Will SLR change too many lenses and wear bayonets?

There will be no fine powder, but there will definitely be wear. The problem is not that soot enters, but that changing the lens many times at high frequency will gradually loosen the buckle between the lens and the fuselage. When the lens is loose to a certain extent, although the lens can be fixed, the gap is too large and the data transmission is unfavorable, which will cause problems such as slow focusing response and increased focusing error rate. I have personal experience, because it takes less than half a year to change the lens within 4 seconds. It's obviously relaxing to screw up, but your replacement frequency should not be so high. If it is found loose, you can go to the maintenance center for consultation and deal with it to some extent.

P.S. saw a friend ask whether the reporter was troubled in this respect, and we can also answer it here. The problem will not be bypassed because we can't see the reporter, and it may even be more seriously damaged because of the bad environment. However, manufacturers will cooperate with news media and large-scale photography agencies, such as quick maintenance, providing spare machines and VIP channels. Canon is called CPS service (the specific content will not be developed and will not be used). The specific names of other manufacturers are ominous, so it can be guaranteed that the work will not be affected by problems, and most news media use public equipment, so they will not feel bad about themselves. Everyone can go into gray, but sometimes they can also go into gray. News pays attention to truth, not arts and crafts. You can look at the pictures of new planes taking off and landing taken by a military photo website, which are all black spots, so it is very telling to recommend them on the home page, hehe.