So I have had this lens for about 2 weeks now and really have not taken a lot of pictures..little test hear and there for IQ comparison. Yesterday I went on a downtown walk and took some photos. Images have been great thus far but, when I went to process and HDR I noticed some what looks to be some dust spots in the sky area. This kinda stumped me because its such a new camera and I have taken the lens off at all. This morning I decided to do some testing. I shot the sky with F8, F11, and F29 to see what would happen. This was the first shot with detail enhancer applied F29 raw by VIPGraphX, on Flickr As you can see they are every where!! So I got the dust blower and thought I would blow the sensor area out in hopes that it would remove this. here are the results. F8 not to bad but yet still noticeable especially when the image is in full size view. F8 by VIPGraphX, on Flickr now F11 a little more noticeable F11 by VIPGraphX, on Flickr Now F29 the are getting smaller and darker.. I did not use the red pencil tool to circle them because there was so many of them. f29 by VIPGraphX, on Flickr Now I am not sure if this IS dust or if there is something on the sensor. I did talk to a guy at the camera shop and was told because there is no mirror the sensor would get dust on the sensor faster BUT, this fast? With not that many shots? HHHmmmmmmmm I am very familiar with dust on sensors and usually take my camera in 2-3 times a year to get the sensor cleaned up. I live in Tucson AZ and there is a lot of dust everywhere so is expected, now that being said this is a weather sealed camera and supposed to help with the mother nature. Since I got it up in Phoenix I going to have to wait until the weekend to drive up there and see what is going on. I honestly do not feel like there should be a problem this fast with dust and since there is no mirror there should not be any oil to worry about. Now I have noticed that when I blowed it and I did it more than once, many of the spots came off from the first test so I figure YES it is dust BUT, there are a few areas where they are consistent and not moving or coming off which is leading me to believe that there is something on the sensor besides dust. Just wanted to let you all know in case anyone is in the market for an A7 or A7R…..Is this a problem, just mine or ??????