Your question has a one-liner answer. So I have to look for some hidden questions of yours. How impressive, right? Anyways, a mirrorless camera can last for at least 10 years but only if you maintain it properly. Go by this very well-known rule;
“If you take care of things, they last”
Now it is time to get to the hidden part as I mentioned. If you were wondering what is the lifespan of a mirrorless camera, it implies that you are not so sure about either purchasing one or switching to one. To help you with that I will share some points or more like warnings concerning mirrorless cameras, that will help you for sure.
The first point that is super important and it is that a lot of marketing will tell you that mirrorless cameras are gonna be tiny and beautiful and all that. Well, guys if you stay in the realm of full-frame cameras it is not gonna be that small. The body will be smaller in your hand and all that; it is lighter but the lenses, because it is just physics, cannot be that small. So if you are thinking of saving a bunch of space and weight, well don’t get your hopes too high because it is gonna be very limited yet.
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The second thing is the electronic viewfinders EVF. With a mirrorless camera what happens is when you look into the viewfinder on the DSLR camera, it is as if you had a mini television inside a mini screen that is showing you basically what the camera sees. So it is a different experience and that means if the EVF electronic viewfinder is not great then it Is gonna look really bad on your screen. You are gonna think everything is either fuzzy or overexposed or underexposed and pixelated and all that. Nowadays it gets a lot better if you are trying to get older with more or fewer cameras and make sure it is good for you and you won’t get confused.
An af issue that is a little bit annoying is that mirrorless cameras seem more apt to get stuck on backgrounds and refuse to focus on closer blurrier subjects without a little help at least compared to DSLRs. That is all for the needed info; I wrote much more than what was asked. Hopefully, it will be worth it.