Shutter durability rating -- I must be missing something

[kwoff]

I have been looking into Canon's DSLRs, specificlly the 7D and 5DmkII, and have run across a question I hope someone can help me with. Canon's website notes (boasts, actually) that both the 7D and 5DmkII have shutter durability rated at 150,000 shots. For video at 30fps (i.e., 1800 frames per minute), that would mean the shutter would last only about 83 minutes, and only 104 minutes at 24fps. Does this rating apply only to stills and not to video? I must be missing something, as a rating of less than two hours for a video camera seems totally inadequate. Can someone explain this to me?

Thanks,
Kevin

[sblfilms]

In live view video mode you are only dealing with the electronic shutter and not the mechanical shutter so the shutter cycle rating doesn't matter (Well, I guess technically you actuate the mechanical shutter once every time you turn live view on and off.)

[Barry_Green]

Right, these DSLRs have a physical mechanical shutter that is used only when taking still photos. It doesn't get used when shooting video.

[Eddy Robinson]

No, he's right. It's a plot by Canon to sell more cameras. For a feature you'd go through 50 of them, so you might as well just shoot on film.

:-J

[kwoff]

Excellent! Thanks for the information, guys. I thought surely someone would have mentioned this before if it was really a problem.

Kevin

[mel4tonin]

I have been looking into Canon's DSLRs, specificlly the 7D and 5DmkII, and have run across a question I hope someone can help me with. Canon's website notes (boasts, actually) that both the 7D and 5DmkII have shutter durability rated at 150,000 shots. For video at 30fps (i.e., 1800 frames per minute), that would mean the shutter would last only about 83 minutes, and only 104 minutes at 24fps. Does this rating apply only to stills and not to video? I must be missing something, as a rating of less than two hours for a video camera seems totally inadequate. Can someone explain this to me?

Thanks,
Kevin

a mechanical shutter doin 30FPS would be really nice to see, just a little problem of noise while recording, but who cares? :D

[Michael Olsen]

IMHO, what we really need are much faster electronic shutters. Faster shutter roll kills the skew.

I think ARRI film cameras shutters roll vertically in about 4ms. RED Epic supposed to be 5ms (but horizontal)...I wonder how quickly these DSLRs manage it.

[ydgmdlu]

IMHO, what we really need are much faster electronic shutters. Faster shutter roll kills the skew.

I think ARRI film cameras shutters roll vertically in about 4ms. RED Epic supposed to be 5ms (but horizontal)...I wonder how quickly these DSLRs manage it.
A lot slower... See my thread on frame rate and jello.

[cl516]

wow this thread's perfect, i was gonna ask the same thing. this stuff is all new to me.

so let me follow up with another question please:

what generally happens to these cameras after the official 100,000 cycles?
do they usually break right away, or is it a general guideline?
i tried to search and for some older cameras people wrote it costs about 2-300 to repair?

thanks

[Vascilli]

wow this thread's perfect, i was gonna ask the same thing. this stuff is all new to me.

so let me follow up with another question please:

what generally happens to these cameras after the official 100,000 cycles?
do they usually break right away, or is it a general guideline?
i tried to search and for some older cameras people wrote it costs about 2-300 to repair?

thanks
No. They usually last longer, in rare cases 50-100% longer. Don't count on that happening. (Replace the shutter after it passes the quoted spec)