GF1 ISO setting AUTO default in video

Long Rob

Member
As far as I can tell from my experience and from RTFM-ing, the GF1 defaults to AUTO ISO when recording video, regardless of other settings. Has anyone found a way to defeat this, so that the user can decide what ISO to use with video?

Thanks.
 
This is how I shoot video on a GF13:

First off, if you're serious about shooting video on this camera, use the latest PTool and hack the firmware for LPowell's latest 50Mbps setting. If you don't hack the firmware, or if your camera is of too new a vintage to be hackable, stop reading, none of the following will be possible. The stock GF1 is capable of surprisingly excellent video just by using the Creative Movie mode, but it's almost entirely automatic and very little can be controlled manually. Fine for home videos, not so much for pro work. To me the firmware hack is less about increased bit rate and more about enabling fully manual control during video shooting. Being able to optimize the camera settings makes more of an immediate difference than a bit rate that can spike if needed.

I shoot video with legacy manual Canon lenses exclusively.

Creative Movie mode.

Go into the menu and choose Shutter Priority in the manual movie setting that PTool enables.

Manually set shutter speed to 1/60 for NTSC 30p, 1/50 for PAL 25p. Some guys like setting shutter to the actual frame rate, i.e. 30 and 25, and while this does give you a bit more light to work with, i don't like what it does to motion blur.

ISO set to 100, always. If it's really dark and my fast glass can't save the day, I'll try 200 and then bite the bullet and go 400, and know that I'll be spending time in Neat Video NR plugin later. The GF1 just isn't a great low light shooter for video.

Nature film mode with sharpness and NR dialed back to -2 (aka off).

Wind cut filter OFF. The onboard audio sucks but enabling this filter makes it suck a lot more, and it doesn't really help if you're getting wind blasts. So it stays OFF.

So basically you want to set your hacked GF1 to Creative Movie mode, ISO 100, shutter speed 1/60 for NTSC and 1/50 for PAL, Nature film mode with sharpness and NR at -2. I've tried every combination of mode and setting I can think of on this camera and this is the setting that gives me the cleanest and most film-like output.

Back in the days before the hack there were a few workarounds that enabled somewhat manual control of the GF1 for video, like shooting in A-priority with manual glass and using AEL to lock exposure, but the settings I use now thanks to Vitality and LPowell give much, much better results.
 
Ok. In the movie mode I saved as custom, I get control of both shutter speed and aperture. Does this mean I'm not using the creative movie mode and not getting the cleanest signal from the sensor ? (I still have access to nature, sharpness and NR settings)
 
This is how I shoot video on a GF13:

First off, if you're serious about shooting video on this camera, use the latest PTool and hack the firmware for LPowell's latest 50Mbps setting. If you don't hack the firmware, or if your camera is of too new a vintage to be hackable, stop reading, none of the following will be possible. The stock GF1 is capable of surprisingly excellent video just by using the Creative Movie mode, but it's almost entirely automatic and very little can be controlled manually. Fine for home videos, not so much for pro work. To me the firmware hack is less about increased bit rate and more about enabling fully manual control during video shooting. Being able to optimize the camera settings makes more of an immediate difference than a bit rate that can spike if needed.

I shoot video with legacy manual Canon lenses exclusively.

Creative Movie mode.

Go into the menu and choose Shutter Priority in the manual movie setting that PTool enables.

Manually set shutter speed to 1/60 for NTSC 30p, 1/50 for PAL 25p. Some guys like setting shutter to the actual frame rate, i.e. 30 and 25, and while this does give you a bit more light to work with, i don't like what it does to motion blur.

ISO set to 100, always. If it's really dark and my fast glass can't save the day, I'll try 200 and then bite the bullet and go 400, and know that I'll be spending time in Neat Video NR plugin later. The GF1 just isn't a great low light shooter for video.

Nature film mode with sharpness and NR dialed back to -2 (aka off).

Wind cut filter OFF. The onboard audio sucks but enabling this filter makes it suck a lot more, and it doesn't really help if you're getting wind blasts. So it stays OFF.

So basically you want to set your hacked GF1 to Creative Movie mode, ISO 100, shutter speed 1/60 for NTSC and 1/50 for PAL, Nature film mode with sharpness and NR at -2. I've tried every combination of mode and setting I can think of on this camera and this is the setting that gives me the cleanest and most film-like output.

Back in the days before the hack there were a few workarounds that enabled somewhat manual control of the GF1 for video, like shooting in A-priority with manual glass and using AEL to lock exposure, but the settings I use now thanks to Vitality and LPowell give much, much better results.

Thanks for taking the time to answer, but I must be missing something.

I have hacked my GF1 with the latest ptool version, albeit with the lpowell 40Mbps patch, and I'm using the same settings you listed. I have ISO set to 100, but as soon as I start recording, the "100 ISO" icon in the LCD display changes to "AUTO." (I take it that when your refer to the "Creative Movie mode" of the GF1, you have the control dial on the top of the camera set to "M," as there is no "Creative Motion Picture" mode, per se, on the GF1, only on the GH!.)

So what am I missing?
 
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I think you're either not using the latest PTool version for your hacked firmware creation (it's currently 3.5d), or you're forgetting the most important step of all, which I neglected to include in my original post because I thought it was common knowledge:

Every time you want to shoot manual control video with the hack, you need to press the menu button, go to Motion Picture/Exposure, and choose "S" for Shutter-priority. Then when you exit the menu, you will be able to set shutter for 1/60 (or just plain 60 on the LCD screen), and ISO100 will stay ISO100 when you begin shooting.


Thanks for taking the time to answer, but I must be missing something.

I have hacked my GF1 with the latest ptool version, albeit with the lpowell 40Mbps patch, and I'm using the same settings you listed. I have ISO set to 100, but as soon as I start recording, the "100 ISO" icon in the LCD display changes to "AUTO." (I take it that when your refer to the "Creative Movie mode" of the GF1, you have the control dial on the top of the camera set to "M," as there is no "Creative Motion Picture" mode, per se, on the GF1, only on the GH!.)

So what am I missing?
 
I think you're either not using the latest PTool version for your hacked firmware creation (it's currently 3.5d), or you're forgetting the most important step of all, which I neglected to include in my original post because I thought it was common knowledge:

Every time you want to shoot manual control video with the hack, you need to press the menu button, go to Motion Picture/Exposure, and choose "S" for Shutter-priority. Then when you exit the menu, you will be able to set shutter for 1/60 (or just plain 60 on the LCD screen), and ISO100 will stay ISO100 when you begin shooting.

No, I didn't know that.

Thanks!
 
Every time you want to shoot manual control video with the hack, you need to press the menu button, go to Motion Picture/Exposure, and choose "S" for Shutter-priority. Then when you exit the menu, you will be able to set shutter for 1/60 (or just plain 60 on the LCD screen), and ISO100 will stay ISO100 when you begin shooting.
After you follow shaveblog's detailed instructions, you can save your settings to one of three Custom slots on the camera. Once you do that, the camera will automatically load all settings whenever you select that Custom slot, and you won't need to go into the menu to select the type of Manual Movie Mode.
 
And the final piece of the puzzle is in place. Thanks LPowell, for reminding me to do this. Much easier than going to the menu every time.

After you follow shaveblog's detailed instructions, you can save your settings to one of three Custom slots on the camera. Once you do that, the camera will automatically load all settings whenever you select that Custom slot, and you won't need to go into the menu to select the type of Manual Movie Mode.
 
After you follow shaveblog's detailed instructions, you can save your settings to one of three Custom slots on the camera. Once you do that, the camera will automatically load all settings whenever you select that Custom slot, and you won't need to go into the menu to select the type of Manual Movie Mode.

Gets even better, thanks.
 
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