|Female House Finch, Carpodacus mexicanus|
|A male counterpart in the same bush|
|"Who's the fairest goose of all?"|
|Adding some more glass hasn't made this lens any less pin sharp - if you enlarge the image you can see the reflection of the city skyline in this lady Mallard's eye|
For the photogeeks, this is the teleconverter in question.
I'm using it with a 300mm f4 lens. This type of teleconverter results in the loss of one aperture stop - in other words you get half as much light into the camera - so the effective result is a 420mm f5.6 lens that remains relatively compact. I look forward to getting more practice in San Diego and on Vancouver Island over the next couple of months.