Showing posts with label Estero Llano Grande State Park. Show all posts
Showing posts with label Estero Llano Grande State Park. Show all posts

Wednesday, February 2, 2011

An unanticipated problem with Vermilion

Vermilion Flycatcher males are so intensely red they positively glow in the sun, which ultimately led me to have a very big problem with getting a decent image of them. Basically the red channel saturates and blocks up quite quickly, especially in situations with a lot of contrast between the sunlit head and the shaded breast, like the above. And once the red saturates too far Lightroom (and probably most other RAW processors) map the overexposed red to white. I did a little bit of masking on the head to get around this problem (which otherwise makes the bird look glossy).

The other thing I noticed is an apparent reduced level of detail compared to what I was expecting. This probably has a lot to do with the saturation of the red color in the first place, but I'm not sure if the Bayer sensor (which is RGGB, and therefore may be less accurate with pure reds and blues than it is with greens) had a role to play in this too. Ironically, I got better feather detail from shots in more overcast conditions than I got in sunlight. But with Vermilion Flycatcher I will take what I can get - they do not seem that willing to let me approach them very much, and they are quite a small bird.

Friday, January 22, 2010

Texas - Least Grebe


Least Grebe, from the boardwalk at Estero Llano SP. This one is in basic plumage - ones that I had shot at Sabal Palm as late as Thanksgiving were in alternate plumage. The boardwalk is completely exposed, so only the tamer birds are going to tolerate you here. The puffing up of the rump feathers appears to increase as the bird gets ready to dive - is it expanding its body to store more air before it does ? Other interesting behavior was watching one of these follow a Northern Shoveler and diving into it's "wake" to feed amongst the things it kicked up. I saw this more than once, so it was a conscious bit of opportunism.