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Messages - rguk

#1
Camera-specific Development / Re: Canon 50D
September 01, 2014, 02:47:50 AM
Quote from: ayshih on August 30, 2014, 04:24:40 AM
I'm not familiar with this issue.  Are you using exposure override?

Yes, without exposure override enabled I can't change the aperture at all even in standby. With exposure override enabled I can adjust the aperture while in standby but not while recording in either H264 or RAW. In the stable build (and TL) I'm able to adjust the aperture but it does result in a brief pause in the video while doing so but still nice to have the ability to for any emergency adjustments needed. Camera is in 'M' mode.

On a side note I've also just noticed that in this nightly I'm using the blue LED doesn't turn off when you stop recording in RAW!

#2
Camera-specific Development / Re: Canon 50D
August 22, 2014, 04:20:31 AM
Finally got round to trying out the latest nightly and actually shooting and processing some RAW video for once (I've only been doing h264 video) so I stuck the camera out the window:



Seems to work pretty well :). Workflow was raw_rec - MLVMystic - DNG - Adobe Lightroom (I use it for stills anyway) - 100% JPEG - VirtualDub (couldn't be bothered loading Premiere) - GoPro Cineform codec to AVI - Adobe Media Encoder to MP4 - Youtube.

Lens: Olympus OM 28mm f/2.8 Zuiko

Now, I realise there was some additional info required back when I mentioned this a few months ago but due to my day job getting in the way I've not had much chance to mess about with stuff. I still notice I can't change the lens aperture while recording is taking place either in RAW or H264. What's the latest on this? Is some more info/testing still required? I'm aware that on the 50D (with stable or tragic) adjusting aperture (or zooming a lens with variable aperture) causes brief pauses in the video as the lens stops down but having the option would still be nice, especially if shooting documentary style and you walk into an unexpectedly bright area. I'm aware a variable ND could be an option but it's not so good if you're needing to make adjustments in relatively low light situations and want all the light you can get until such times it's too much and you need to stop down. I have a couple of manual lenses with aperture rings that get around this, but it's my Sigma 10-20mm that I really want the ability to adjust the aperture on the fly again.

Sort of related: when trying to come up with a workaround I noticed if you try to adjust the ISO using the thumb stick shortcuts while recording the camera locks up and requires a battery pull. I then set them to aperture/shutter adjustment but still the aperture had no effect.

Amazing work as always guys though. Once all this festival madness is over here I'm taking a break away and hope to spend some time shooting some RAW clips.

Cheers
#3
Camera-specific Development / Re: Canon 50D
March 30, 2014, 10:33:08 PM
Quote from: ru31jan on March 30, 2014, 02:47:44 PM
So I've also got the above issue with not being able to adjust aperture and so on with the wheels while in Liveview. I have to go to the exposure page of ML to adjust.

Also I now have VERY pink frames while processing the MLV files with raw2cdng. I did now have this before with a third party modification I will not mention here. Does anyone else have this?

For me I will not be switching to Nightly just yet.

Glad to hear it's not just me. Could you confirm that if you adjust the aperture while in live view (in a version that does let you do it) that the live view freezes briefly which also affects recordings? I've still not had any confirmation of this from anyone.

Thanks
#4
Camera-specific Development / Re: Canon 50D
March 28, 2014, 09:27:45 PM
Alright, I think I've determined that live view juddering and frame drops while changing aperture while recording is a hardware limitation and that the 50D is essentially useless for manually riding the exposure with a EF/EF-S lens and that it's only possible with a manual lens with aperture ring. If this is wrong then someone please correct me.

That aside, I notice in the stable build and in a certain 3rd party fork that I won't mention (the last time I did, the thread got wrongly moved to an area of the forum I have no access to) I can adjust the aperture (or other exposure settings) while recording video (H264). This doesn't seem to be possible in the latest nightly, using the camera wheels do nothing other than change the indicated value on the top LCD. Exposure override is enabled and exposure lock isn't on. If I enable Av adjustment on the joystick, the camera locks up if I attempt to adjust them while recording. If I reboot the camera and try to use the joystick again to say set the ISO, sometimes the display corrupts and flashes and the camera requires a reboot again. If this is all unclear I can take a video of the problem.

Aside from that, very happy to see the 50D back in the mainline nightly builds! I have a variety of lenses and CF cards for any testing required. Fastest is a Komputerbay 64GB 1000x.

Rob
#5
User Introduction / Hello from Scotland
March 27, 2014, 03:35:08 PM
Been using M(Tr)agic Lantern since late last year having picked up a 50D second hand. Been lurking on here as a result but have only got around to posting today. Need to get round to trying unified again now that the 50D is supported in the nightly builds again :).

Lenses:

Canon 18-55mm f/3.5-5.6
Canon 50mm f/1.8 II
Olympus OM 28mm f/2.8
Olympus OM 135mm f/3.5
Sigma 10-20mm f/4-5.6
Sigma 70-300mm f/4-5.6

For audio recording I use a Tascam DR-07 MkII

Thinking about chucking a Nikon 24-85mm f/2.8-4 IF D into the mix for general purpose video too. Any thoughts on that welcome...