Originally posted by luftfluss Congrats on the screwdrive conversion! That adult eagle is very nice.
Something additional I think I should add, as Des asked me about it. This is the "discuss your long lenses" part!
If you use the 1.4x AF adapter with the DA* 300mm
and K-1, there is definite vignetting. The 1.4x allows the lens to focus, instead of the adapter. That's why I used the 1.4x instead of my 1.7x.
It is my understanding that the f series 1.7x adapter does all the focus work, and one needs to manually focus close to your subject in order for it to function properly. I've not tested it
with my DA* 300mm to verify that yet.
Before someone rushes out to get the Pentax DA 1.4x adapter to use with the the DA* 300mm
and K-1, please look at the view below to see if this is acceptable to you.
This is the original unprocessed image. You can see thumbnails of some of the images I took, along with the processed thumbnail of the image I posted earlier here.