Sensor Swipe Suggestions Sought

[fergusd]

simpo two said:

Well it would stop dust blowing in while you're changing lenses.

Well, the dust will still get into the mirror chamber, and from there ultimately onto the sensor . . . the air turbulence from the mirror will ensure that eventually . . .

simpo two said:

The only reason I can think of for NOT making it seal is that the air pressure might hamper mirror movement at very fast shutter speeds

there's that, weight (lighter is better), ensuring the mirror always returns to the correct 'down' position (which would be almost impossible with a seal to compress), etc . . .

My D70 was terrible when I got it, first day I used it I had to clean it (and know someone else in the same boat), thankfully it's been fine since then . . . I've used a compressed gas blower thing very carefully . . .

You have to remember, however, some people are daft . . .

The gas blower I have is actually just propane, which is liquid under pressure, if you use the can on it's side, for example, it sprays liquid propane . . . which then evapourates and freezes whatever you sprayed it onto . . . so no wonder they crack the sensor . . . and using a home air compressor ? . . . surprise surprise . . .

Fd

[dcw@pr]

fergusd said:

simpo two said: Well it would stop dust blowing in while you're changing lenses. Well, the dust will still get into the mirror chamber, and from there ultimately onto the sensor . . . the air turbulence from the mirror will ensure that eventually . . .

also the chip has a charge on it when it is on which actively attracts dust. i don't think you would ever get around this problem. Doesnt the Fuji S2 have a piece of glass over the sensor that you can wipe clean without worrying about doing any damage?

[GetCarter]

Had so much grief with the D1X and STUFF on the CCD, that the D2X is NOT changing lenses unless really needed.

[simpo two]

fergusd said:

Well, the dust will still get into the mirror chamber, and from there ultimately onto the sensor . . . the air turbulence from the mirror will ensure that eventually . . .

Eventually yes, but it would a whole lot better than having a straight-through path.

[poah]

Ian_H said:

poah said: I've got a blower, sensor brush and sensor swabs. I use the sensor brush the most. it is expensive but it's worth it. I was going to buy the sensor brush but then I saw this http://194.100.88.243/petteri/pont/How_to/a_Brush_Your_Sensor/a_Brush_Your_Sensor.html Not sure whether to go for the cheap alternative now Cheers Ian

when I say I have, I mean my brother inlaw has lol

I'd rather have somthing I can use out the box rather than the chance I might feck it up

[fergusd]

simpo two said:

fergusd said: Well, the dust will still get into the mirror chamber, and from there ultimately onto the sensor . . . the air turbulence from the mirror will ensure that eventually . . . Eventually yes, but it would a whole lot better than having a straight-through path.

Although you need to do some computational fluid dyanamics to prove it . . . I suspect that when the mirror flips up it will leave a partial vacuum behind it, and a high pressure area near the focusing screen, this will tend to push and suck air towards the shutter and thus sensor . . .

I suspect if you have dust in the chamber and it's not stuck to something . . . it'll end up on the sensor fairly quickly one way or another . . .

Anyways, that's all somewhat irrelevant, dust in the camera ends up on the sensor, it's a pain . . . I'm not sure with the cost of cameras falling all the time whether more than a very few professional services are worth it . . .

Fd