I've commenced my K-3 Long Jump AF testing. I like to use LJ as an AF test as it's not easy maintaining focus on someone running towards the camera. I started around 5:30pm. There were some long shadows on some parts of the track. I used the Sigma 70-200/F2.8 II HSM. To stress the AF I only used f/2.8-3.2. With the K-5 I would have been too scared to do this with someone running directly at the camera and would have chosen f/6.3-7.1.
The results were inconsistent. Some sequences were good with every shot in focus, some had 1 or 2 OOF, some had most OOF. I'm not that disappointed. I have to work on the AF settings and my technique.
But what I immediately noticed was that the good shots were better than I'd ever seen from the K-5. I did not expect the difference to be that significant, but it was.
There were a number of changes that could have contributed:
- This was entering golden hour shooting time.
- I had to upgrade from SilkyPix Developer Studio Pro 4 to 5 to handle K-3 shots.
- I was using shallow DOF.
- I was using a 24MP camera without an AA filter.
If anything, the shots are a bit under-sharpened, and I could probably apply more sharpening. The K-5 would not have responded well to this level of sharpening – it would have cookie-cutter edges and increased harshness. But the K-3 seems to accept more sharpening without problems. The sharpening is different in PSP 4 vs 5, so this complicates matters, but my initial impression was that this new baby really can offer a visible improvement. I'll see how this initial impression holds up when I try the DA* 60-250/F4 with the K-3.
I've not tried any AF micro-adjustment yet either. So it's early days. But I'm pleased so far.
Here's a good shot, both in the original framing and with a 100% crop. I've applied the equivalent of the SP Pro 4's Natural Fine sharpening preset. As you can see in the 100% crop, the edges of the face are not unnaturally separated from the background and it looks reasonably natural. I thought the visual quality was good for a 100% crop with minimal PP.
1/1000s, f/3.2, ISO200, 128mm FL.