG: 6.7 or F8. This will give you more depth of focus and sharper images. But this will increase your exposure times. If your exposures get to long increase your ISO to 200 or 400 or even 800 if needed. Start out in aperture priority mode so that the camera will attempt to set the correct exposure time for you. Then switch to Bulb if you need to increase the exposure time. Example: If I expose a shot at 30 seconds and it looks okay but needs a bit more shadow detail I will take an extra exposure and double that exposure twice. EG: Go from 100-400 ISO or from 30 seconds to 2 minutes.

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May 14, 2018 21:15:21   #
Bogin Bob Loc: Tampa Bay, Florida
 
jackpinoh wrote:
Most night photos are taken at approximately ISO 3200. The longer the exposure, the more noise you will see in the image. I don't understand why you are "exposure bracketing." You need to find out more about night photography. YouTube has some good videos on this subject.


Jack, I may not have clearly stated my issue. By night photos I meant night shots of lighted buildings, street scenes, etc. where I can full dynamic range of scenes using at least 2ev 3 images.

Thanks, Bob

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May 15, 2018 10:52:20   #
jackpinoh Loc: Kettering, OH 45419
 
Bogin Bob wrote:
Jack, I may not have clearly stated my issue. By night photos I meant night shots of lighted buildings, street scenes, etc. where I can full dynamic range of scenes using at least 2ev 3 images.

Thanks, Bob

You are correct. Lighted scenes at night require both depth of field and dynamic range. I was thinking of astrophotography.

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