Have you ever looked in front of a projector as it is projector? What do you see?
What you see is little white dots of dust floating through the air. Lots of them. Dust everywhere. Normally invisible, but visible under bright light.
And that is exactly what happens under bright light when you take close-up shots with a flash.
And as I pointed out yesterday, this needs a lot of work to remove. View this at full resolution (click through until you see it at maximum size) to see all the dust spots:
And this turns into this after a lot of manual work:
And I mean a lot of manual work. Here’s the healing brush tool and what I did with it to produce the image above:
The moral of this post: As I said yesterday, it is well worth cleaning objects before you shoot them: otherwise you have a lot of work, and work like the healing brush work above will cause Lightroom to run out of memory and other resources.
Want to learn all the cool tricks of Adobe Lightroom? Or the use of flash, so you can use a little camera (or your big DSLR) to take shots like the above? Contact me (firstname.lastname@example.org) and I will help you. In person, at your location or mine; or through Google Hangouts, wherever you are in the world. Worth every moment of your time, I promise. Photography is an amazingly fun and rewarding endeavour, whether as a hobby or professionally.