Notes from class - Week 7

Photography Technology, week 7

Digital capture continued
Light meters
Tungsten lighting


Assignment can be blogged, but need to hand it a hard copy to the teacher :S
Pick one lens and one light meter to research, do an in-depth study of each. More info on assignment sheet.
DUE MAY 31ST



Digital Capture


“Dose size matter?”

-larger size = more photosites, more resolution
-smaller size = easier to take out.

135mm film size
Originated as cinema film
Its 35mm wide.
Image area: 24mm x 36mm
Half frame compact cameras
Sensor array size
Full frame sensor =24mm x 36mm
Smaller sensors defined with a crop factor;
Eg: 1.5 X
1.6X
Crop factor relates to the cropping of the angle view as a result of the smaller sensor.


Tungsten Lighting

There are 3 types of Tungsten lights
Filament
Halogen
Discharge


*-glass envelope filled with argon/nitrogen mix
-low output
-100 hours of life.
-output and colour temp changes during life
-increase voltage = shorter life.

**
-3200k
-quartz envelope. Halogen gas, added to gas mix
-moderate output
-life 25-200 hours
-more constant output and colour temp
-never touch envelop when hot
3]
-5600k daylight balance.