hanhait

Don't expect miracles. Maybe the focal length was not properly transferred, you may need to set it manually. Old glass, manual lenses with fixed focal lengths, that you must input manually, and ...

Can it also be some kind of 'busy bokeh', resulting from some software sharpening effect, or combined with an atmospheric lens effect as Karlsson mentioned  ?

True it is not so nice, although not really disturbing for me. I suppose even within this objective it will depend on the focal length and used diaphragm. For a different objective it will be ...

I found it on his 'news' part, scroll back all the way to February. A handful of statements and opinions that now and then make some sense (pixels aren't that important) now and then suggestive ...

I think the astrotracer displaces the sensor, but maybe does not rotate it. As the stars have a different speed dependent on their position I think it is rather impossible to have no trails corner ...

Please share some of your considerations and motivations with us so we might learn something.

This is not true. The review gives a comprehensive evaluation of the cameras capabilities, wherever possible against general standards that make a comparison with others possible. The reader is ...

There is no free lunch here, some possibilities: 2x teleconverter (easy, but optical quality will drop) have body with more/smaller pixels (getting the maximum out of the lens) reverse the lens on ...

the 60-250 is not exactly walk-around, and where are the pentax 17-70 and 16-85 and the sigma 17-70 ? You can fiddle with numbers for ever but also use your gut-feeling.

Normal focusing is mostly ok, but in live view it is more miss than hit. Manual focusing in (enlarged) live view is very adequate, especially in good light.

Discussed here many times: Pentax 17-70 or 16-85; the 16-85 newer, maybe bit sharper Sigma 17-70: cheaper than Pentax, bit brighter, closer focus, maybe bit less edge-sharpness compared to Pentax ...

I'd welcome all new features added to the new K-5 (i.e. small and quiet) -like APSC flagship.

I suppose so (I'd call it deconvolution). As it is known how the diffraction has blurred the image, the inverse mathematical operation can be applied to de-blur it. This will work well on well ...

I use one quarter of what the astrotracer indicates as maximum exposure (depends on objective focal length and part of the sky captured). I use ISO 1600 at maximum as it is said that the dynamic ...

Officially it keeps its settings, even when switched off. To my feeling, considering the remaining errors it makes anyhow, up to some 50 km there should be no significant changes. Still I ...

Can well be, does a normal compass work at that place ? Can you calibrate it in a non-iron area in the neigborhood ?

Maybe it is better with the K3II, but a frustration of the use of the astrotracer with the K5 is that you cannot use the interval timer to take several exposures automatically. After every ...

Don't see any problem, very detailed. Bit chromatic effects in the hairs, quite some noise, nothing worrysome.

I think the camera logics is that in astrotracer mode, although you have to put the camera to "B", the bulb mode does not mean bulb, but it exposes just the tme you input in the astrotracer menu.

..hower version 4 does not recognize the 16-85 lens. Version 5 has some strange things in the windows opening in the Laboratory mode where version 4 has a custom mode that omits that. Version 5 ...