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shutter speed
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May 7, 2017 15:14:18   #
anneabc
 
Hi, I hope this is the right forum to ask questions. I'm attempting to start taking action shots but am a bit confused. I am including 3 shots. Please pay no attention to composition. I wasn't practicing that... only getting the dog sharp and not blurry.

I shot with a d750 and 80-200 Nikkor lens. ISO- 400, 116 mm, f3.5. My problem was that the shutter speed kept changing as I took pics in succession. The first pic-1/500sec, the second pic- 1/250 sec, the third pic- 1/1000 sec and the last pic- 1/500 sec.

Why did the shutter speed keep changing? What do I need to set differently in my camera? How do I set the minimum shutter speed? And can anyone tell me what I did wrong? Thanks









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May 7, 2017 15:18:47   #
RichardTaylor Loc: Sydney, Australia
 
Set your camera for shutter speed priority, and then choose the shutter speed you want.
What mode were you shooting in? (I do not have a Nikon)

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May 7, 2017 15:20:44   #
cmc65
 
What mode were u using?

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May 7, 2017 15:21:48   #
anneabc
 
I was in manual mode.

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May 7, 2017 15:23:55   #
anneabc
 
I will definitely use shutter priority next time. It seems that 1/1000 sec wasn't fast enough to get it sharp. Should it have been faster?

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May 7, 2017 15:25:09   #
RichardTaylor Loc: Sydney, Australia
 
Manual exposure mode?

If so then you control the shutter speed, not the camera.

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May 7, 2017 15:32:37   #
photodoc16
 
Did you use exposure compensation during your shooting session? On a Canon camera, if you use EC in manual mode, the shutter speed will change to "compensate" for your selection. If you shoot at what you set on the camera, the SS will not change in manual.
Photodoc16

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May 7, 2017 15:34:51   #
travelwp Loc: New Jersey
 
anneabc wrote:
I was in manual mode.


In manual mode, the shutter speed won't change by itself.

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May 7, 2017 15:44:00   #
anneabc
 
And that's what I realized. I had it set at exposure compensation and didn't mean to. That helps a lot. I had gone back and changed that. Thanks for all your help!!

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May 7, 2017 15:49:00   #
photodoc16
 
Glad I could help.
Photodoc16

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May 7, 2017 16:12:23   #
Apaflo Loc: Anchorage, Alaska
 
anneabc wrote:
I was in manual mode.

Exposure Compensation is not the problem.

You have bracketing turned on, with one stop increments. Turn that off and that particular problem is solved.

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May 7, 2017 16:33:17   #
anneabc
 
Ahhh, yes, you are right. It was bracketing turned on. Thank you!

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May 7, 2017 16:34:39   #
anneabc
 
Sorry, I'm a little of a newbie on some subjects. What's the difference between bracketing and exposure compensation? Aren't they the same?

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May 7, 2017 16:35:57   #
rjaywallace Loc: Wisconsin
 
Apaflo wrote:
Exposure Compensation is not the problem.
You have bracketing turned on, with one stop increments. Turn that off and that particular problem is solved.

πŸ‘πŸΌπŸ‘πŸΌπŸ‘πŸΌ Problem identified perfectly by Apaflo. /Ralph

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May 7, 2017 17:10:49   #
Apaflo Loc: Anchorage, Alaska
 
anneabc wrote:
Sorry, I'm a little of a newbie on some subjects. What's the difference between bracketing and exposure compensation? Aren't they the same?

Two very useful and very different things!

Auto bracketing allows you to shoot a sequence that changes exposure (or ISO) automatically with each shot. This might be just to ensure you get the right exposure, or that you get a sequence that can be stacked for HDR, or you can use it to get virtually identical shots of a person or a group where anyone who blinks can be cloned in from another shot. You can set up 3 shot bracketing and if shooting in continuous mode each single burst will stop after 3 shots.

Exposure Compensation is a way to bias the light meter output. It then affects whatever is controlled automatically by the light meter output. If the Exposure Mode is Manual and AutoISO is disabled the only change is the light meter indicator. If it was indicating 0 and the EC is set to +1 the indicator will change to -1. To get that same zero reading you will have to increase exposure 1 fstop. If any of the auto modes are used the exposure (or ISO) being controlled will automatically do the same thing. So setting EC to a plus EV gets a brighter picture (by lowering the meter reading) and setting a negative EV gets a darker picture. That allows the photographer to "calibrate" the meter according to the scene being measured.

Bracketing is something you may or may not need much, totally depending on the work you do. Exposure Compensation is an absolute necessity for every competent photographer (not for every shot or every job though). You will see a number of people here on UHH say they never ever use it, which just means they are still fairly low on the learning curve.

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