Interval timer
I want to capture some star trails with my Canon 80D. I've been practising using the interval timer but it's not working as I expected. I set the camera to take 99 RAW exposures of 25 seconds at 5 second intervals. After about 10 exposures the camera stops shooting. Battery fully charged and plenty of memory on the SD card.
What I do is set the exposure to 30 secs and put the camera to do continuous shooting and lock the shutter open with a remote cord.
Then when one exposure is finished it immediately starts another, the buffer will not fill as it has 30 secs to clear.
You can leave this running til the card is full or the battery goes flat,
That is with a Nikon I should think that Canon is the same.
Dave
Then when one exposure is finished it immediately starts another, the buffer will not fill as it has 30 secs to clear.
You can leave this running til the card is full or the battery goes flat,
That is with a Nikon I should think that Canon is the same.
Dave
Quote:What I do is set the exposure to 30 secs and put the camera to do continuous shooting and lock the shutter open with a remote cord.
Then when one exposure is finished it immediately starts another, the buffer will not fill as it has 30 secs to clear.
You can leave this running til the card is full or the battery goes flat,
That is with a Nikon I should think that Canon is the same
Yup thats how I have done it with my Canon
Thanks. I'll give it a go.
What does the camera do, just stop, no error, ,is it filling the sd card?
If not, its likely doing what you wanted, so carefully go back over the settings; use longer that 5 seconds as the interval, - try 15 as an example and see if it works. Also try a large JPEG rather than RAW. This rules out write time to the SD card. Use a fast SD card also.
The 80 had this built in so you dont need external intervalometers, so a bit more troubleshooting?
If not, its likely doing what you wanted, so carefully go back over the settings; use longer that 5 seconds as the interval, - try 15 as an example and see if it works. Also try a large JPEG rather than RAW. This rules out write time to the SD card. Use a fast SD card also.
The 80 had this built in so you dont need external intervalometers, so a bit more troubleshooting?
Could it be that your camera does some long exposure noise reduction? That would mean half of the shots it took were black frame for the purpose or Nr causing it to miss the cue to take other shots.
After the first 25 second exposure the camera would immediately do a noise reduction 25 second exposure mucking up your shooting cycle.
Look for "Long exposure noise reduction" in the custom settings and turn it off.
After the first 25 second exposure the camera would immediately do a noise reduction 25 second exposure mucking up your shooting cycle.
Look for "Long exposure noise reduction" in the custom settings and turn it off.
Thanks for all your ideas. I'll look into them and continue practising.
OK, so I tried locking the remote shutter release to do continuous shooting and it seems to have worked very well.
An old thread, I know, but on an interesting subject. I'd be keen to know what lenses people use for star trail shooting; I'm guessing wide-ish, and focussing not really an issue, but would welcome thoughts.
Also, given the suggestion of a 30s exposure time, I assume you'd use the lowest ISO available, but would you also maybe need a grey filter or similar ?
Also, given the suggestion of a 30s exposure time, I assume you'd use the lowest ISO available, but would you also maybe need a grey filter or similar ?
