You can still have a great deal to learn and you can look forward to doing so, however, you can had the desire to share with you most of the collected experience so far in order to convey to you what for me has become a great passion for Black and White Iconic Prints that not only relaxes and excites me every time, but also manages to make me learn a lot about everything that surrounds us.
However, you can start even with little experimenting more and more in order to understand if this technique is right for you and you really have the desire to deepen it.
The right exposure of a photograph is given by the correct adjustment of three parameters: aperture, shutter speed and ISO sensitivity. For a photographer, an image is not too light or too dark. For a photographer, an image can be overexposed or underexposed. This is why in photography it is important to become familiar with the concept of exposure. Wanting to simplify everything as much as possible, the correct exposure of a shot is the result of the right balance of three parameters: aperture, shutter speed and ISO sensitivity.
Exposure means exactly the quantity of light that invests the sensor and draws the image: it must not be too much, not too little, so only a correct balance of the fundamental parameters allows to reach the desired figure, with the desired effect emphasizing the desired details for Black and White Prints.
Who owns a reflex camera knows the importance of this particular, since it has the ability to manually manage the exposure and the individual parameters that determine it: the value of a reflex is in this possibility of choice, which returns the power in the hands of the photographer making the machine non-protagonist, but a mere instrument available to the eye, logic and creativity of the person.
Referring to a geometric metaphor, these are the sides of the so-called exposure triangle: it is possible to vary the length of each, as long as the internal area (the exposure) is constant. Acting on the three adjustments the photographer can control how much light goes to impress the sensor (once the film) and above all how.
Opening the diaphragm a lot (f/2.8) it is for example possible to obtain a portrait in which the subject is perfectly in focus while the person surrounding it is blurred. By reducing the shutter speed to a minimum (1/1000), a sometimes unpleasant blur can be avoided on what moves quickly. Again, raising the ISO value allows you to take pictures even in conditions of sub-optimal lighting without a tripod.
Each of these three adjustments affects the amount of light that reaches the sensor and, consequently, the exposure of the Black and White Prints.