Could you drive me in the WFM function pleaase?

S

Steve Arenam

Active member
Hi,
i know that for most of you guys this would be a silly question but i wanted to know if you could help me using the WFM button.


Really thank you
 
If you mean finding it, it's on the inside part of the camera that the LCD covers. Flip the LCD out and look for the WFM button. Push...bingo.
 
LOL, i know it's over there! But i'm coming from the old sony camcorders where there was no such an option!
I would like to learn how it works

thx a lot
 
Its an aid to geting good exposure: it displays how the camera electronically sees the image in terms of exposure.

Treat it like a rev counter, over rev and you damage the image

There are 5 solid horizontal lines look at the middle one and find the one directly below it and directly above it.

The lower solid line represents blacks or very dark areas in your picture,
the upper solid line represents absolute peak exposure or the brightest bits.

When you adjust the Iris control you will see the waveform (the strange white wispish image) rise/fall in height. Now if any of that waveform goes over the upper solid line the detail is lost i.e. it looks burned out no detail, so its a good idea to try to keep the waveform between the two extremes to retain as much detail as possible. Also each shot will have the best signal to noise ratio etc.

But also remember there is art to this, some people will adjust and expose every scene to fit between these horizontal lines, that may not be a good thing, if you have multiple shots wides / close ups etc the exposure from the wide should match the general exposure of the CU twiddle too much and the shots wont match the blacks/whites in the wide shot will be different to the blacks/whites in the CU.
There are no hard and fast rules depends on what your shooting - training videos where detail might be important expose every shot for max smoke or a drama where consistency of a look is king you want to keep the levels from shot to another generally the same.
 
If you set one of the zebras at say 80% and Iris closed, as you open the Iris the wave form will rise at the wave form hits the 80% mark the zebra will appear.
I use the waveform monitor if i have the luxury of time to check my exposure, I set my zebras at 70% and 90%, whenever i am out shooting i use the 90% as an alarm that that area of the image is getting pretty hot/bright and i may over expose. It depends on the shoot, I use the 70% for white skin tone and expose peoples faces just open up the Iris and get a smattering of zebra on their face - and i know their faces are at 70%.
 
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