
Originally Posted by
SNC1923
I think John's comments here are right on. It's definitely your white balance. Color is rated in temperature. . . . Daylight is 5000 degrees, tungsten lamps are 3200 degrees, etc. In the old days, if you shot indoors without a flash (daylight film) your pics were yellow, much like your first one is. In the old days we attached a blue filter. Today, you either set your white balance to "tungsten" or take a white balance with a white card. Frankly, I rarely if ever mess with my white balance.
Insofar as the depth of field is concerned, two things:
To have a greater depth of focus, you need to have a greater depth of field. If adjustable on your camera, you need to stop down. That is, from f/8 to f/16 for example. If you don't understand these numbers, I'll give it a try. They are fractions. It's actually 1:8.0 or 1/8. Here 1 is the length of your lens and 8 (1/8) is the diameter of your aperture. It would take 8 aperture diameters to equal the length of your lens. Therefore, the larger the number (8, 11, 16, 22) the smaller the aperture and the greater the depth of field. 1/8, 1/11, 1/16, 1/22, etc.
Anytime you start messing with shutter speeds and apertures, especially indoors, you almost necessarily have to be on a tripod. Because stopping the aperture down decreases the light entering the lens, the corresponding shutter speed must be slower.
So one thing to fix the depth of field is to stop down the lens. The other is to focus on whatever is in the foreground. You would want to focus on the yellow paint receptacle. You can lock the focus on your camera by pointing the focus indicator at the intended subject, depress the shutter release part way, then recompose and shoot. In other words, the intended point of focus (the subject) does not have to be in the center of the finished picture, but it needs to be in the center when you focus. Your camera has a small oval, circle, or set of brackets to indicate where focus is determined.
Clear as mud? When school's out I'll actually have time to take some pictures to make all of this less abstract. If you have any questions, don't hesitate. This all seems complicated at first, but is actually easy to master and it fits together like a simple puzzle.