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the raw video in 60D with MLV_REC works great

I am shooting in canon 720P mode, so that it is outputting 1728 X 694 (sensor is 5184 X 3456), which is 1/3 of 5184 and 1/5 of 3456.

meaning that stretching 694 lines (by 1.6666X) to 1156 lines gives a perfect 3:2 ratio.

if I want 1728 as a 16:9 ratio, the correct number of lines needed is 1728 / 16 X 9 / 1.666 = 584 lines

right now the aspect ratio is assumed 1.4X in MLV_REC, it might works for other sensor, but not right for 60D. I cannot fit exactly 584 lines in my record, I should either leaving a thin black lines on top and at the bottom of my video, or capture more lines, which will reduce the number of frame it can capture.

please fix it to 1.666X for 60D sensor, thanks

I have been using the AF-On for focusing. Disabling half press to start AF.

when my kids is running around, I use servo, when they are not moving quickly, I use one shot for better precision focusing.

however, the switch between two mode is slow, with my 60D, I have to leave the view finder, click the focus button, move the wheel.

I know 7D has a function to use the depth of field preview button to switch. that is a welcomed function, however, if I can assign it to AE-lock (*) button, so that AF-on perform one-shot, (*) perform servo, that will be even better.

there was another similar request but not getting much attention to, I hope mine can be considered, thanks
http://www.magiclantern.fm/forum/index.php?topic=4036.msg22228#msg22228

I am using 60D, have been spending too much time to take a picture and then go through the menu and set the custom white balance.

it will be good if we can just point to something white/grey and click a button, and then it sets the custom white balance with reference to that area.

certainly I am not taking raw video, I need quick setup of custom white balance so I can start taking video as soon as possible.

just like OSK-E3 designed to encrypt photo.

would ML perform some kind of encryption to the photo?

and that decryption can be done when it is copied to computer and with proper decryption key.

instead of dual ISO for different exposure in one single picture.

would it be possible to have dual shutter speed in one single shot? certainly it is not possible with mechanical shutter curtain. But with the electronic first curtain, would it be possible?

with this, in very bright light condition, we can shoot at ISO 100, half of the lines are at 1/4000, half of the lines are at 1/125.

I am not sure how much benefit to the picture quantity comparing to use dual ISO in this situation.

I was having a hard time shooting scene with saturated red channel.

like my son wearing a bright red jersey playing soccer on concrete field on a sunny day. Or tungsten lighting indoor where ISO 3200 is just good enough with f1.8 and 1/50s

I am not 100% sure if the red channel is totally saturated, but it is hard to bring back the contrast.

in the soccer scene, I should bring down the exposure and saturation a lots, this will give the jersey better looking (not just a flat all red region), however, the face will be too dark.

in the tungsten low light scene, no matter how I change in the white balance setting, the color of skin is still unnatural, either toward orange color, or making it all dull without any red.

I wonder how to setup the dual ISO to help in such scenario. Is it doing negative EC to make sure red is not clipped in the lower ISO, and make a +3 or +4 EV in the dual ISO to get the other channel expose correctly?

Just out of curiosity, the Sigma USB docking is like connecting a Sigma lens to computer through USB.

can an EOS camera acts like the dock and do similar things?

and how much is a canon EF lens be programmable/fine tune electronically?

just read the post about skipping lines in a frame to reduce the save time.

would it be good to have something like 24 fps interlaced? could be good for slow SD writing.

however, I don't know how to process such frames in post processing, maybe make it in the raw2dng proocessing, so it generates interlaced frame at full resolution.

Is it very similar to port ML to Ixus/Elph/Powershot as they run DIGIC also?

I think many of the latest camera are using this SONY sensor, which offer readout mode at 4K
http://www.sony.net/Products/SC-HP/cx_news/vol70/pdf/imx117cqt.pdf

seems the SX270, SX280 are using this sensor.

sounds like a hardware function provided by olympus, but wonder if this can be implemented/mimic it with multiple shot and real time stacking preview.

to describe the function, it is simply showing what you get in a bulb exposure, and you can decide when to stop the bulb exposure judging by the preview at the screen.

if in ML, can we set the camera to give preview of the stacked sequence. once you first take a shot and hold the shutter button, it continue to give you a previous, and when the next frame is captured, the preview shows the stacking with the previous frames in the sequence.

in dark environment, you will see the picture getting brighter and brighter if you continue the exposure.

Canon is actually blocking any shutter speed higher than X-sync if flash hi-speed sync is not turned on (or not supported)

some third party remote trigger is cheating the camera, that the attached flash do support hi-speed sync, so the camera allows choosing shutter higher than X-sync.

In such setup, the flash unit works normally as a ETTL flash without hi-speed sync, pre-flash, metering and fire just normally (as a flash with no hi-speed sync). The camera thinks the flash is hi-speed sync enabled, pre-flash, metering and trigger the flash as if it is a hi-speed sync flash.

the benefit of this is we got ETTL flash metering, better flash reach as the shutter is higher, use less flash battery power as hi-speed sync is eating a lots of power.

the drawback is we might see a dark shadow at the bottom of the frame, it is the second shutter curtain blocking the flash light.

For 60D, the X-sync is 1/250. Hypersync at 1/320 will give a very thin shadow at the bottom, almost invisible. Hypersync at 1/400 will shows a wider shadow, but if used carefully, avoiding foreground object be in that area, it is totally usable.

I am not sure how this can be done with ML. can it force the Flash settings of shutter sync to hi-speed sync? even if the flash is not supporting hi-speed sync.

Or overriding the shutter after flash metering is done? so that camera set the shutter at 1/250, then preflash, then meter, and before the camera actually start taking the picture, ML overrides the shutter to 1/320. The flash is triggered and shutter works as 1/320.

Another function I am dreaming is the second curtain Hypersync. When using hypersync, there will be a dark shadow at the bottom of the frame, which could be annoying when shooting daylight scene with people. If hypersync can sync with second curtain, the dark shadow will be at top of the frame, which usually is distant background or sky in the scene. So the dark shadow is essentially no visible.

I am having a 60D with ML.

And I also have a 1D mark III, love the safety shift on ISO.

to make this ISO safety shift work, I will need to setup these
min aperture
max aperture
min shutter
max shutter

for my daytime fill flash, I will use Tv mode, fixing the shutter at X-sync 1/300. no min/max aperture is setup, so it will be wide open if there is no over-exposure.

I set the ISO at 50.

In very bright light, the ISO will be kept at 50, aperture will be stopped down to avoid over-exposure.
When shooting in shade or with less light, aperture will keep wide open, and the ISO will be shifted to a higher value to avoid under-exposure.

This really help a lots since I don't need to care about the ISO and make change in every scene.

One thing to note with 60D:
When flash is switched on, if ISO is set to Auto, it will be kept at 400, so Auto ISO with flash is useless.