exposure shift with continuos shots

Two images taken in a burst, both simply cropped, resized, and compressed for posting. Both display the same exif data, but look noticeably different in exposure. I have noticed a number of times. I didn't move, the squirrel didn't move, and the light was constant. What gives?

They look bracketed but the data says no, Hum! Sometimes the magic box just does what ever it wants. i often think it does not pay to delve to closely in the inner workings of the magic box. These were not jpegs, were they? There is quite a contrast issue. Sharpness seems un affected.

RON said:

They look bracketed but the data says no, Hum! Sometimes the magic box just does what ever it wants. i often think it does not pay to delve to closely in the inner workings of the magic box. These were not jpegs, were they? There is quite a contrast issue. Sharpness seems un affected.

Click to expand...

Yes, jpegs -- I don't bother with raw, as I am idle and lazy. It is the contrast that varies, like the camera can't quite figure out what to do, though this was not a tricky light/contrast/focus situation.

You can see you have ever so slightly moved between shots, where was your focus point, it could be one shot the camera was metering for the dark part of the coat and the other on the lighter part of the coat ?

Matrix vs center weighted vs single point metering. I would guess that single point would be more susceptible to an exposure shift than center weighted or matrix. Like Daz said, that could possibly cause it. Just a slight shift.

Aperture in the second one didn't quite stop down all the way.

Well you know my theory. There is a little Japanese person packed inside your camera who makes many of the exposure decisions when you shoot in jpeg. [Although these days the person is probably Chinese.]. This person probably blinked just as you pressed the shutter. The Big Ranger did not create a lazier dog than me, but I will not let someone else make my exposure decisions for me. I like to make my own mistakes. So that is why i always shoot in raw.

Do you happen to have Active D-Lighting turned on? This is something that's interpreted a shot at a time and can greatly impact contrast. Since you're shooting jpeg I'm willing to bet this is the culprit, particularly given that it can be bracketed so that one shot is with and one without according to this...

Photography Lighting | Active D-Lighting Great for Cameras from Nikon from Nikon

Does this happen with other lenses? Could be sticky aperture blades. I've had that happen before.

Were you in manual or Aperture Priority by chance? I've seen another discussion on a similar topic.

When I shoot sports in Continuous-HI and in Manual, I do not experience this on the D7100.

I always shoot manual mode, continuous Hi, AF-C, spot metering. I just checked, and active d-lighting was set to Auto, which I have turned to off. I will see if that has an effect.

It does also happen on my 16-300 and 90, as well

I had the same with some tests i did in the does high shutter speeds and OS work well,we came to the conclusion it was my framing that had changed hand holding a 600mm lens.