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32

The dust isn't on the lens — it's on the sensor. Dust on the lens will not resolve so clearly. To check for it quickly, set your aperture to the smallest your lens can support. (Small apertures have large f-numbers, like f/22.) This will keep the light striking the sensor to a straighter angle, which in turn will make the dust (which sits on filter layer ...


18

Several models of zoom lens are designed in such a way that they likely inhale dust and may vent it into the body of the camera. How big a problem this is remains debatable (see this discussion for example). Also, most lenses are not externally dust sealed so air and fine particles are likely to make their way in over time. For these reasons it probably ...


13

Yes. I just got back from a trip shooting at the Wildlife Refuges. I didn't remove the lens, and in fact, hadn't removed the lens for about the last 3,000 images. The last 300 images have a very distinct dust spot that appeared somewhere during the last day's shoot. Fortunately, in a place where I can crop it out without impacting the images. Dust on a ...


10

When attached to the camera and with the front lens cap on the camera will be pretty well protected from dust. Protecting against fungus is a matter of keeping everything dry. Placing everything in a sealed plastic bag is only a good idea if the temperature is kept warmer than when the bag is sealed. Air can hold a certain maximum amount of moisture ...


10

I live in a very humid place. So my equipment has a high risk of getting fungus. What I do is, not keep it inside. Yes, you heard me right :). I use my camera frequently and expose it to sun every now and then (sunlight is a good anti-fungal solution). Apart from that when you are not using your camera for long, make sure you have the silica gel (active) ...


8

Other than the obvious advice of avoiding switching lenses when you're in a an old barn or a flour mill or other particularly dusty environment, the main thing is be fast. And the way to do that is to practice. With modern automatic sensor cleaning, dust isn't the plague it was in the earlier days of digital SLRs. So, don't be afraid to just start changing ...


8

That's definitely fungus, and it's not going to go away. The first question to ask is it affecting your image quality. If it is not then control the problem, always keeping the lens in a dry environment. You could get it professionally cleaned, but honestly for that lens you could buy a replacement for a lot cheaper. You may also want to read about some ...


8

It's highly unlikely that this many pixels on the sensor would become "dead" in quick succession, or in this pattern (groups of pixels, rather than individual pixels). This is clearly dust directly on the sensor. I also see indicators of dust on the inside of the lens (larger, out-of-focus areas that are lighter than their surrounding pixels). For ...


8

Looks really bad. Normally, dust gets on top of the stack of optical filter which sits above the sensor. It then shows as small blurry disks which get smaller and darker at narrow apertures because they are close to the sensor but not directly on. From your example, I would guess that you have dust that entered below the filters and is directly on the ...


8

I ran a few more tests. Here are the results: No change to sensor: f/2.8, 1/6", ISO 200 Blue specks (similar to the top speck in the sample pictures) f/10, 2.0", ISO 200 White specks (similar to the bottom speck in the sample pictures) Manual sensor cleaning: f/2.8, 1/6", ISO 200 Blue specks in the exact same location, but smaller f/10, 1.8", ISO ...


7

It is true. Any effects from small amounts of dust in the lens will be negligible. There will be a considerable amount of dust between the sensor and any given subject, all the time - what difference will a little more in the lens make? You will probably never find a used lens anywhere on Earth that does not have a some dust inside it, especially zoom ...


7

Yes completely normal and nothing to worry about. As you are aware all SLR / DSLR cameras have a prism / mirror / eyepiece, which can collect dust just as easily as any other part of your camera. I can only assume that you do not keep your D7100 in a particularly sanitary conditions - as my D70, D300 and D800 have never suffered with viewfinder dust to a ...


6

Looks like dust to me. But, it'd be on the sensor, not the lens. You're shooting into the sun - and if you're using an auto-exposure mode, then your camera likely stopped down. Stopping down exacerbates seeing the dust in your photo. Want to really see how much dust there is in there? Stop down to f/16 or f/22, fill the frame with a bright light source, ...


5

You didn't link to any specific product but from what I can find by googling "650d silicone case" those products provide no water/dust protection whatsoever. The big opening in the camera that let dust/water in are, in order of importance: The lens mount The battery door Various connectors (USB etc.) Buttons and dials Any case that only covers some of the ...


5

I've had that problem on my 400d. If the spots do not show up if you photograph a white wall with at F22, you have dust on either the focus screen or the viewfinder glass. First clean the glass and see if the spots are gone. Then check if your camera has a interchangeable focus screen. Then you can take it out to clean it. I believe yours does not, so you ...


5

I'm a bit worried about a potential scratch to my d7000 sensor as shown in the rather grainy image below. Scratching the sensor itself is unlikely to happen. The sensor itself is typically behind a (hard to see) element that acts (in part) to shield it. However, upon reducing the aperture the line becomes more blurry which is indicative of a dust spot ...


5

The air is full of dust. It's floating around everywhere all the time. When you open the lens in a dusty environment (which is to say "every environment that isn't a clean room"), dust gets into the light-box of the camera. You didn't ask, but this is why seems silly to advise people to point their cameras down while changing lenses. Observe how dust moves ...


5

I agree with mattdm, dust in images are usually found on or near the sensor. They are usually visible at small apertures, like F16-32. Some thoughts and points to consider on this topic: You can avoid problem apertures with aperture priority. Dust usually isn't visible in photos taken with apertures larger than about F8. Check for dust proportional to how ...


4

Is dust on the sensor normal? Unfortunately, yes. One of the few disadvantages of digital vs. film is that the recording medium isn't changed every time we swap out a roll of film. Over time dust will find its way onto your sensor. There are several precautions you can take to minimize the impact of dust on your sensor. Change lenses as rarely as possible, ...


4

For two reasons: It would add to cost, complexity and chances of the camera failing. What happens when the mechanism fails and the curtain stays closed just before you shoot the crucial shot of a sports match (which you had to change lenses for)? It wouldn't work. As stated in my answer to the question you linked to, camera bodies aren't manufactured in a ...


4

As the comments to the original question indicate, it depends on exactly which camera you are talking about. Nikon lenses have a mechanical connection for aperture control that is spring loaded at both the camera end and inside the lens that could suffer damage if disconnected while in the wrong position. If the tab on the control lever in the camera is ...


4

No, this isn't a huge deal. Aside from the 1x00D series, other Canon camera models that did not have the sensor-shake/cleaning feature include: 1Ds, 1DsMkII, 1D, 1DMkII, 5D (classic), 10D, 20D, 30D, 300D (Rebel), and 350D (XT). I shot with the 350D (it was my first dSLR) for four years, I changed lenses like a mad thing, often forgetting (gasp! horror!) to ...


4

Dust removal using a dust mask can be done with G'MIC with the "Inpaint [Multi-Scale]" filter. The easiest way to use G'MIC is as a plugin for GIMP, Krita, or Paint.NET. However, it is available as a command-line utility. Convert the dust image into a bitmap with pure red and white (or transparent) pixels. (G'MIC uses pure Red as the default mask color.) ...


4

Perhaps. Your supplied example doesn't show obvious dust. You can get a 'clearer' view by stopping down to f22 and taking an out-of-focus shot of a featureless wall or clear sky. Shutter speed doesn't matter. Any debris on the sensor will show up nicely. Note that debris on the rear lens surface -may- also show up, albeit softer...


4

This is a fungus. It should be ok to take pictures with that - but only you can check that. Take some test shots of blank surfaces with different apertures, focal lengths and light coming from different angles - if they look ok and there's nothing extra i nthe shots: great! If not, well... (with a telelehoto lens like this one you could see nothing at all) ...


3

With the focus at infinity, rays hitting the sensor are more parallel which makes the edges of dust appear crisper. This probably helps with the filter Pentax uses to produce the dust alert image shown on your camera. This is the same reason why depth-of-field is larger when focusing further, so what the camera is doing reaching for a huge depth-of-field. ...


3

I have three main tips to keep dust out of your camera body. Change lenses in the cleanest, most calm environment possible. Change lenses as infrequently as possible, and consider using a super-zoom or all-in-one solution if the conditions are very adverse. Know your equipment, how to change it correctly, what lines up with what, and be able to do it in the ...


3

If you have Adobe Lightroom, you can use the Spot Removal tool in one photo and then copy the settings to all the other photos. When copying the settings, uncheck all and leave only "spot removal". The spot removal tool in Lightroom is great and should fix all photos automatically, but you can always go to that special photo and make sure it's ok and make ...


3

This happens and while it has no effect on image-quality, it is quite distracting. It looks like you have quite a few and its a good time to clean it. They make special cleaning tools for that which is basically the same as a lens pen but smaller. The key is not to wet your camera because it is not weather-sealed. Otherwise you can even just rinse it which ...


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