Originally posted by Sandy Hancock The DA*11-18 is a sensational lens, and perfectly suited to wide field astrophotography. It's built like a tank, has top-shelf weather sealing, and the image quality is outstanding.
It will be great on your K-5, but would really shine on a KP, with its flippy screen, high ISO capability, pixel shift, etc....
Aye it had caught my eye ever since it was released. But at the time. I could not take advantage of the very nice deals I had found due to finances.
---------- Post added 02-15-21 at 01:58 AM ----------
Well considering the DA*11-18 together with a better camera is gearing the dilemma turbine into overdrive, given that for the lens price alone, and even more so if we add a KP, even the cheapest 2nd hand I did see, I am pretty close to the price of a K-1 or K-1 ii, which would without doubt be even more adapted to starscapes and astrophotography, given that my Irix 15mm f/2.4 would already be wider and faster on FF than the DA*11-18 on APS-C or even on FF.
Even on weight, if we consider astro solely, there wouldn't be any significant gain :
-K-5 iis + O-GPS1 + DA*11-18 : 1560g
-K-1 + Irix 15mm f/2.4 Firefly : 1591g
-KP + O-GPS1 + DA*11-18 : 1503g
The KP even becomes worse if we consider the poorer battery life, and would be the heaviest option if we add in a D-BG7 grip with D-LI90...
---------- Post added 02-15-21 at 02:30 AM ----------
Originally posted by UncleVanya The knock on the 18-35 f1.8 is that it has pretty poor auto focus accuracy. This isn’t limited to just Pentax. Even with the usb docking station it isn’t known for being consistent. Some people have had luck but others have tried multiple copies without luck.
According to the seller, it works fine on a K-70, so finger crossed. At worst it won't have an impact on astro use.