Snake
Headphoneus Supremus
- Joined
- Nov 20, 2003
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To take pictures of moving sporting events you must pre-track with the subject, already moving the camera at the same speed of motion of the subject so when you push the release you will reduce blur.
Remember the inverse shutter speed to motion law - at any focal length the lowest you want to have your shutter speed is the inverse that focal length. So for a 50mm lens 1/50th a second is the lowest you can handhold the camera and not show shake, according to the classic formula. For moving subjects there is a complex formula factoring in angle of motion versus camera including focal length, but if you wish stop action simply go with the fastest shutter speed you can manage. To assist in this either Av (aperture priority) or Tv (shutter priority) modes will work best, with Tv being (for sports) the most preferred. You set your minimum shutter speed and if their is enough light the camera will modify aperture to come up with the correct exposure, varying it as light changes. This way (as long as there is enough aperture range) none of your shots will blur because you have the speed "locked in".
For digital or slide film it is always best to underexpose rather than overexpose. For negative films it is better to overexpose rather than underexpose. It is common practice for slide shooters (especially Kodachrome uses) to dial in 1/3 stop underexposure on the auto exposure compensation to force this, but each camera / user combo is different. The reason for those rules - over / under for each film type - is that to go the other way than the film likes means you subtract detail from the photograph due to burn out of areas. Going the "right" way adds detail in the highlights but blocks up the shadows more, which can be corrected with proper post processing.
If you have a built-in flash (cannot be removed or bounced) and want to get better looking shots generally dialing in flash exposure compensation of negative will help. By doing so you are telling the camera to add more ambient light into the photograph, subtracting flash light, making for a more natural-looking photograph. If you can the best looking flash photographs have remote flash (off to the side / much higher than the built-in jobs), diffused or controlled output (bounce cube / umbrella / bounce card / fill card / light box / barn doors / diffuser screen / scrim / softbox / tent / dome, etc) or, preferably, both.
That should give you a clue right there - how many different ways they've devised of controlling (that is, reducing) the amount of artificial light photographers use. Direct artificial lighting is very harsh and your job, when you want a natural look, is to make it as indirect as possible. Natural lighting - sunlight - used to make the highest-quality photos ends up the most indirect, soft. You want to try to duplicate that pattern if you can. At least start by reducing your flash output (had to do that myself on my camera - just who decided upon these flash exposures?? A blind man??)
Remember the inverse shutter speed to motion law - at any focal length the lowest you want to have your shutter speed is the inverse that focal length. So for a 50mm lens 1/50th a second is the lowest you can handhold the camera and not show shake, according to the classic formula. For moving subjects there is a complex formula factoring in angle of motion versus camera including focal length, but if you wish stop action simply go with the fastest shutter speed you can manage. To assist in this either Av (aperture priority) or Tv (shutter priority) modes will work best, with Tv being (for sports) the most preferred. You set your minimum shutter speed and if their is enough light the camera will modify aperture to come up with the correct exposure, varying it as light changes. This way (as long as there is enough aperture range) none of your shots will blur because you have the speed "locked in".
For digital or slide film it is always best to underexpose rather than overexpose. For negative films it is better to overexpose rather than underexpose. It is common practice for slide shooters (especially Kodachrome uses) to dial in 1/3 stop underexposure on the auto exposure compensation to force this, but each camera / user combo is different. The reason for those rules - over / under for each film type - is that to go the other way than the film likes means you subtract detail from the photograph due to burn out of areas. Going the "right" way adds detail in the highlights but blocks up the shadows more, which can be corrected with proper post processing.
If you have a built-in flash (cannot be removed or bounced) and want to get better looking shots generally dialing in flash exposure compensation of negative will help. By doing so you are telling the camera to add more ambient light into the photograph, subtracting flash light, making for a more natural-looking photograph. If you can the best looking flash photographs have remote flash (off to the side / much higher than the built-in jobs), diffused or controlled output (bounce cube / umbrella / bounce card / fill card / light box / barn doors / diffuser screen / scrim / softbox / tent / dome, etc) or, preferably, both.
That should give you a clue right there - how many different ways they've devised of controlling (that is, reducing) the amount of artificial light photographers use. Direct artificial lighting is very harsh and your job, when you want a natural look, is to make it as indirect as possible. Natural lighting - sunlight - used to make the highest-quality photos ends up the most indirect, soft. You want to try to duplicate that pattern if you can. At least start by reducing your flash output (had to do that myself on my camera - just who decided upon these flash exposures?? A blind man??)