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Question

Evening all. I'm new to BYN and I could do with a little help :)

I have connected my Nikon D300s via USB (No bulb for me :( )

I'm trying to take 20 20s exposures, the only trouble im having is im getting an 18 second delay between shots. I have no delay set, no pause nothing. If I change it to a 10 second exposure i get a 10 second delay, 5 seconds equals a 5s delay.

Any ideas? cause 20 20s exposure should take just over 6 minutes but its taking over 10 minutes in total

 

Images below show the first image is taking the 20s exposure, the second image is the delay before the next exposure starts.

Capture.JPG

Capture2.JPG

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22 answers to this question

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Disable Long Exposure Noise Reduction in the camera. This feature takes a Dark image with the same exposure duration as the previous light frame. This dark is applied to the light in the camera before the image can be downloaded.

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Ive reset all settings in camera and gone through them 1 by 1 I cant find anything. It does seem to take along time from the finished capture to displaying it on screen. a good 10 to 15 seconds. these are only 10mb and shouldnt take that long to download, should be pretty instant.

Ive tried everything i can think of.

I want to do a star trail at my local lighthouse (Experiment) but i need a good 180 exposures at 20 seconds (1 Hour) but it's going to take 2 hours which simply wont work.

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Despite claiming you have disabled long exposure noise reduction... I would take a second look at all in-camera settings attentively.

If you have a delay equal to your exposure you have  long exposure noise reduction enabled. There are no other in-camera options that would cause this behavior.

Do a camera factory reset and try again.

Regards,

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Theres nothing else connected and I can transfer files from Camera to pc with no issues via drag n drop..

Ive already done a reset and gone through all settings, theres nothing that would cause a delay, plus while the delay is happening the camera doesn't seem to be doing anything at all, the green light which comes on while its busy is off so I have no idea 

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Just now, admin said:

Send me the log file, maybe there's an event being logged that could provide a clue.

Ill delete all logs and do that in the morning (Midnight Here) as charging the camera battery now. Thank you for the help, getting this to work would be brilliant and will allow me to purchase the software too :D

 

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11 hours ago, admin said:

Send me the log file, maybe there's an event being logged that could provide a clue.

Ill delete all logs and do that in the morning (Midnight Here) as charging the camera battery now. Thank you for the help, getting this to work would be brilliant and will allow me to purchase the software too :D

 

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Hi Danny,

I looked at the log file in more detail and there is nothing in there to find the cause.

At 11:04:18 a 20 second image was initiated, at 11:04:42 the camera SDK fired an event indicating an image was ready for download.  That is 20 seconds for the actual image + 4 seconds for the SDK to fire the event.

Once the event is fired BYN download the image immediately and once complete is logs it.  In your case the log occurred at 11:04:59 indicating that it took 17 seconds to download the image.

 

2020-05-22 11:04:18,620 [CameraTakePictureOnMessageRecieved] INFO  - CameraPropertyChangedArgs fired: MirrorLock           = '0'
2020-05-22 11:04:18,816 [CameraTakePictureOnMessageRecieved] INFO  - CameraPropertyChangedArgs fired: Tv                   = '20'
2020-05-22 11:04:18,825 [7] DEBUG - TAKE PICTURE ::: Shutter(MANUAL) Cable(CameraUSB) Av(1.8) Duration(20.0) Iso(1600) Quality(RAW) Mirror(0) SaveTo(PC)
2020-05-22 11:04:42,606 [5] DEBUG - NIKON EVENT --> OnDeviceOnImageReady(1,type[1]) fired

2020-05-22 11:04:57,853 [ReadWeatherCenter(Normal)] DEBUG - No weather provider configured.
2020-05-22 11:04:59,204 [CameraTakePictureOnMessageRecieved] INFO  - Timespan 40.603
2020-05-22 11:04:59,448 [ProcessCapture(Normal)] INFO  - Loading image file : C:\Users\Danny\Pictures\BackyardTEMP\Download\img_1.NEF
2020-05-22 11:04:59,451 [ProcessCapture(Normal)] INFO  - DCRaw.exe -c -e -T "C:\Users\Danny\Pictures\BackyardTEMP\Download\img_1.NEF"
2020-05-22 11:04:59,462 [21] INFO  - Temp folder:     C:\Users\Danny\Pictures\BackyardTEMP
2020-05-22 11:04:59,462 [21] INFO  - Download folder: C:\Users\Danny\Pictures\BackyardNIKON

 

Is your camera connected into a USB hub?

 

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Danny,

I'd suggest that you take one more look at the In-Camera Image Processing Controls, as it could be that something is adding extra Pre-Processing Time before your D300 signals to the SDK that an Image is Ready-for-Download.

You've already said that you've Disabled LENR (Long Exposure Noise Reduction) - GOOD.  Is there any other Noise Reduction setting to Disable - High ISO Noise Reduction??

Your D300 is an older Semi-Pro model that offered some of the first significant In-Camera JPG Image Processing - Sharpening, Contrast, etc - each of which might take the Onboard Nikon Processor a second or so to apply to the Embedded JPG.  Try turning these OFF (or Zero'ing) to see if you gain back any time.

If you have the Compressed NEF output, you might want to Disable that too.

While NIKON marketted the D300 as having Advanced Imaging Speed, it's likely that NIKON (and the SONY Sensor the D300 contains) were Optimized for Shutter Clicks, allowing the follow-up Image Processing to continue with the Buffered Images.  Nowhere did they make much effort to address any issues of "Image Delivery Speed" to the "afterthought" of Tethered DSLR Control such as the "neglected" NIKON SDK.

 

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