Dust on lens?

[sxipro]

Hi, I have taken a picture of the sky to check for dust on my sensor and there is quite a few spots on the picture, is this dust, i have had a look at the lens and it is ok.

I cannot really understand how it has got this bad as i make it like a military operation to swap between lenses, could someone have a look at the link just to confirm it. This is the full size version :(

many thanks

Cal

http://farm4.static.flickr.com/3585/3401908233_e4cf401702_o.jpg

ps not sure if this is the right place for this post

[400dabuser]

What camera have you got?

[Pete]

It's a 400D

And yes, it's a classic case of sensor dust. Just invest in a rocket blower and puff the dust out. It's something we all have to deal with and it's quite normal.

[400dabuser]

You could use the dust delete data, not that I needed it

[Nighthound]

Yes, only sensor dust. Dust on the lens glass is too far from the focal plane to be visible. Like yourself I take precautions, but dust always finds its way.

[midnight_rider]

Click here (http://www.cleaningdigitalcameras.com/methods.html)
It may be helpful. And yes it does look like a dirty sensor.
No matter how fast you change your lenses or what your method it dust can find its way to your sensor

[sxipro]

Yeah its a 400D, I stil cannot believe I have so much as I am really meticulous when it comes to swapping lenses over. I will invest in one of those items. I reckon I might not have noticed it most of my Photogrpahs are shot in AV that is the first time I have went to such a high aperture.

If I used the dust delete data that wouldnt remove it would it..

Thanks Guys

Cal

ps Can someone put a link up to one of these blowers if it ok

[Pete]

It looks like this...

http://www.giottos.com/Rocket-air.htm

[midnight_rider]

You could use the dust delete data, not that I needed it

I have found that the dust delete data feature is not so good. Especially when you have a camera that shakes the sensor everytime you turn the camera on and off. As soon as some of the dust moves the data is no longer correct ( as far as I know).
It has been a lot easier to just clone it out in PS for me personally

[sxipro]

Click here (http://www.cleaningdigitalcameras.com/methods.html)
It may be helpful. And yes it does look like a dirty sensor.
No matter how fast you change your lenses or what your method it dust can find its way to your sensor

Thanks for that, will have a shop about :)

[400dabuser]

If I used the dust delete data that wouldnt remove it would it..




Correct, but a lot safer than trying to clean it

[JWright]

No matter what you do, dust is going to find it's way on to the sensor. I went to an airshow weekend before last and I never removed my 100-400 from my 40D the entire weekend, even back at the house. Saturday morning the sensor was perfectly clean and by Sunday afternoon I was showing spots in my images.

[PhotosGuy]

No matter what you do, dust is going to find it's way on to the sensor. True, but it doesn't have to show up. You shot your test shot at f/32, which isn't great to use unless you absolutely need the depth or extra slow shutter speed in daylight. Very small apertures may/will degrade the image, depending on the glass, & your lenses are usually sharpest 2-3 stops up from wide open.
So here's my solution:
Some personal views on Sensor cleaning. (http://photography-on-the.net/forum/showthread.php?t=184448)