DSLR dust slackening?
Answers: Dr. Sam is right. Don't changeover your lenses in dust storms!
When I am doing cumbersome shooting, I have three bodies beside the lenses I need attached to them so I don't own to change lenses contained by the middle of the shoot. It makes sense to do that as a pro.
Caution when exposing the inside of your camera to the environment is only good adjectives sense. Most of the newer cameras have worthy sealing against dust and other environmental issues (like dignified humidity).
While we are on the subject of shaking, the view that you need IS for ALL your lenses is not really true. Only lenses that because of their length can introduce camera movement when using smaller number than optimal shutter speeds, need this fact. Most lens designers agree that having this point in the lens provides the most anti-shake protection, so putting this side in the camera, may seem to be like a "fix-all", but contained by reality when compared leader to head using long lenses the "surrounded by lens" design is more effective.
I hold Sony A100 with dust drop and CCD-shift Anti-Shake platform and I can say that it's a adjectives features. But anybody who has Nikon may relate you that it's a bullshit in comparison near pleasure to have Nikon.
I hold only have my D200 for 18 months now and I'm not a high-ranking use pro, but I can't see that dust is an issue. I grew up with picture cameras and dust was of late as much a villain in that it would rationale scratches on your show or gum up the works, so I learned to use some presage about how and where on earth I change lenses. I enjoy a routine where the camera innards are exposed for the smallest possible time - "lens off-lens on" - which is good practice. When the sensor shakes the dust rotten, where does it be in motion, anyhow?
This is much more of an issue with DSLR's than it ever be with picture CAMERAS. In film photography the problem have always be with dust appearing on negative or transparencies. There are many sophisticated tools & technique for removing dust from film.
On DSLR cameras the problem is that dust can settle on the sensor because it is exposed every time a lens is removed. In a motion picture camera if a speck of dust settled on the film it would usually be "transported" away by the motion picture and the problem would be eliminated on the subsequent exposure.
Because the image sensor on a digital camera is reused for every exposure any dust that settles onto it must be removed or it may result in a spot to appear on every image. While the problem is not overwhelming near DSLR's when it occurs it is VERY DIFFICULT to remove the dust (and it is immensely easy to wreck the sensor if done improperly). Some film photographers own discovered that the old technique of blasting the dust with "can air" or using some types of brushes or cloth to remove dust can damge the sensors, requiring costly repairs.
Olympus introduced a "Dust Reduction" system with their first DSLR, the model E-1, and have included it in every model they own manufactured. It is very influential and IMO the best solution offered so far. When I first told a semi-pro friend who used a Nikon system about the Olympus dust downgrading he said, "No way!" He be shooting a lot of horse shows, where on earth dust is a big problem, and had encounter significant problems with dust on his sensor/images.
So the answer is that dust is a problem that can be exceedingly significant, particualrly if you shoot in throaty environments or change your lens constantly. I hold seen a little reviewers who have commented that dust narrowing should be a standard feature on adjectives DSLR's with interchangeable lenses.
Hope this help. Email if you have more question or want additional feedback.
EDIT: Additional comment within response to "Where does the dust go, anyhow?" On the Oly cameras the sensor chamber have a dust collection strip at the bottom that collects and traps the dust.
The simple answer is that it's a nice thing to hold, but not necessary. It looks close to dSLR manufacturers are heading surrounded by the direction of including some kind of a dust removal system. The alien Nikon D300 will have such a system for its sensor. But again, I individually would not make this a decide factor when looking to buy a dSLR.
The answer above is incorrect, the D300 will have a dust shaker but the D3 will not.
DSLRs have lots of static do to all of the electronics inside, so every time you remove your lens you hold a greater chance of allowing dust inside and on the sensor, thus..spots on your prints. I get myself a Canon XTI and it come with a fact that removes the dust, check out the demos from Canon's web-site or go to www.bhphotovideo.com and survey the demos and read some reviews.
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