Hi Chris,
I believe that the focal length is still 500mm, but the field of view is
equivalent to that of a lens of 750mm. The glass doesn't change, but
it sees less because of the cropped sensor.
We have what I have always heard referred to as an English Sparrow, with
fewer stripes and a black throat. Then our common Sparrow is around,
with fewer stripes and a lighter throat.
Jim Nichols
Tullahoma, TN USA
On 2/18/2018 11:43 PM, ChrisB wrote:
Presumably, Jim, that’s an effective focal length of around 750mm – with that
sensor.
That little bird looks quite similar to the House Sparrow over here.
Chris
On 18 Feb 18, at 22:33, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
With the shoulder stock for support, I decided to see what I could do with a
longer lens combination. I added the Leica 2X Extender to the 250 Telyt-R,
giving me a reach of 500mm. I spotted a twin-jet on the usual route to
Atlanta, and then saw a Song Sparrow sneaking through the grass and leaves,
daring me to spot him. I have one shot where he is looking me squarely in the
eye, but liked this one better.
Atlanta bound:
http://www.gallery.leica-users.org/v/OldNick/20180218-DSCF6370.JPG.html
<http://www.gallery.leica-users.org/v/OldNick/20180218-DSCF6370.JPG.html>
Sneaky Song Sparrow:
http://www.gallery.leica-users.org/v/OldNick/20180218-DSCF6378.JPG.html
<http://www.gallery.leica-users.org/v/OldNick/20180218-DSCF6378.JPG.html>
Both are cropped, of course.
--
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