Canon 80D pictures a overexposed

[Assaf]

i just cant get my head around it.

the pictures looks good on live view. the histogram looks fine when i take the picture its completly overexposed.
i have being told it might have something to do with the lens im using is very old (manual 50mm 1.8 olympus)
but this lens worked great with my old camera (600D)

is there any reason for why the camera is suddenly decided to give me a headache?

[Assaf]

lol yeah i already figured that one out 🙂
and its was indeed a good news 😛

[ebiggs1]

"What does olympus mean here?"

It means the lens is faulty or doesn't work with a 80D.

[Assaf]

Olympus is just the name of company made the lens (i think)

any i dont think its fulty just outdated 😞

any way i like someone already saids good thing those kind os lenses are usualy the affordable ones

[ebiggs1]

"...the affordable ones..."

Not if they don't work! A used ef 50mm f1.8 is affordable at approx. $50 bucks and they work.

[Assaf]

not sure you understood what i was talking.
i was talking about finding replacements those lens (even recent models) are relativly affordable.

 tommorow im going to get my self cannon 50mm 1.8 STM.
pritty sure this one is going to work just fine 🙂

[ebiggs1]

" tommorow im going to get my self cannon 50mm 1.8 STM.
pritty sure this one is going to work just fine "

Great, it will work just fine.  Sometimes when you try for too affordable, you wind up spending more money.

[Assaf]

i already learned that lesson... the hard way 😞

[ebiggs1]

The good thing, you learned something.  Sometimes education can be expensive, too.

[Waddizzle]

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@Assaf wrote:

indeed, i forgot to mention that i was shooting at manual

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I frequently use a manual lens in manual mode, with Auto ISO.  I always use the viewfinder to measure exposure, never Live View.  

[TCampbell]

Something to keep in mind is how the metering system works.

If you have a hand-held light meter, the light is falling directly on the meter.  There is no lens.  The meter reports the amount of light.

If you have a meter in a camera, then light has to pass through the lens before it reaches the meter.  Since an f/4 lens reduces the light more than an f/2.8 lens... the meter doesn't really know how much light is actually in the environment unless it also knows how much the light is reduced as it passes through the lens.

For electronic lenses that interface with the camera, that information is reported and the camera can properly calculate the exposure.  But for a completely manual lens with no electronic interface, the camera has no information about the lens, doesn't know the lens aperture, and can't realistically make any prediction about any exposure (not an accurate exposure anyway).

There are some manual lenses that are "chipped".  Rokinon makes lots of lenses that are comletely manual, and often they make the same version in an edition that talks to the camera.  If you use a completely manual (no communication of any kind) lens, then you would need to meter with an external light meter to get an accurate meter reading. If you have the chipped version (electronic interface) then it's still a manual lens, but at least the camera knows what's attached and the f-stop ... so it can provide a meter reading which is likely to be accurate.