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Messages - LEVISDAVIS

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126
Tragic Lantern / Re: Raw video on 50d and 40d
« on: June 08, 2013, 11:22:44 PM »
Pushing 67MB/s no problem with Komputerbay 64GB 1000x... Had to go through every setting and look at each and every sub-menu. I turned off anything not related to video... I'd be more specific but there are so many menus and adjustments... However, it's good to know there is a that much room for writing files, right?

127
Tragic Lantern / Re: Raw video on 50d and 40d
« on: June 08, 2013, 10:12:53 PM »
I have also had issues with aliasing, specifically with ropes on a golf course. There is one way to bring back the aliasing ever so much... In ACR adjust your settings for Chromatic Abboration - - Defringe - - All Edges... - - >It will help take the edge off the color fringed aliased areas.

128
Tragic Lantern / Re: Raw video on 50d and 40d
« on: June 08, 2013, 09:54:13 PM »
Re-reporting about testing 3 Canon 50D cameras. This morning after going through a series of ML feature sets, specifically global shutter, histogram, and 3:2 display mode, I was able to pass by the 52MB/s recording limit. I am using a 64GB 1000x Komputerbay card, the same card that was writing continuously in a 5:3 aspect ratio on a second Canon 50D camera. Anyway, in my last post I had mentioned that the serial number looked like a much later serial number... It made me wonder if there was some type of Canon factory quality control issue... Rest assured, this is not the case. I had a breakthrough in recording tests after adjusting the ML feature sets and seeing a difference in the write speed per second and also the number of frame captured before the recording stopped. In other words, I was fine tuning the camera. And after shooting about 20 videos in less than 3 minutes and referencing the write speed and frame per second number the camera suddenly began recording upwards of 60MB/s. Interestingly, the tests before, using the same setting as that of the second camera, were only producing a maximum of 54MB/s write speeds. I believe that I was able to reach this recording speed by turning on and off global shutter, histogram, and 3:2 aspect live view mode. It's like the monster woke up by toggling these feature sets on and off. They are now currently turned on. And I have no trouble recording at any resolution.

Sorry that I don't have an exact answer as to why the camera wasn't recording continuously past a 2:1 aspect ratio, however, the camera is now capable of writing a 4GB file in 3:2 aspect ratio with 3-4 bars on screen at a stable 67MB/s write speed.

Got the day off from work... Will be testing away!!! Woohoo! Thanks ML! Thanks everyone!

129
Tragic Lantern / Re: Raw video on 50d and 40d
« on: June 08, 2013, 11:38:15 AM »
... Had the same experience. The first time I shot raw I was also able to view independent clips and delete. In addition, at one point, I was able to adjust through multiple shots and actually choose which file to playback.

... Also, I have now tested three different Canon 50D cameras. One camera in particular, having what appears to be a late model serial number will not record past a 2:1 aspect ratio w/ a 64GB 1000x Komputerbay card. Using the same card, I am able to shoot 5:3 aspect ratio continuously on what appears to be a much earlier model number. It's even recording steady at 64MB/s. Finally, had another 50D that featured a great deal of stuck pixels. I applied a 5 minute manual sensor clean, same technique that repaired the early model 50D model with nearly 40,000 click, however, I was not able to test the camera with the 64GB 1000x. I'm not sure what to do for those who have this issue... Might be an issue for other? It's good to know that this camera was recording 2:1 continously on a Komputerbay 128GB 1000x. Based on these tests, yes, the 64GB 1000x is much faster. However, there may be variations in camera technology within the 50D production period.

Camera settings are specifically reduced for optimal resolution during raw recording... Been following each of our posts and have compiled a number of test shots. Finding the camera to perform stunningly when practicing ETTR (exposure to the right)... Always finding incredible dynamic range and very minimal noise, including ISO 3200.

Having difficulties getting past the built in "screen-like" grid pattern when viewed at %200 or more. It appears to be the foregoing limitation to adjusting the image's sharpness. In many ways, it also creates a "max resolution" appearance to the image. It is a 14-bit image, however, this grid pattern is more of a step back from 14 bit. It's almost as though its a 10-bit limitation?

Can't say enough about how exciting this development is! Seems there is so much room to express cinema photography that it's time to truly say, "This is the way to go!" Way to go everyone! Thanks so much ML Team & Testers!

Canon 50D May 28th Build... Nikon Nikkor AI-s lens kit, Komputerbay 64GB 1000x cards.

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