You’ve always been able to crop photos on your iPhone and iPad. It’s easy to “zoom” into your images, cutting out cruft and distraction at the edges of the frame to focus on what’s important. But now, in iOS 13 and iPadOS, you can do more than crop and chop. Now you also can skew images — aka correct perspective errors — all inside the Photos app’s edit mode.

You can do all kinds of things with this new Photos tool. If you snapped a picture of a painting in the gallery, and didn’t hold your iPhone parallel to the wall, you can fix that. Or you can get more radical, perhaps by “fixing” an image of a skyscraper to stop it from disappearing to a point in the distance. The good news is that these perspective tools are fun and easy to use. Let’s check them out.

Black-and-white photos aren’t just regular photos with the color taken out. Or rather, they are exactly that, but they are also more than that. A B&W portrait can seem to say more about the subject than a colorful version, for instance. B&W is also ideal for showing more graphic images. Take a color photo of scaffolding and it looks super-dull. Take the same photo in B&W, jack up the contrast, and it becomes a stark grid — way more interesting to look at.

There’s much more to taking a B&W photo than just removing the color. For instance, did you know that a color filter will have a startling effect on a B&W photo? Let’s take a look at some of the tricks to capturing and editing stunning black-and-white images.

The iPhone’s camera is arguably one of the best cameras most people will use for capturing life moments. Sometimes, though, those photos don’t turn out quite as perfect as you hope. The iOS Camera and Photos apps have some basic editing tools, but if you’re looking for more fine-tuned tweaks, Snapseed is a powerful, free photo editor for iOS that helps revive and tweak your shots.

Often, our eye is drawn to something because of its color. But sometimes we’re attracted by a pattern, or perhaps color even detracts from an image (like a row of cars in front of a beatific white building). At those times, we should shoot black-and-white images, which emphasize pattern, texture and shape.

The iPhone — with its giant screen, its great camera and its huge library of photo apps — is fantastic for shooting B&W pictures. Let’s take a look at how to shoot amazing black-and-white photos with your iPhone.

One of my favorite observations by a now-forgotten sage explained the difference between writing and photography like this: A bad sentence can be massaged, but nothing helps a bad photo.

So true. However, I’ve experienced for myself how a good photo-editing app can salvage sloppy composition or bad exposure — and even teach you something along the way. So if you resolve to become a better photographer in 2017, you might want to add some tools to put a finer finish on your iPhone photos.

There are hundreds upon hundreds of different photo editing apps for iOS in the App Store. So, how would you know which ones are worth trying out? Well, I thought I’d help you out by running through my personal top ten photo editing apps.

Check out my video rundown below.

Long-exposure photography lets you capture light trails, motion blur and better low-light shots. While the iPhone’s built-in Camera app doesn’t let you control shutter speed and light sensitivity, lots of apps do. Slow Shutter Cam is my favorite — here’s how I’ve used it to capture long exposures with nothing but my iPhone 6 and a tripod.

Manual camera apps for iPhone offer better control over settings like exposure, focus, ISO and shutter speed. If you’ve ever shot photos in an environment where the light wasn’t ideal or had a rough time balancing shadows and light, you would benefit from a manual camera app.

While these kinds of apps aren’t always necessary, a great one is a good tool to have in your app arsenal. These are currently the best manual camera apps for iPhone.

Nic Tullis has a summer project that doesn’t involve surfing or working at a frozen-yogurt shop.

The 18-year-old is at the tail end of a Kickstarter campaign to to raise $2,500 that will keep him out photographing with his iPhone 4s. His “Homeless But Not Hopeless” project aims to bring awareness about the homeless population of St. Louis, Missouri, which spiked 12 percent after the economic tsunami hit.

Tullis takes photos of homeless people that show how they live along with normal shots that show off St. Louis. The funding for the project would rent a gallery space to auction off prints as a fundraiser; proceeds would go to two local organizations that help people get back on their feet.

During his 25-year career as a photographer, Dan Marcolina has captured moments of everyday despair and delight, from beaches and backyards to bus stations and wedding celebrations.

His work exhibits the ease of an inside joke or a knowing wink; the images are visual juxtapositions that live up to a high point of praise from Richard Avedon, who once commented that Marcolina makes images that aren’t “trying to be beautiful.”