|
That's interesting about the iris causing spikes on some lens shots. I often wondered why lens shots often showed those multiple spikes.
There's a guy called Pertti who posts on the Yahoo digital group and he was very informed various lenses and often posted reviews. He would often say most lenses did not perform fully open and needed to be stopped down 2 stops. I have a few lenses as well and I found they needed to be stopped down usually.
As I recall he felt the Canon 200mm F2.8 was a good one, so is the Nikon 180ED F2.8. I like my Nikon 50mm F1.8, I also have a 85mm Canon older style that's quite good.
I have seen some hot shots with a Zeiss 300mm F4 (but no better than yours).
The bog standard Canon 18-55 ain't that bad also.
Pentax 6 x 7 lenses seem to do well.
I have a 2x Canon 105mm lenses. One I haven't used for Astrowork and that may be nice as it is quite new and is supposed to correct for the 1.6X factor for APS sized chips.
I'd love to do a panoramic mosaic of the Milky Way this winter.
Also be nice to do one in colour + Ha. Like a really full on one.
Greg.
|