alberto_b

What I learned after some tries with O-GPS1 (I have a K-70, so no GPS inside) and Astrotracer function is it's very dependent from electronic compass calibration. So if possible I make the ...

I used to vote for challenges from slideshow, since I can quick view images at good resolution. I missed from challenges for a while, and now I find the message "There was a problem while recording ...

Placed 8^th in the challenge.

Placed 27^th in the challenge. Sunset at Montevecchia, Northern Italy

Placed 4^th in the challenge. Adda river, Northern Italy

A couple of days before the most restrictive lockdown. Going there by feet anyway. :)

Placed 15^th in the challenge. Great crested grebe. Adda river, Northern Italy

Placed 13^th in the challenge. Very small wild flower, probably of the family Dianthus

Placed 27^th in the challenge. Reflection in Martesana Canal - Milan, Italy

I never had problems at f8, of course, depth of field fully compensate the issue. But i can't take night pictures at f8. I bought it mainly to use it wide open and a blurry hole in an otherwise ...

Here is a link to another thread I created on this forum: https://www.dpreview.com/forums/post/62045581

I made some calculation fr a 300 mm lens and found that celestial object moves at ~ 4,5 pixel per second on a 36 Mp FF sensor or a 16 Mp APS-C sensor (moon is a bit slower, ~ 4,4 pixel/s), and ~ ...