Jim
Yes, I agree – about the FL.
There are fewer sparrows around in England than 10 years ago, I believe. It
might be to do with there being fewer insects, but we encourage them both in
our garden.
Chris
> On 19 Feb 18, at 06:05, Jim Nichols <jhnichols@xxxxxxxxxxxxx> wrote:
>
> 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.
--
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