Do u leave Anti Shake always on??

[tokrot]

Saw a short clip from Dpreview about Anti Shake technology from Konica-Minolta. Seems like the CCD vibrates rapidly very often. Will it spoilt faster than normal CCD? How often do you guys leave it on??

[deslim27]

That's is an extreme example, unless your hand shake that badly..

Anyway, 7D's AS move only during exposure only, unlike Ax.. even Ax series has option to compensate full-time (feedback on LCD/EVF) or compensate during exposure only (like 7D)

[UY79]

I find that I can get slightly sharper pictures without AS turned on.

Cheers!

[tokrot]

Originally Posted by deslim27 That's is an extreme example, unless your hand shake that badly.. Anyway, 7D's AS move only during exposure only, unlike Ax.. even Ax series has option to compensate full-time (feedback on LCD/EVF) or compensate during exposure only (like 7D)

heheh... u never know the ccd is actually moving...

[tokrot]

Originally Posted by UY79 I find that I can get slightly sharper pictures without AS turned on. Cheers!

hehe... u got steady hands... Good for you!...

[UY79]

Originally Posted by tokrot hehe... u got steady hands... Good for you!...

Actually I got enough shutter speed.

Cheers!

[Flare]

Actually you can feel the AS in motion... Your camera will hum during long exposures with the AS on... but if your shutter speed is so long that you could notice it, the shutter speed is too slow for AS to be effective in the first place
But well, you can try for the heck of it... Just shoot 2 long exposures, one with AS on and the othser with it off, taste the sweet vibrations (yes, move has a song with name 'Sweet Vibrations' or something)

[pshing]

My A1 tend to generate more noise (OVERHEATED?!!) if i let the AS to run for long time. Most of the time i disable it and only enable when i need to shoot for slow shutter speed. Not sure if other users have the same problem with mi...

[Drudkh]

The demo video you saw on dpreview is an over exaggerated version. the CCD in A1 or 7D moves very little and precise. Of course it drains a bit of battery but only when AS was activated. Although your AS is turned on all the way, the CCD does not move unless neccessary to compensate your shake.

[Flare]

Well, my uneducated guess...

Anyway, a CCD is just a silicon waffer, just like your flash card, components are 'grown' with the waffer during fabrication, it has few, if not non, moving parts and attached component that can come loose or be jarred out of place by the AS movements (dropping it from high enuff and have the ccd smashed out of it's mount is another thing).

So I guess it shouldn't be too much of a problem, and there's so many A1/A2 out there that had lasted for so long.

[Xaler]

Originally Posted by Flare Well, my uneducated guess... Anyway, a CCD is just a silicon waffer, just like your flash card, components are 'grown' with the waffer during fabrication, it has few, if not non, moving parts and attached component that can come loose or be jarred out of place by the AS movements (dropping it from high enuff and have the ccd smashed out of it's mount is another thing). So I guess it shouldn't be too much of a problem, and there's so many A1/A2 out there that had lasted for so long.

There are no moving parts in a CCD and definitely nothing can come loose from it Actually, the vibration/shock to the CCD caused by putting the camera on the table (or a "drop test") is more than what it experiences during AS.

The only thing to go first, if I am to guess, are the "rails" on which the CCD moves. Moving parts usually are the first to cause problems. It needs alignment, lubrication and are the weakest points in any mechanism.

[Drudkh]

If you watched the video clip provided by dpreview, thats exactly how the ccd is mounted on the moving bracket. of course there's enough room and the maximum moving area the bracket can roam about in the camera, so that it doesn't knocks on any other parts in the camera.

[tokrot]

Originally Posted by Drudkh If you watched the video clip provided by dpreview, thats exactly how the ccd is mounted on the moving bracket. of course there's enough room and the maximum moving area the bracket can roam about in the camera, so that it doesn't knocks on any other parts in the camera.

It's flex cable being attached which could be easily spoilt, broken or came loose during movement.. Moreover, we have earlier threads on A1/A2 having CCD problems, maybe quite to virbration???

[Drudkh]

Originally Posted by tokrot It's flex cable being attached which could be easily spoilt, broken or came loose during movement.. Moreover, we have earlier threads on A1/A2 having CCD problems, maybe quite to virbration???

it all boils down to the manufacturing process. My A1 is more than 1 year old and it has zero problem so far other than it hanged on me once.

the cable is long enough for the CCD to move about. the allowed movement is only 5mm left/right/up/down to compensate the shake if i'm not wrong, whereas the maximum is 1cm. i don't see this to pose a problem for the cable/wire.

[deslim27]

The wires used to connect the CCD definitely of some material that can withstand the bending for long period of time.. KM engineers ain't dumb.. kekeke..

[Flare]

Originally Posted by tokrot It's flex cable being attached which could be easily spoilt, broken or came loose during movement.. Moreover, we have earlier threads on A1/A2 having CCD problems, maybe quite to virbration???

True, the movement could reduce the lifespan of the flex cable, but well, say from 25 years to 20 years, but will you still be using the same DSLR in 20 years time? Think back, AF technology and in camera metering are slightly over 20 years old, imagine how will cameras develope in the next 20? And if you ask me, I reckon the shutter or other mechanical parts would have failed before the flex cable or other electronic components (except destructive devices like the flash bulb) did... So personally, I don't think of it as a case to worry.

CCD failure seems to be usually due to failed components on the waffer, and i doubt vibrations are resposible, the electronics of a car or even my mobile phone are constantly under more physical pressures than wat AS puts on the CCD...

[Xaler]

Originally Posted by tokrot It's flex cable being attached which could be easily spoilt, broken or came loose during movement.. Moreover, we have earlier threads on A1/A2 having CCD problems, maybe quite to virbration???

The flexible cable is not new technology... just look inside your printer. And don't worry unduly, KM is in the copier business, they've got experience with moving parts

[Flare]

Originally Posted by Xaler The flexible cable is not new technology... just look inside your printer. And don't worry unduly, KM is in the copier business, they've got experience with moving parts

Hmmm.... yeah... they are a great print/copier maker, and some other god knows wat optical instruments... But haven't seen a Minolta Microscope yet... Had tonnes of Olympus microscopes in my previous school...

[steel]

hmm....I didn't find the AS effective for exposure more than 1sec...it helps a little but pic is still blurr.
I think if your fundamental is poor AS won't save your shot.
btw, how do u know AS is working, I can see the bar on the right side but can't feel or hear anything with this feature on.

[UY79]

Originally Posted by steel hmm....I didn't find the AS effective for exposure more than 1sec...it helps a little but pic is still blurr. I think if your fundamental is poor AS won't save your shot. btw, how do u know AS is working, I can see the bar on the right side but can't feel or hear anything with this feature on.

It's only active during exposures. To feel it in action, do a long exposure, say 5 secs with it.

Cheers!