Week two's class {located here} is about ISO and shutter speed. Because I took a photography class in high school I knew a little bit about this, but again was not taught back then on DSLR cameras, so a refresher course was just what I needed!
Here's the short break down: The higher the ISO, the quicker the image will be captured and the less light that is required. The lower the ISO, the longer it takes for the image to be captured and the more light you will need. A little confusing, but basically for me it helps to just imagine myself outside and knowing that the more natural light I have, the lower my ISO number. And if I'm inside and need help with light to crank that baby up to a higher ISO number, although my images will be more grainy.
Your shutter speed is how quickly the shutter, or the little door that opens in front of your film or image sensor, operates. The numbers that you see representing shutter speed like 60, 120, 250, 1000 represent 1/60th of a second or 1/120th of a second, and so on. So the higher the bottom number on the fraction, the faster the shutter speed. The smaller the number, the slower the shutter speed.
As for this weeks challenge, we were to find our kitchen sink - (easy enough right?), then find an object to "block" the water. Turn your camera to the "TV" mode, and take 1 picture at 1/80th of a second, then at 1/1000 of a second. Here's my pictures:
{ISO 800, exposure time 1/80}
{ISO 800, exposure time 1/1000}I don't have a tripod, so I couldn't participate in the bonus challenge... boo!
One last thing... I tried operating in the "M" mode for the end of the lesson where she was giving you 5 steps and talking about setting your f/stop, ISO, shutter speed, etc... and all of my pictures were black. I turned up the ISO number and it didn't matter, all of the images still came out completely black. Any of my fellow students have an idea why? I figured out how to change the shutter speed but couldn't figure out how to change the f/stop and I wasn't sure if that was the reason or not. I'm stuck.
See ya next week! :)
Do you have a Canon Rebel? If so, you change the f/ by pushing the AV button that is by the screen while you turn the dial. What was your f/ set at when the pictures were coming out black? If it was really high, like 22, then that could have been the problem.
ReplyDeleteI have a Canon 20D, so I don't have that button. I guess I'm going to have to look at my owners manual and see how to change it when in M mode. Thanks Kristal :)
ReplyDeleteIf you can't figure out how to change the aperture after reading the manual, try holding the focus button while turning the dial (at the back). The 20D has a custom feature that sometimes gets turned on that won't let you change the aperture in Manual unless you do both at the same time rather than just turning the dial.
ReplyDeleteI'm with Kristal and have a Canon Rebel, so my advice wouldn't help either. But, great pics! The lighting was perfect and you can definitely see the effect!
ReplyDeleteGreat pics. Lighting looks really good in both of them. Lighting is my enemy in this process, I think. I can't get it right. A lot of my photos turn out black too no matter what I change! Very frustrating!
ReplyDeleteGood pics Megan! A bunch of the pictures that I took this week also turned out black - I think because my sink doesn't have any natural light around and even though my ISO was sky high and aperture was low, the shutter speed was too fast. So I chickened out and posted non-sink pics :)
ReplyDeleteI don't have any advice, but I really like your pictures. Good job!
ReplyDelete