Of course, there may be more than one focus point in a shot. In fact, having two or three points of interest is typically preferable. However, it is normally better to have a single strong focal point, a location that viewers notice first before looking at the remainder of the image. This way they're less likely to miss something important.
In general, any subject matter is potentially interesting if seen from an interesting angle. Therefore, don't limit yourself to shooting only people or animals; also shoot objects with personal meaning for you or your family. These photographs will always be appreciated by your future self!
And now for some common types of photography:
Portraiture is the photo-taking practice of trying to capture the likeness of one person. It can also refer to a painting or other artwork created from photographs taken of one person. Portraits often include the subject's face and body, but they can also be limited to just a headshot. The portrait photographer seeks out different perspectives and angles of the subject's face to create a unique image that isn't possible with a single shot.
Reportage photography is similar to documentary photography in that both are non-fictional images used to tell a story. But whereas documentary photographers tend to stick to events that have already taken place, reportage photographers go looking for stories to photograph.
A focal point is the initial component of a work that draws the viewer's attention. An artist may choose to highlight one aspect of a work. Artists establish focus points using five basic techniques: contrast, isolation, location, convergence, and the odd. Artists must aim for harmony as well. Too much similarity between elements in a painting will cause it to appear boring.
Contrast occurs where different parts of the image or scene are light vs. dark, short vs. tall, close up vs. far away. This can be done by using colors that stand out from the surrounding area or by reducing the visual weight of certain areas of the picture. Isolation means separating one part of the scene from another. This can be done by placing something in the foreground or background, such as a tree, building, or person, to attract attention. Location refers to choosing scenes or objects that are interesting to look at. For example, if you wanted to paint a portrait of someone who is not doing anything particularly exciting or dramatic, you might choose to put them in a setting with many other people living their daily lives. This would make the subject more interesting because they would be part of a larger scene. Convergence occurs where two or more things are headed in the same direction. This could be two people walking into a building, a car driving down the road, or trees lining a path. It creates movement within the image and helps lead the eye through the piece.
It's also a good idea to keep the rule of thirds in mind while experimenting with focus points. Don't be alarmed if you're unfamiliar! It's a basic notion that involves positioning your primary subject in the bottom, higher, left, or right third of your photo scenario. This will help break up the image and avoid making it look too staged.
So, to address our first question, if each painting need a focal point, the answer is no. It is totally up to the artist to make this decision. Yes, focus points are a helpful tool (as are any other compositional tool), but as seen above, they are not essential to the success of a painting.
However, it does help if you choose something that is interesting to look at. Otherwise, your audience will just look at it and go: "Oh, what's so great about that?"
Also, remember that people like pictures that tell a story. So, if you want your work to be appreciated, you should always consider how things are connected to each other and what their purpose is.
For example, in this picture by Vincent van Gogh there is much to see and understand: There is a scene with some people on a beach. Behind them is the sea and next to them is a windmill. So, this scene has both a personal and a social aspect. The person on the left probably wants to get away from the crowd on the right which represents society's problems with poverty and greed. But he also might want to escape from his own life by joining in with the fun on the beach!
As you can see, looking at art is already an adventure because many things can be learned from paintings.