So from time to time it may be a good idea to take a class, either online or in-person to remember how this whole capture of light thing works. A few notes from the class I took over the weekend for those of you with new DSLR cameras.
1) Auto format–good if you really don’t know what you’re doing. But it’s like walking up to a baker and saying “make me a cake” and you get a strawberry banana cake when you wanted German chocolate. You didn’t specify what kind of cake and the same holds true for taking photographs.
2) ISO–you cannot overstate the importance of having the proper ISO for your conditions. If you are outside on a bright sunny day, ISO 200 or even 400 will work for you but at twilight, time to open that thing up higher and start approaching the 1600 range as lighting degrades. Experiment with different ISO settings to see how this works. It’s a DSLR and the space on a memory card is cheap. Blowing that once in a lifetime shot may not be so expendable.
3) Aperture (f-stop) — this is how big the hole is in the lens that lets light through. The bigger the hole, the more light shines through. It’s sorta like the family idiot…everyone knows he’s got a big enough hole in his head that you can see clean down to his gullet but he just won’t quit showing it off. Same is true here. The lower the number, the larger the opening. If you can find a lens with a 2.8, 1.8, 1.4 or so aperture then you can grab some really intense photos in low light. Conversely, if you have a smaller aperture lens, say a f4-6.3, you have what is called a slow lens. It’s slow because it requires more time for the shutter to remain open in lower lighting to achieve a decent image. That also means that your image is more prone to blurry shots because nothing really stands still long enough anymore. Well except for the oldest brother in my family…he sits still for so long, Mom had to dust him as a child…oh wait…that was me.
4) and finally…Shutter speed. This is how fast the shutter opens and closes to control how much light passes through the lens and into the sensor. It also determines how your image will be captured. A fast shutter speed means that you will stop motion faster but it also means that your aperture must be opened more in order for enough light to pass through to get a good enough image to use. If you look at the photo above, you can see where I stopped the helicopters rotors in flight. It’s a neat trick but I must confess…the camera was on auto…and what was that about strawberry banana cake again.
Questions? Let me know…you can look online for digital photography classes in your community. Check with your local community college for continuing education classes as well as check with local camera shops. That’s where I took mine…and it only cost me $30 for two and a half hours of refreshing my brain. I wish I could do that for math. But if you are in the San Antonio area, check the Camera Exchange website and let them know you read about it here on Jchampion.com.
They aren’t paying me anything but I figure if I get enough referrals they might let me take the next class for free.