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Message: <blockquote data-quote="nickt" data-source="post: 459873" data-attributes="member: 4923">Just to add to what Wayne said, you are demonstrating to yourself how the exposure triangle works. To get a correct exposure, shutter speed and f stop must work together. P mode is giving you a correct exposure. You turn the wheel in P mode and you get alternate combinations of shutter and aperture that will give the same correct exposure. You would need to be in manual to set both shutter and aperture on your own. You also need to be very mindful of creating a 'correct' exposure in manual or you will get bad results. You can't just pair any shutter with any aperture. I am over simplifying this somewhat, ISO also factors in and flash is a whole different lesson. Aperture priority or Shutter priority mode will behave in a very similar way to what you see in P mode. Shutter and aperture will track together. In Aperture mode, you pick the f stop, the camera meter will calculate the shutter speed. In shutter mode, you pick the shutter time and the camera will calculate how much to open the aperture. A and S mode give you more specific control of shutter OR Aperture than P mode. But still, if you change one, the other will automatically change. There are reasons and tradeoffs why you may prefer to have an exact shutter speed or exact aperture. In most cases of simple daylight shooting, we pick a shutter OR aperture, which ever is most important to us and the camera picks the other based on how much light there is. This video might help:<a href="https://www.youtube.com/watch?v=F8T94sdiNjc" target="_blank">https://www.youtube.com/watch?v=F8T94sdiNjc</a></blockquote>

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