The Magic of Focus

[happy-kat]

Just for fun.

This short time lapse of resized jpeg images shows just how important focus is to the extent of what you can then capture with your exposures. Bahnitov mask was not used as no stars were bright enough to show in live view.

Each image was just 4 seconds in a light polluted location looking above the murk except the last image. Baader Neodymium filter used. Canon 1100d 40mm pancake lens.

7 x 4 seconds ISO 1600

2 x 4 seconds ISO 3200

1 x 60 seconds ISO 800

The final image was then tracked using a manual barn door mount.

 

 

[Alien 13]

Its odd that you cant see the stars in the liveview screen I get something between pic 7 and 8 and the very faint stuff is what I use to focus on.. I do agree that focus is critical in being able to detect the very faint stars.

Alan

[happy-kat]

Only with this pancake lens, the 50mm is ok. Actually the kit lens also doesn't show stars for me either.

[happy-kat]

You can take images with a static mount or the most advanced mount going but if you don't have focus you don't get an image.

[TareqPhoto]

Amazing, that is why my last images i tried with focus i couldn't have enough stars in the frame, so maybe next time i will try with precise focus if possible and see the difference.