This updated SE model uses the exact same processor as the iPhone 13 Pro. So, it's fast. Even the old model was fast.
Apple doesn't really sell slow phones at any price point. What you trade off on for their cheaper phones is usually the "everything else" part of the equation.
You want the camera to open fast, and for that reason alone you should consider the iPhone 13, 13 mini, or 12. All of those phones have a dedicated button on the lock screen to open the camera, which I find easier than the swipe gesture on the iPhone SE and all iPhones in that form factor.
What you're missing out on with this SE is:
- For the most part the entire body is the iPhone 8
- It has a far inferior screen, it's the old LCD iPhone 8 screen, and it's the smallest phone screen Apple sells.
- It has older cameras/sensors. You mentioned needing a fast camera, and that means you use your cell phone camera a lot. Maybe that means you also want a good camera, and you'll get better cameras in the rest of Apple's lineup for not much more money in some cases.
- It has the worst battery life of any currently-sold iPhone, though it's been improved from the second generation. The physical battery size is smaller than more current iPhones, and there's no way around that.
- The base model storage level is 64GB.
It's for people who "just need a phone" and want an iPhone, I'd say the kind of people who have less than 2-4 hours of screen-on-time per day.
Still, I do think that someone who can spend a few more bucks should consider the iPhone 13, iPhone 13 mini, or iPhone 12. I'd skip the iPhone 12 mini because the 13 mini gives you extra battery life that I'd say it needs.
With all of those models you're going to get better cameras, better battery life, more screen real estate, OLED screens.
If you're really into taking photos, the iPhone 13 Pro really does have an amazing camera system. I didn't think it would blow away my iPhone 12 mini but it really does. You get what you pay for and the top-end is very good. If you're on a postpaid carrier and don't plan to leave for 2-3 years, you might as well take the subsidy and get a high-end phone.