Skip to main content

Dust Bunnies and sensor dirt on full frame DSLR cameras


Here's an image which, although not particularly interesting is one I wanted to work on.

I needed to use a small aperture of f22 for this shot to slow everything down as I didn't have a neutral density filter, and that's where the trouble starts because a  small aperture shows all the dust bunnies.

At a glance, there's only a couple of dust spots visible, but once I look at the top half of it in Lightroom.

Every one of those stands out like a sore thumb at 100% and not only does it fail my own QC, it would fail Alamy QC, and get me a short uploading ban.

This is what it looks like as I remove, or clone out the spots.


Then, a little more work and I have the finished image.



It's not a keeper for me, unfortunately, as it is, as I said earlier, a bit boring, but it's all good practice.
Dust bunnies will always be a problem with DSLR mirrored and even mirrorless cameras even with the utmost hygiene practices and care whilst changing lenses, and, for me, it's why I may go the way of mirrorless compacts (think the full-frame Sony RX1, RX1R) when I next change my main gear.


Canon 6d 10 seconds ISO 100 @ f22. Poniente beach and Peacock Island, Benidorm, Costa Blanca, Spain.

Comments

Popular posts from this blog

Image sizes for Alamy stock photographs

Almost every week there seems to be a post in the Alamy Forum in which a new contributor is struggling to understand the Alamy submission requirements for file size. The website info is quite clear... Q. What file size do I need to upload? A. We need a JPEG file size of over 17MB when uncompressed (this is likely to have a compressed JPEG size of 3-5MB). Opening a JPEG in an image program such as Adobe Photoshop will show you the uncompressed (open) file size. This still doesn't seem to answer the questions which are posted in the forum, so the best solution is to always use this small standalone App from  Braeside Communication Services. As you can see, it shows the compressed size and also the uncompressed size. It will show a warning if the file size falls below the threshold. The two files shown in the image above are fine to upload to Alamy. Download here...  AlamySizeCheck A donation to  David Anderson  would be nice.

Timelapse of the MSC Kwangyang

Timelapse of the MSC Kwangyang MSC Kwangyang? Yes, it just happened to pass by on the horizon line at the end as I was shooting another timelapse, this time with my Canon 6d DSLR. I was hoping that the clouds would change into a storm front and become more dramatic, so I chose that particular view with Peacock Island near the horizon line, and, nothing much happened! For this timelapse, I took 940 images in RAW with 5 seconds between each one using a 75-300 EF lens and the Magic Lantern Intervalometer which is loaded on startup from the SD card. It was mid-afternoon so there isn't a problem with big changes in exposure, allowing me to use ISO 100 for quality with an f-stop of 6.3 which is about the sweet spot for this particular lens, and a fast shutter of 1000th of a second as it was on a tall tripod at full zoom in a breeze. These RAW files are imported into Lightroom with my user preset which has a couple of small tweaks to correct the very bad CA and fringing I g

Staying legal with photos posted on your own internet posts.

You've written a fantastic post about your visit to France and just need a couple of pictures to help pad it out and be more interesting, after all, 'a picture is worth a thousand words', so do you just grab one from a Google search? This 800 pixel image of Chateau Chenonceau is big enough for social media and blog posts and is only 176kb so it loads fast for your viewers. Yes you can... but be prepared for the owner to come after you for infringing their copyright after they find it being used without permission on your internet platforms. The best way to obtain pictures to use within your own web content, be that on Facebook, Blogs or any other internet platform (within reason), is to buy a licence which will cover you for the use. I allow my own images to be downloaded for such uses in two sizes on my website here...  mickflynnimages . They are all provided instantly, do not contain a watermark and are ideal to illustrate your stories and articles. News