What a difference a week makes! We are now shooting in manual mode and I must say this class has explained the exposure triangle better than any I have seen in the past. It helps that Emma Davies was a schoolteacher. She has a way of explaining and simplifying to help us grasp the basics of what we need to know to get by and actually use the info provided. Now for the assignment. We are starting in aperture priority mode at f8 and will open up the camera one f-stop to f 5.6 for more light, so we will move the shutter speed or the ISO faster or higher to get less light to compensate and get the same exposure. It makes sense now, but I will pick up my camera and be back here. One thing to note is that my camera has three stops in between each of these settings…
This chart is the best! Simple, and useful!
So, here is the assignment.
Step 1 Select aperture priority mode, choose an aperture that is a full stop (i..e. f8) and take a photo.
Step 2 Write down what settings the camera picks.
Step 3 Go onto manual mode and dial in the settings that the camera picked, except change the aperture by 1 stop (bigger) to have a wider aperture, and a shallower depth of field.
Step 4 If you leave the rest of the settings as they were in step 2, your photo will be slightly over exposed, because you have a bigger aperture. So you need to change the shutter speed or ISO by a corresponding 1 stop in the opposite direction (less light). In this case use shutter speed, and change it to 1 stop less light (faster). Take the photo again. Keep everything the same between photos – where you stand, what you’re photographing, how much light there is.
Both the photos should have the same exposure, if the light hasn’t changed and you focused on the same spot. The only difference should be a slightly shallower depth of field in the second photo.
Have another go, this time on shutter priority. Try changing the settings by 2 stops, and by using a combination of both aperture and ISO to compensate
Started with f2.8 then went to f4 and shifted the triangle up ISO one fstop accordingly to achieve the same exposure.
More open aperture needs lower sensitive ISO or a faster shutter speed to have the same exposure. I had some trouble with the aperture locked and figured out my camera had a button that locked on it. Shooting in manual isn’t comfortable for me yet–just need more practice. Have a great week, and catch some light along the way!