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:
You won't find a "comic book" lens filter in the Camera app or even in the Photos app where you would expect it to be, but the filter does exist - buried in the Messages app. Why Apple hasn't just added the filter to Camera and Photos is anybody's guess, this way can be a royal pain if you want to take a lot of comic style photos not only because of the extra steps to get there, but because you have to apply the filter before taking the photo, you can't add it after like you can with the photos in the Photos app.
It used to be that if you wanted to do any video editing aside from trimming, you'd have to pull your video into iMovie or a third-party video editing app. With iOS 13 that is no longer the case - the updated operating system makes just about all the photo editing tools available for videos as well. Now you can adjust the contrast, brightness, saturation and more, add filters, crop, rotate, straighten and mute audio all from the Photos app.
Apple has updated iPhone's photo editing interface in iOS 13, making it more intuitive and adding a few new features and tools as well. You can now fine tune filter intensity, flip photos, and adjust their perspective along the x and y axes. Flipping a photo simply gives you a mirror image while adjusting the perspective along the horizontal and vertical planes basically lets you adjust the viewing angle, similar to Instagram's perspective correction tools. Here's how to do both on iPhone: