GH4 "light leak"

M

minibokeh

Guest
Received my new GH4 yesterday, very impressed so far, although definitely going to keep the E-M1 since IBIS makes life so much easier.

Issue: I'm seeing a strange "light leak" at the bottom of long exposure images. Below is taken at ISO 200, 10", with lens cap on.
Questions:
- are you seeing the same (with your GH4)?
- is my camera defective?
- can I do anything to avoid this issue (blocking view finder seems futile as this is a mirror-less camera and EVF ...)

Your help is much appreciated!

<a href="https://www.flickr.com/photos/101667287@N08/15490719102" title="gh4 light leak by Moritz Berger, on Flickr">View attachment 389158"1024" height="768" alt="gh4 light leak"></a>

Full size image: https://www.flickr.com/photos/101667287@N08/15490719102/sizes/o/
 

Sootchucker

Mu-43 Veteran
Joined
Aug 9, 2012
Messages
213
Location
United Kingdom
Just did a similar 10 second exposure @ F8 on my GH4 (with the lens cap on), and it came out totally black - no light leak anywhere.

Are you sure the lens cap was on firmly ?
 

compute42

Mu-43 Regular
Joined
Apr 1, 2014
Messages
32
I have a "light leak" on the top left corner of both GX7's I have owned.. took it back to sammys camera and was told all of em have this problem to an extent. they said even the new sony alpha A7s they were testing had a bitchin' light leak
 

mattia

Mu-43 Hall of Famer
Joined
May 3, 2012
Messages
2,391
Location
The Netherlands
You also have to wonder how much this sort of thing matters - and whether a lens cap is enough to guarantee a good light seal (that's not what it's designed to do, really). My A7r doesn't have a light leak, but in most long exposure settings where it's, y'know, dark, there's no relevant light to leak in and ruin the image.
 
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