anneabc

Oh, brother, I knew that. I usually underexpose to try to get more data to edit with. And, I have done bracketing in order to do HDR. It's just been awhile. Thanks, everyone for your help.

Reinaldokool Loc: San Rafael, CA

You need to begin to understand two basic things. Exposure parameters and automation. Exposure has two parameters: shutter speed, and aperture. ISO or sensitivity is sometimes considered a third. If you hold your ISO steady, then shutter speed and aperture work in an inverse relationship to produce a given exposure. If you go from 1/200 to 1/100 you would double your exposure. To maintain the same exposure, you must reduce the aperture by 1 stop, going for example, from f5.6 to f8.0. (Discussing the ISO changes would just needlessly complicate the explanation. ) Modern cameras, like yours, endeavor to do these calculations automatically.

Automation is the second. Cameras like yours provide for levels of automation from Full Auto to Manual, Program, Aperture priority, Shutter Priority. In Full Auto, the camera tries to make the best guess exposure, manipulating all the exposure factors, usually including ISO. In manual, the camera will not change anything, but allows you to do it all. The others are other variants.

My strong suggestion is that you purchase a copy of Darrell Young's book "Mastering the Nikon D750," for about $20 at B&N or Amazon. Young does a great job of explaining all the ins and outs of the camera in language that the average person can understand. He is better than other books on the subject--by a lot. You might also get a lot of good information from the best camera reviewer on the web, Ken Rockwell. http://www.kenrockwell.com/nikon/d750.htm#more

photodoc16

Apalflo,
If EC is primarily a light meter phenomenon, why, in manual mode with auto ISO off, does the EC control change the SS appropriately - slower if the image needs more light and vice versa?
Photodoc16

Apaflo Loc: Anchorage, Alaska

It doesn't. Bracketing does that.

photodoc16

All I can tell you is that when I change my EC to increase or decrease the exposure, the SS changes appropriately. This is obviously not bracketing which is under and over exposing for the reasons we all know. Does Canon EC work differently than other cameras?
Photodoc16

Apaflo Loc: Anchorage, Alaska

I don't have a Canon and cannot verify what they do. Canon has had a hard time visuallizing how such modes interact, though I suspect most problems are poorly modularized coding of the firmware. But what you are saying it does is something inappropriate...

DaveO Loc: Northeast CT

Did I miss an auto-iso setting involved?

photodoc16

But it does seem to work. There seems to be a lot more to EC than I thought. Reference?
Doc

Apaflo Loc: Anchorage, Alaska

Incidentally I cannot find a single source that says Canon EC in Manual Mode does what you are saying. Perhaps you could take two shots, changing only EC, and post them here using the Store Original option to provide full Exif data?

Joecosentino Loc: Whitesboro, New York

Manual mode you control everything, I am guessing you were in a semi auto mode and check your ISO to see if auto ISO is on.

BJW

Thanks for an excellent and very clear articulation of the distinctions between bracketing and exposure compensation.
BJW

par4fore Loc: Bay Shore N.Y.

1/250 sec, the third pic- 1/1000 sec and the last pic- 1/500 sec Sounds like you had bracketing for three shots turned on.

DaveO Loc: Northeast CT

LOL! Sounds like you haven't followed the thread!

cthahn

You need to learn the basics of photography and how to use your camera. Read your manual and do not stop reading it. The camera should be set on shutter priority and you select the speed. It will not change. Do not use everything on automatic. You will never be happy with you results. .

billnikon Loc: Pennsylvania/Ohio/Florida/Maui/Oregon/Vermont

The exposure compensation would not cause the camera to change exposures between shots. Unless you changed it after every shot.