View Full Version : K10D Limit of Bulb Exposure


Randall Cipriano
10-26-2007, 10:50 AM
I experimented last night how long the K10D can hold bulb with a single fully charged DLI50. :Grin:

I got 4440 seconds before the camera saved the image and turned itself off. That's 2 hours 14 minutes. Unfortunately since it was a near full moon last night the sky just burned out even at f/22, ISO100. :( Anyway, I was more interested on testing the limit of bulb than getting a picture. It was interesting though that after I turned the camera back on again the battery indicator was still at full and I could still take pictures not greater than 32 seconds. Anything longer the 32s, the camera shut-off automatically. It did save the images first before it shutdown.

I don't think the grip would've helped since the K10D doesn't use it at the same time. Anyhow, I'll make sure to try it out too. :)

Paeng Bonafe
10-26-2007, 10:53 AM
I experimented last night how long the K10D can hold bulb with a single fully charged DLI50. :Grin:

I got 4440 seconds before the camera saved the image and turned itself off. That's 2 hours 14 minutes. Unfortunately since it was a near full moon last night the sky just burned out even at f/22, ISO100. :( Anyway, I was more interested on testing the limit of bulb than getting a picture. It was interesting though that after I turned the camera back on again the battery indicator was still at full and I could still take pictures not greater than 32 seconds. Anything longer the 32s, the camera shut-off automatically. It did save the images first before it shutdown.

I don't think the grip would've helped since the K10D doesn't use it at the same time. Anyhow, I'll make sure to try it out too. :)

hmmm.. sounds good for star trailing.. :D

Randall Cipriano
10-26-2007, 10:55 AM
hmmm.. sounds good for star trailing.. :D

Yes, it's on my things to do now. :) Lovely fishy star trails. :D

totie.bruno
10-26-2007, 10:57 AM
2 hours 14 minutes? that's 1 movie watching :D

Roland R. Roldan
10-26-2007, 10:57 AM
I experimented last night how long the K10D can hold bulb with a single fully charged DLI50. :Grin:

I got 4440 seconds before the camera saved the image and turned itself off. That's 2 hours 14 minutes. Unfortunately since it was a near full moon last night the sky just burned out even at f/22, ISO100. :( Anyway, I was more interested on testing the limit of bulb than getting a picture. It was interesting though that after I turned the camera back on again the battery indicator was still at full and I could still take pictures not greater than 32 seconds. Anything longer the 32s, the camera shut-off automatically. It did save the images first before it shutdown.

I don't think the grip would've helped since the K10D doesn't use it at the same time. Anyhow, I'll make sure to try it out too. :)

================================================== =====

This is the main reason why I cant use DSLRs for deep sky photography. Usually it takes about 8 minute exposures for a single nebulae to be visible on prints.

Randall Cipriano
10-26-2007, 10:59 AM
Here's Bob West's night photos. Great star trails using a K10D, *istDS2 and film!

http://www.flickr.com/photos/bob_west/sets/72157594286186396/


First shot on his K10D. Great break-in shot. :)
http://farm2.static.flickr.com/1251/842179985_9fafc36090.jpg
Camera: Pentax K10D
Exposure: 1700 sec
Aperture: f/5.6
Focal Length: 10 mm
ISO Speed: 100

http://farm2.static.flickr.com/1201/1316588821_dffc7c708c.jpg
Camera: Pentax K10D
Exposure: 5074 sec
Aperture: f/5.6
Focal Length: 10 mm
ISO Speed: 100

Paeng Bonafe
10-26-2007, 11:14 AM
Here's Bob West's night photos. Great star trails using a K10D, *istDS2 and film!

http://www.flickr.com/photos/bob_west/sets/72157594286186396/


First shot on his K10D. Great break-in shot. :)
http://farm2.static.flickr.com/1251/842179985_9fafc36090.jpg
Camera: Pentax K10D
Exposure: 1700 sec
Aperture: f/5.6
Focal Length: 10 mm
ISO Speed: 100

http://farm2.static.flickr.com/1201/1316588821_dffc7c708c.jpg
Camera: Pentax K10D
Exposure: 5074 sec
Aperture: f/5.6
Focal Length: 10 mm
ISO Speed: 100

ill give it a try when the new moon comes :)

jay jallorina
10-26-2007, 11:16 AM
burning out the camera huh? hehehe....an excuse to get the K10D super? :D

jay jallorina
10-26-2007, 11:17 AM
even without the moon in the sky, very long exposures of the sky will tend to burn out given that there is still too much scattered city light bouncing of the low atmosphere. its best to try this stuff in the mountains.....or anywhere far from urban areas/civilization.

Randall Cipriano
10-26-2007, 11:21 AM
burning out the camera huh? hehehe....an excuse to get the K10D super? :D

Nyehehe if there was such a thing... lens muna :p (trans: Give me money! :Grin:)

aaron_paggabao
10-26-2007, 11:30 AM
hmmm...lens lust. randall, nice shots man, is a DA* trails...?

Randall Cipriano
10-26-2007, 11:31 AM
hmmm...lens lust. randall, nice shots man, is a DA* trails...?

Nope, Bob West used a Sigma 10-20EX on his shots there (ahem, Paeng.. :D)