On APS-C, the smaller sensor applies a crop factor (≈1.6× for Canon), so the lens behaves like a 29–216mm equivalent on full-frame. On a full-frame body, the same lens gives its true 18–135mm range.
On the Canon EOS 1500D, exposure compensation in Shutter Priority mode may appear ineffective because the camera automatically adjusts aperture to maintain correct exposure. If the lens reaches its aperture limits, compensation has no visible effect.
ISO Settings: If ISO is fixed, the camera has fewer options to adjust exposure. In Auto ISO, the camera may override compensation by adjusting ISO instead.
How to Make Exposure Compensation Work
- Use Aperture Priority (Av) or Program (P) Mode: These modes give the camera more flexibility to adjust shutter speed or aperture, so compensation is more effective.
- Enable Auto ISO: This allows the camera to adjust ISO when aperture limits are reached, making compensation visible. (咁點解唔自己調 ISO?)
solder: to join pieces of metal or wire with solder
toggle switch: an electrical switch that you move up and down or backwards and forwards
avid: very enthusiastic about something (often a hobby)
holy grail: a thing that you try very hard to find or achieve, but never will
add-on: a thing that is added to something else
hitch: a problem or difficulty that causes a short delay
mainframe: a large, powerful computer, usually the center of a network and shared by many users
pore over: to look at or read something very carefully
devise: to invent something new or a new way of doing something
conceive: to form an idea, a plan, etc. in your mind
viable: that can be done; that will be successful
tweak: to make slight changes to a machine, system, etc. to improve it
rocketry: the area of science which deals with rockets and with sending rockets into space; the use of rockets
Traf-O-Data was a 1970s business partnership formed by Bill Gates, Paul Allen, and Paul Gilbert to analyze raw traffic data from pneumatic road counters and create reports for traffic engineers. While only moderately successful and ultimately a failure, it was the precursor to Microsoft, providing essential experience with Intel 8008 microprocessors and data processing.
Micro Instrumentation and Telemetry Systems, Inc. (MITS), was an American electronics company founded in Albuquerque, New Mexico that began manufacturing electronic calculators in 1971 and personal computers in 1975.
proclamation: an official statement about something important that is made to the public; the act of making an official statement
clunky: (of technology) old-fashioned; not well designed
prototype: the first design of something from which other forms are copied or developed
In Python, there is no difference between using double quotes ("Samson") and single quotes ('Samson') when defining a string. Both represent the same type of string object.
print("Samson") # Output: Samson
print('Samson') # Output: Samson
In Python, __init__ is a special method used in classes. It’s often called the constructor, because it runs automatically whenever you create a new object (an instance) from that class.
In Python, class names are typically written with a capitalized first letter.
Class: A blueprint or template. It defines what attributes (data) and methods (behavior) its objects will have.
Object: A specific instance created from that class. Each object has its own data but follows the structure defined by the class.
machine: a piece of equipment with many parts that work together to do a particular task. The power used to work a machine may be electricity, steam, gas, etc. or human power.
mechanics [uncountable] the science of movement and force
mechanism: a method or a system for achieving something
