Exposure and 24p 1/50

[Mojito]

Hey guys,
Pretty new to DSLR filming so advanced apologies.

I have my 7D set up at 1080p 24p 1/50 ISO 125 using a Tokina 11-17 and a Craft Works MKII ND Filter and i am having to max out the ND Filter to get the exposure on target in sunny weather.

In very bright sun (aimed in the sky), it becomes slightly over exposed, but i am unable to correct this whilst keeping the 24p 1/50 settings.

Is there something i am doing wrong or is it that the ND Filter is not good enough for what i am using it for?

Thanks.

[that1guyy]

Well what aperture are you using? Increasing the aperture (making the number bigger) will let less light in there fore there will be dimmer exposure.

[ClockworkNinja]

The rule of thumb is f/8 and forget it for sunny weather, but anything between f/7 and f/11 should be good enough depending on your other variables as far as your aperture goes.

[TheArtist]

Originally Posted by ClockworkNinja

The rule of thumb is f/8 and forget it for sunny weather, but anything between f/7 and f/11 should be good enough depending on your other variables as far as your aperture goes.

This is not true for every lens. It's a general rule for when you don't know.


for the Tokina (it's the 11-16, not 17) f2.8 is pretty crazy already. But in sunny time you can lower it (don't go after 11) and if it's still not enough (supposing your iso is at 100), don't hesitate to bring down the shutter speed. The 180 rule is not really important.

[ClockworkNinja]

Originally Posted by TheArtist

This is not true for every lens. It's a general rule for when you don't know.

Why do you think it's called a "rule of thumb"?

[Mojito]

Sorry guys, yes its the Tokina 11-16 and i totally forgot that i set it to F2.8 and the 7D was locked on that with the switch.

[TheArtist]

Originally Posted by ClockworkNinja

Why do you think it's called a "rule of thumb"?

I know, just wanted him to know settle for that and make some research concerning his specific lens

[wheatgrinder]

shutter speed is not important? It has a serious impact on the look of motion in your footage. Shutter speed should not be used to accommodate lighting.

[ClockworkNinja]

Originally Posted by wheatgrinder

shutter speed is not important? It has a serious impact on the look of motion in your footage. Shutter speed should not be used to accommodate lighting.

The problems he described sounded like it was related to aperture rather than shutter speed. I think you might have misread something?

[TheArtist]

I think he was refering to me as I said that.

Higher shutter speed just takes off a bit of the motion blur. I've seen so many people on Vimeo ignoring the 180 rule and having super beautiful footage.

[wheatgrinder]

Sure people can set what ever SS they want, but it does have an effect on motion in the image. It should be manipulated for a creative purpose, not to correct for lighting conditions. Otherwise untended consequences will result. Imagine what happens if you adjust SS to make up for LOW lighting..

[Gonzo_Entertainment]

DO NOT TOUCH YOUR SHUTTER SPEED FOR PURPOSES OF FIXING EXPOSURE ON A SUNNY DAY. IT SCREAMS AMATEUR HOUR AND SHOULD NEVER BE DONE UNDER ANY CIRCUMSTANCES.

[TheArtist]

I hate hard rules. There are cinematographers who don't even know it or simply disobey it.

As long as you don't go above 1/125, you can get away with it. But usually, closing the aperture is plenty. It's very rare to reach F11 and still have an overexposed image.

https://vimeo.com/5249682#

[Gonzo_Entertainment]

You DO NOT know what that footage really looks like at the time you are shooting it. You will potentially get into the edit and it will look stroby and odd, especially cut with footage you shot at the correct shutter speed.

Around 100 years now, that's how long people have been shooting films. Rules don't become rules for no reason. There are times it might well be OK, but to say that it really doesn't matter and just don't worry about it, is really really really bad advice.

[TheArtist]

I confess that the "it's not important" is quite ill advised. I knew better.