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Advanced Exposure
Sep 01, 2014
- Advanced Exposure { Perfect Exposure by Michael Freeman}
- Bare Bones
- Settings
- Metering Mode
- File Format
- Instant Review
- Highlight Clipping Warning
- Histogram
- Bare Bones
- Metering Method
- Average
- Center Weighted
- Smart Predictive
- Spot
- Bare Bones
- What do you want?
- What is the photograph about?
- What caught your eye?
- Know how bright you want the shot to be beforehand
- Know how the light should be distributed
- Bare Bones
- Likely Problems
- Scan the scene for exposure issues
- Is there a major hotspot?
- Is that spot going to blow out and does it matter if it does?
- Is the dynamic range too high for the camera to capture?
- Bare Bones
- Key Tones
- What is the important subject in the shot?
- How bright should that subject be?
- Bare Bones
- Is clipping likely? Is there a conflict?
- Is there a conflict in how to expose?
- You have a choice between changing the light or composition OR making a compromise on your exposure OR relying on special post-processing
- For example: You are shooting a backlit portrait. You can have a silhouette, or a blown out background. What do you choose for that situation?
- Compromise means that you accept either blown out highlights or blocked up shadows.
- Post-Processing includes HDR, merging exposures, etc.
- Clipping
- Bare Bones
- Apply Metering
- Meter in your preferred method and take the shot
- Bare Bones
- Review, Reshoot
- Review your shot on your LCD
- Reshoot if necessary
- Think about if you have time to sit and check your shots on the LCD
- Also think about zooming in on the LCD to check for focus and exposure
- Brightness and Stops
- Think of exposure in terms of how bright the image is
- Changing your stop increase and decrease your image brightness
- Stop refers to your aperture or shutter speed
- Stopping up refers to slowing down your shutter speed or making your aperture larger
- This means you will have a brighter image
- Stopping down refers to increases your shutter speed or using a smaller aperture
- This means you will have a dimmer image
- Exposure Terms
- Luminance
- The amount of light the reaches the sensor or eye
- Illuminance
- The luminous power from a light source
- Reflectance
- Effectiveness of a surface to pass on light
- Brightness
- The amount of light we see (the perceived luminance)
- Lightness
- Perceived reflectance
- Value
- In light measurement, value equals brightness
- Exposure
- In a camera, this is the amount of light allowed to fall on the sensor
- Exposure Terms
- Over and Under Exposure
- More of less than ideal exposure
- Highlights
- The upper end of the tonal scale, the light areas
- Shadows
- The lower end of the tonal scale, the dark areas
- Clipping
- Total loss of information in a pixel because of extreme over or under exposure
- Black Point
- The point of a tonal scale that is completely black
- R-0 G-0 B-0
- White Point
- The point on a tonal scale that is completely white
- R-255 G-255 B-255
- Dynamic Range
- The ratio between the maximum and minimum luminance
- Exposure Terms
- Contrast and Contrasty
- The ration between high and low luminance excluding the maximum and minimum
- Key
- Which part of the brightness range is being used
- High or low key
- Dynamic Range
- Low Dynamic Range
- Diffuse lighting
- Thick atmosphere (smog, fog, smoke)
- Shooting away from your light source
- Medium High Dynamic Range
- Intense light source casting sharp shadows
- Backlighting
- Light and dark surfaces together
- True High Dynamic Range
- Light source or strong reflection in the frame
- Low Dynamic Range
- Medium Dynamic Range
- High Dynamic Range
- Contrast
- Metering
- Reflective Light Meter
- Like the one in your camera
- Measure the light reflecting off of the surface you are photographing
- Incident Light Meter
- One choice on a handheld meter
- Measures the light actually falling on the subject
- Make sure to hold the meter very close to what you are shooting
- Metering Modes
- Gray Card
- Gray cards reflect 18% of the light falling on a scene which makes them average or mid-tone
- You spot meter on the gray card and use that reading to expose
- Unfortunately your cameras meter probably meters at 12-13% which means your exposure with a gray card may be a bit dark
- Bracketing
- Stop up and down from your medium exposure
- Bracketing
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