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Light leak into viewfinder?

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PictureThis Newbie

PictureThis

Posted
Posted

Using my A7s in summer sunshine for the first time I'm getting light somehow entering the viewfinder, making whole LCD glow uniformly and become almost unviewable. Its from left, and not the lens path at all - pictures are unaffected if I shoot thus blinded. Only suspect seem microphone aperture. Using the (inadequate) supplied eyecup, but its too internal for that to be involved. Anyone else?

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Golem Mentor

Golem

Posted
Posted

Are you sure, that it's the viewfinder? There was

a discussion on the A7 lightleaks resultung from

the mount, to be fixed with a single hairband:

 

The OP verrry clearly states that the "blown out"

finder image does NOT represent the recordable

image from the sensor. Therefor, that discussion

[and link] is irrelevant.

 

Maybe the 7S is just too much of a vampire to be

functional in sunlight ? A few more exposures to

daylight and it may just crumble into plastic dust.

 

-------------------------------------------------

 

Question, re: the OP. If you suspect any particular

openning or connector of leaking sunshine into the

viewing optics, what prevents you from just directly

testing that by blocking any such openning ?

 

Also, since the pix are not affected, then the LCD

panel should be delivering a good view even when

the EVF view looks all blown away. I know it's hard

to check the LCD in bright daylight, but this should

be the situation.

 

IF the LCD panel view is equally blown out, then I

suspect that you need to turn off the effects view

in the menu. It's possible you're using a high enuf

shutter speed to shoot at a fairly wide f-stop but

your effects view system cannot fully compensate.

IOW, I'm describing the "flip side" of that situation

where, in the dark, lowering the shutter speed no

longer delivers an image bright enuf to view.

 

 

 

`

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Karlitos Apprentice

Karlitos

Posted
Posted

It is an electronic view finder, which sees what is on the sensor. You cannot have a light leak that affects only the EVF.

It's likely to be a problem in the settings affecting how the sensor image is projected to the EVF as suggested above.

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