Thanks Joel,
keeping the swallows in the viewfinder is already difficult enough. I was lucky that they stayed somewhat high above the ground and were flying slowly (slow for a swallow that is) against the wind for extended periods. Once they go into a dive and hunt lower to the ground - no chance. The 5DIII did a fairly good job with the focus if the settings are right and as long as I kept the AF points on the bird. I did tweak case 6 a bit for that.
The images are heavily cropped to about 2MP. A longer lens ( I used the 70-300L) would help with the pixels on target, but I guess it would be even harder to keep the birds in the viewfinder.
Arnt
Hairy Woodpecker, from the backyard this evening
1DX
700mm
tripod
manual mode, spot metering with +1 stop of exposure compensation
ISO 3200
f/5.6
1/800
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