Re: { PHOTOGRAPHY } thread
ito link para sa mga SLR users regarding exposure
http://www.fredparker.com/ultexp1.htm
ito ung summary nung mga lessons...
THE ULTIMATE EXPOSURE COMPUTER
A GUIDE FOR NATURE PHOTOGRAPHERS
©1995-2009 Fred Parker
Introduction
Why Your Light Meter Lies To You
Exposure Value, Film Speed, Shutter Speed and f/stops -- What Are They?
How To Use The Ultimate Exposure Computer / Throw Away Your Light Meter!
A Typical Day In The Life Of A Nature Photographer
Planning Ahead
Using The Ultimate Exposure Computer Wisely
The Final Step
Where on Earth Are You?
Exposure Value Chart
Exposure Factor Relationship Chart
Useful Photographic Exposure Guidelines
Handling Tricky Lighting Situations
EV, Footcandles and LUX (For The Truly Dedicated)
at....
APPENDIX "A":
WHAT TO DO IN TRICKY LIGHT SITUATIONS
Front Lighting: Follow directions given in this document.
Side Lighting: Expose for front lighting, exactly as described herein. Bracket in half stop increments to one and a half stops over exposure. No need to bracket on the underexposure side. Alternatively, use a reflecting surface to bounce more light into the shadows. Make decisions based on the tonality of the subject. With a light subject your first exposure should be your best. With a darker subject your last exposure should be correct.
Back Lighting: Where possible, shoot subject in front of a dark background. Use EV 12 as your starting point (there are three stops difference between sun and shade) and bracket in half stop increments one and a half stops to the underexposure side (no need to bracket to the over exposure side -- EV12 takes care of it for you). If you must shoot into a light background, your best bet is to shoot a silhouette. Examples are backlit fog on a lake with fishermen in boats in the shot. In this case, start with EV 15 and bracket in half stop increments to three stops on the under exposure side. Your backlit photography will be better if you use a long lens (with an appropriate lens shade!). Make sure your lens is scrupulously clean. If you are shooting people, use a warming filter (such as 81B), and adjust exposure by increasing exposure by 1/2 to one stop.
The Ultimate Backlight -- Sunrises & Sunsets: When the sun is in your shot, go for silhouettes. Begin with EV 15 and bracket in full stops to four stops under.
Night Shots: Don't shoot them at night, shoot at dusk. Look through your camera with the aperture fully stopped down. This has the effect of taking color out of the scene and allowing you to judge tonality more accurately. When your subject and the sky seem to be the same shade of gray, open up the lens and make your exposure. With a middle tone subject, this will usually take place 30-45 minutes after sundown. Use EV9 as a basis for exposure. Bracket in half stop increments to two stops over and two stops under. You will like at least half of the shots.
Shoot the Moon With a Long Lens: Use EV14. Bracket in half stop increments to one stop over and one stop under.
Shooting Scenics in Woods or Where There Are A Lot of Shadows: Shoot under overcast (EV12 or 13) situations.
Fast Moving Subjects -- Sports, Etc.: Pick a vantage point that lets you shoot in front light, if possible. Utilize a dark background if available. Use a telephoto lens and a tripod, if possible. Use Chart B to select a film speed that will allow you to use a shutter speed TWICE the reciprocal of your focal length (i.e. a 300mm lens at 1/500 sec).
Shooting from an Airplane or Boat: Use Chart B to find a film speed that will let you shoot at THREE times the reciprocal of the focal length (i.e. 1/1000 sec for a 300mm lens).
Macro or Micro Shots: Make adjustments for loss of light due to extension of the lens or bellows, as given in the instruction manual, or on the lens barrel. Better yet, use your in camera meter! It will need the exercise.
Excessively Long Exposure Times: Times above 10 seconds or so. Here you run into reciprocity failure (a fancy name for "it will take a LOT longer than you think!") Follow the directions that come with every film package. You will run into this problem whether you are using a meter or not. Bracket liberally!
again...practice at basa basa lang..