In the following example images, f-stop and shutter speed remain constant while ISO increases in 1 stop intervals from 200 through 800. A 1 stop decrease in ISO cuts the signal amplification in half producing a darker image with less noise. I sat down on the floor and got about four shots in before the baby lost interest and the moment was over. A 1 stop increase in ISO doubles the signal amplification producing a brighter image with more noise. The combination of those two variables made my shutter speed 1/320. Focus your lens before selecting any of the camera settings. If your f-stop is incorrect, parts of the photo may be out of focus, rendering it worthless. It’s very important to select f-stop before shutter speed & ISO. Because of the relative darkness, I raised my ISO to 3200 and set my aperture to f/2 to let in more light. You can change your ISO later if required but always start at base ISO. My goal was to achieve a shutter speed of 1/250 or more in order to freeze his moving arms and hands. That morning, there happened to be wildfire smoke covering much of the sun, making the light coming through the window weaker than usual. I’d shot in that bathroom before and knew it was relatively dark. On my way back to the bathroom, I quickly adjusted my camera settings. I hastily shut off the lights, opened the blinds on a window, and sprinted for my camera halfway across the house. I was quickly brushing through my hair after a shower when I spied my naked baby in the mirror playing with the roll of toilet paper – classic babyhood! This is one of my all time personal favorite photographs. If the shutter speed is too slow then bring the ISO up. If it’s too fast then bring the ISO down. But as I studied more about the exposure triangle how the variables of aperture, shutter speed, and ISO associate to determine the exposure of a photograph.
Set your aperture and keep your eye on the shutter speed. Helpful hint: When starting to work with aperture, begin by shooting in aperture priority mode.
I want to share not only the settings on a few of my photographs, but the brief story behind them and WHY I chose the aperture I did. But with lots of practice, changing my camera settings became second nature. Wrapping my head around the exposure triangle was tricky for me at first.
Iso and f stop full#
It was exciting!īut as I studied more about the exposure triangle – how the variables of aperture, shutter speed, and ISO associate to determine the exposure of a photograph – I realized that I wasn’t using my lens to its entire capacity nor was my photography growing and improving to its full potential. I opened up that aperture wide and was suddenly able to capture those beautiful compressed backgrounds and bokeh I’d been craving. Seven years ago, when I first began my journey into photography, my husband gifted me with the cheap but fantastic Canon 50mm f/1.8 lens.
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