Direct Direct Transfer IndirectDirect Transfer

There are some advantages to transferring photos directly from your EOS 40D to a computer. The destination computer doesn't need to have a card reader all it requires is a USB port. So, if you have the USB cable that came with your camera, you can transfer photos to any computer that has the Canon utility software discussed later installed. However, direct transfer uses your 40D's internal battery power, while removing the card and transferring the photos with a card reader installed on the...

Your Autofocus Mode Options

Choosing the right autofocus mode and the way in which focus points are selected is your key to success. Using the wrong mode for a particular type of photography can lead to a series of pictures that are all sharply focused on the wrong subject. When I first started shooting sports with an autofocus SLR back in the film camera days , I covered one game alternating between shots of base runners and outfielders with pictures of a promising young pitcher, all from a position next to the third...

Using a Card Reader and Software

You can also use a Compact Flash memory card reader and software to transfer photos and automate the process using the EOS Utility, Photoshop Elements' Photo Downloader, or the downloading program supplied with some other third-party applications. This method is more frugal in its use of your 40D's battery and can be faster if you have a speedy USB 2.0 or FireWire card reader attached to an appropriate port. The installed software automatically remains in memory as you work, and it recognizes...

Adjusting Exposure with ISO Settings

Another way of adjusting exposures is by changing the ISO sensitivity setting. Sometimes photographers forget about this option, because the common practice is to set the ISO once for a particular shooting session (say, at ISO 100 or 200 for bright sunlight outdoors, or ISO 800 when shooting indoors) and then forget about ISO. The reason for that is that ISOs higher than ISO 100 or 200 are seen as bad or necessary evils. However, changing the ISO is a valid way of adjusting exposure settings,...

Upgrading Your Firmware

If you're computer savvy, you might wonder how your EOS 40D is able to overwrite its own operating system that is, how can the existing firmware be used to load the new version on top of itself It's a little like lifting yourself by reaching down and pulling up on your bootstraps. Not ironically, that's almost exactly what happens At your command when you start the upgrade process , the 40D shifts into a special mode in which it is no longer operating from its firmware but, rather, from a small...

Customizing White Balance

Back in the film days, color films were standardized, or balanced, for a particular color of light. Digital cameras like the EOS 40D use a particular white balance matched to the color of light used to expose your photograph. The right white balance is measured using a scale called color temperature. Color temperatures were assigned by heating a mythical black body radiator and recording the spectrum of light it emitted at a given temperature in degrees Kelvin. So, daylight at noon has a color...

Time LapseInterval Photography

Who hasn't marveled at a time-lapse photograph of a flower opening, a series of shots of the moon marching across the sky, or one of those extreme time-lapse picture sets showing something that takes a very, very long time, such as a building under construction. You probably won't be shooting such construction shots, unless you have a spare 40D you don't need for a few months (or are willing to go through the rigmarole of figuring out how to set up your camera in precisely the same position...

Fixing Exposures with Histograms

While you can often recover poorly exposed photos in your image editor, your best bet is to arrive at the correct exposure in the camera, minimizing the tweaks that you have to make in post-processing. However, you can't always judge exposure just by viewing the image on your 40D's LCD after the shot is made. Nor can you get a 100 percent accurately exposed picture by using the 40D's Live View exposure simulation feature described in Chapter 3. Ambient light may make the LCD difficult to see,...