iOS inexplicably has several camera filters that aren't found in either the Camera or Photos app, but rather in the Messages app. Yes, there are some cool filters that you can only access when you pull up your camera from within Messages. In addition to the normal filters you have when taking a photo with the camera app or adding filters later on while editing in the Photos app, you will find comic book, ink, watercolor, camcorder and aged film filters in the Messages app.
There are a number of artistic reasons to shoot in black and white - it is still seen by some as photography in its purest form as it eliminates the distraction of color, letting the photographer focus on contrast, form, texture and composition. It can also create a mood and give a sense of timelessness to some photos. Whatever your reason, it is easy to take black and white photos with iPhone. You can put a lens filter on before taking the shot so you can see what it will look like, or you can apply it after. Here's how to do it on iPhone:
Capturing burst photos on the iPhone camera means holding down the shutter release button in the iOS camera. All this changed with the launch of the iPhone 11, iPhone 11 Pro, and iPhone 11 Pro Max. Apple changed the press and hold gesture to create QuickTake videos instead. But fear not, burst mode is still accessible on the iPhone 11 and later.
iPhone offers 9 filters that you can alter your photos with - Vivid, Vivid Warm, Vivid Cool, Dramatic, Dramatic Warm, Dramatic Cool, Mono, Silvertone and Noir. You can also tweak each one's intensity on a 0 to 100 scale, so you have quite a range of possibilities when you go to post-process your photos. While this may be enough for most people, if you are really into tweaking colors and textures in your photos, which is an art in itself, then the default array of filters probably seems a bit limited.
iOS allows you to assign names to people in your photos, which the app can then use to group all pictures of that person into one album. The Photos app even has a default People folder to hold all of your individual people albums. But what if you want to group all photos of an object into an album? Maybe you want an album of all of your photos of cars or dogs. You can actually do this quite easily in most cases, or at least get a good start on it.