Been trying to avoid asking this but.....
Posted 10 June 2013 - 02:37 PM
Posted 10 June 2013 - 04:26 PM
What changes from 30 sec exposures timed vs. 30 sec exposures in bulb mode if the settings are the same?
i was hoping to tag onto this question as well...should one be in "bulb" or "manual" setting on the camera...or is there any difference. sorry for tagging on..hopefully thats allowed
Posted 10 June 2013 - 04:40 PM
on my Rebel XT (350d) i have to use a shutter cable to get longer than 30 seconds via bulb mode. i made a serial control cable to achieve this.
using just the shutter cable connected to a laptop running DSLR shutter i would set the camera to manual, set all settings on the camera how i want them and set it to bulb. all the shutter cable can control is opening and closing the shutter, thats it.
i now use BackyardEOS. with BYEOS i have to have a usb cable AND the serial shutter cable connected and camera set to manual mode and PC connection mode. no other setting on the camera matters as BYEOS takes over full control of all of them and i set what i want in it.
Posted 10 June 2013 - 06:27 PM
I also know the just because you set up iso and exposure settings in manual, when going to bulb they do not transfer over. Bulb will take the settings of the shutter release or intervolometer, even tho it will show the manual settings in the camera windows. This threw me for a loop the first time i used my intervolometer. i was trying to set up a 30 second exposure and the intervolometer was set for 1 min. the camera kept taking 1 min exposures even tho the windows indicated 30 sec was set.
This may be what is affecting you. Hope this helps
Posted 10 June 2013 - 06:50 PM
i've had AMP glow show up in some of my images before, it shows up in the bottom right hand corner only i'm pretty sure.
Posted 10 June 2013 - 07:04 PM
To me if all is equal there should be no difference.
Let us know.
Posted 10 June 2013 - 07:49 PM
Posted 11 June 2013 - 07:10 PM
i capture using byeos. the question just popped into my mind when I read the posters thread...Im sure I have captured in both the manual and bulb setting...just curious if there were any benefits of using one camera setting versus the other
Only the fact that in Manual you can only take 30 second subs. If you want longer than you will have to use bulb.
Posted 13 June 2013 - 01:33 AM
Sparky123 its fine with me if you jump in, the more I can learn the merrier.
Posted 13 June 2013 - 01:34 AM
Posted 13 June 2013 - 01:43 AM
I then did the exact same thing except the ONLY difference was that I was in bulb mode and I timed 30 sec on the stopwatch (yes it was 30 sec hah) and that single change resulted in a completely overexposed photo of the sky. So perhaps what you were saying about even though I had settings, BULB mode didnt use them for whatever reason. And if that is the case how the heck do you set your camera for longer exposures if it ust does what it wants.
By the way great info everyone, I appreciate it and keep it coming. I like learning!
Posted 13 June 2013 - 09:54 AM
When I accidentally leave my screen on, it gives me a glow like amp glow.
Posted 13 June 2013 - 10:42 PM
Have you tried changing the sub length and and iso settings when in bulb? can you achieve a decent exposure or does it always overexpose?. Also you should cover the view finder with the cover that comes with the camera. (that little thing that is usually on the camera strap. it will help prevent light from going thru the view finder and over exposing the image.
Posted 14 June 2013 - 07:04 AM
I will have to take 2 pics and post them here for an example. its gotta be something simple I'm just not seeing.
Posted 14 June 2013 - 10:50 PM
Posted 15 June 2013 - 12:50 AM
Posted 15 June 2013 - 01:09 AM
I just noticed the “ISO 3200” is way too high! Back the ISO off to between 800 and 1600 and try again. I like the way ISO 800 worked for me. Stack and adjust levels and histogram to 1/3 and you should be good to go.
Posted 16 June 2013 - 07:27 AM
What I found was that in the data was that when I have the camera set for 30 sec the data reads ISO-280 NOT 3200 like I have it set in the camera. Now when I shoot BULB it uses exactly what I had set thus, it was overexposed due to the high ISO.
So now my problem is why even though my camera is set to manual does it use its own ISO when set to timed exposures? Wow, that blows me away because I normally don't look at the data and I thought I have been shooting in 3200 when I haven't been.....well that's frustrating hah.
Posted 16 June 2013 - 07:29 AM
Posted 16 June 2013 - 07:35 AM
ISO-280 though its set for 3200
Posted 16 June 2013 - 07:36 AM