Originally posted by sanvic15dj The exposure was 1/100 of a second. The above posted image was just a sample where in the smudge is very prominently visible. It happens when I capture a static object using a tripod.
How did you focus? Auto focus? Or manually focusing with liveview at 16x digital zoom?
The bloom, as someone else said, looks like when you miss the focus by just a small margin.
Also, the 18-55 kit lens is not the sharpest lens out there - what you show is reasonable in expectation for that lens. You are shooting wide open at F5.6 and 55mm, when good performance is after 1 or 2 stops closed (F8/F11 in this case).
If you had a faster lens like a DA 50mm F1.8, you could shoot at F5.6 and get a much sharper image out of it.
Edit* actually - based on the skin just below the nail, I'm pretty sure you've front focused just a little bit. In addition, due to it being a zoom, the hood will not protect against stray light as well as the wide end of the lens. Thus at close focus and wide open, the lens will lack a bit of contrast and exaggerate the blooming. A solution to that would be to expose the image darker and bring it up in post process.