[michalko99]

That is a good question, guess some experimenting is in order (that or research I am sure there is a site somewhere out there dedicated to this stuff!)

Now, if I could find a good high hill I would try out the fisheye again. center it at polaris, crank it to 10mm and see what happens. Of course it would have to be a very dark hill to get anything interesting.

for tonight I am done-there will be no star shooting. Strong fog started to lay down and sky is full of clouds-I cannot see anything up there. I am packing tripod and cable shutter switch back to backpack
Maybe tomorow...But when I am looking on my PDAs screen, weather forecast doenst show anything good for upcoming days. Hopefully it will change.

BTW. I am very curious for normal picture taken with 12-24. In future I want to buy super wide lens, but honestly, I dont like fisheye effect. Is this lens producing flat images, or these strange?

[pxpaulx]

BTW. I am very curious for normal picture taken with 12-24. In future I want to buy super wide lens, but honestly, I dont like fisheye effect. Is this lens producing flat images, or these strange?

It is a rectilinear lens, so the lines are straight, not distorted like the fisheye. Towards the edges though, this can give a somewhat stretched look - not distorted, but not exactly like reality either. I previously owned the sigma 10-20mm and approaching 10mm the edges are stretched well beyond reality. The 10-17 and 12-24 are actually a very nice compliment to eachother - at 17mm the fisheye distortion can be minimized as long as straight lines go through the center of the frame. The angle of view of the 12-24 at 12mm is about 100 degrees, while the fisheye, though distorted, at 17mm is also right at about 100 degree angle of view (going from there all the way to 180 degrees from corner to corner).

[builttospill]

I tried this last weekend and here's what I got with my K10D and the 43mm Ltd at f/2:

[netuser]

I just took this picture a few hours ago. It is the Milky Way near the Eagle (Aquila) constellation. For us folks in the northern hemisphere, that is facing south around 10pm central.

Camera: K-7
Lens: Pentax FA 35mm f/2 @ f/2.4
Exposure: ISO 3200, 10 seconds each
No tracking
Time of shot: 10:32 pm
Location: Within city limits, facing south
8 exposure stack using deepskystacker (freeware)



Oh,one more thing: I would listen to nightfly's advice. I think he knows what he is talking about.

Can non stacked images and stacked images be printed WITH quality on let's say 40*60 cm size?

[JeffJS]

michalko99, That looks fantastic.. Not really what I would expect out of the K20d and admittedly never really attempted it with mine when I had it.

Hinman, if those are your failures, I'd Love to see the Successful shots.

[Ex Finn.]

I had forgotten about this thread.

[netuser]

Bump, anyone care to try to answer my question?

[Ex Finn.]

Will try, what is your question?.
Just found it, sorry, no can help.

[stlind]

one question where i couldnt really find an answer: whats the longest exposure that is safe for my kx? is it better to shoot more with say 1min, or can i get a decent picture if i just use a shutter time of 5mins?

when will the sensor overheat? i think i´ve read of people that simply took pictures for 4 hours by manipulating the trigger with something, but that doesnt sound too healthy for my cam..

(sorry for all the questions, but i really want to try that and its been raining for some time now...)

[Ash]

Don't worry. The sensor will not explode if overheated with a long exposure.
Then again how long is too long? I've had no ill effects from multiple 40+ minute exposures on my K10D and no evidence of new hot pixels or sensor failure...

I'm sure your K-x will do fine for more than an hour of exposure if you wanted - it's getting the batteries to last that long is the trick...

[stlind]

thank you, i guess i´ll just give it a try.

now i only need dry weather.