Not been in here for a while apart from a quick glimpse, a combination of being very busy and a death in the family.
However the past couple of days have been spent shooting one of my favourite birds, a pair of Spotted Flycatchers have a nest in the porch roof of a local church and are busy feeding young. usually one goes in and out quickly; but this one likes to pose with its catch.
Several times it was too close to focus so after getting the shots of the whole bird I added tubes and went for some prey ID shots, this is one of them.
2009:07:07 12:18:28
Hide, tripod and Wimberley head.
Canon EOS1DsMkIII 600mmf4IS 1.4X and 36mm extension tube (840m)
1/200 sec, f/7.1
Mode: Av
Metering: Evaluative
ISO: 400
AF mode: One-shot AF
Drive: Continuous (high)
White balance: Auto
Flash: Off
File size: 22.9MB
Image size: 3744 x 5616
Color space: AdobeRGB
Saturation: Normal
Sharpness: 0
Contrast: 0
Tone: Normal
Custom Functions:
CFn III-13: AF point
RAW conversion DPP and resize, sharpen and slight crop to lose vignette from extension tube Adobe CS3
"just out of interest how much does the 36mm tube reduce the minium focus?!
Just to correct myself its 37mm (25mm and 12mm stacked)
The calculation sugests 3.36m, in practice I think its nearer 3.8m, max distance focus is about 20m but it depends whether you measure to the sensor/film plane or the lens nodal point.
Discussion
21 repliesHowever the past couple of days have been spent shooting one of my favourite birds, a pair of Spotted Flycatchers have a nest in the porch roof of a local church and are busy feeding young. usually one goes in and out quickly; but this one likes to pose with its catch.
Several times it was too close to focus so after getting the shots of the whole bird I added tubes and went for some prey ID shots, this is one of them.
2009:07:07 12:18:28
Hide, tripod and Wimberley head.
Canon EOS1DsMkIII 600mmf4IS 1.4X and 36mm extension tube (840m)
1/200 sec, f/7.1
Mode: Av
Metering: Evaluative
ISO: 400
AF mode: One-shot AF
Drive: Continuous (high)
White balance: Auto
Flash: Off
File size: 22.9MB
Image size: 3744 x 5616
Color space: AdobeRGB
Saturation: Normal
Sharpness: 0
Contrast: 0
Tone: Normal
Custom Functions:
CFn III-13: AF point
RAW conversion DPP and resize, sharpen and slight crop to lose vignette from extension tube Adobe CS3
Brett
David
dennis
Fran
Just to correct myself its 37mm (25mm and 12mm stacked)
The calculation sugests 3.36m, in practice I think its nearer 3.8m, max distance focus is about 20m but it depends whether you measure to the sensor/film plane or the lens nodal point.
Keith.
Brilliant picture, how do you work the calculation?
Ian
Major.
Cheers,
Chris