Sony A7r - The Light Leak (and some Photos)

by Dirk Moeller

Turns out, you can read about a camera for days on and completely miss out on a light leak problem. I read yesterday and in a thread on G+ about the Fuji X-T1 that this camera - guess what ?! - has a light leak problem. And so, was mentioned in there, does the Sony A7.

That needed to be verified, so I grabbed the camera, put on a 28 and two ND filters stacked to 4.8 in total. 60 seconds later (I didn't bother much with the focussing as you see) it was confirmed.

Damn me, that's some light leak!

Damn me, that's some light leak!

So, what to do?

Well, turns out, the solution is simple and I immediately tried it out.

There: I fixed it.

There: I fixed it.

Some people say it's caused by the spacing between the lens and the lens mount. In my case it was the space between the lens adapter and the lens. 

Oh, and here is the solution. I stocked up on these and keep them in my bags for now: hair bands. Simple as that. Put them over the connecting part, they stay there neatly and block all incoming light from the sides.

A selection of light leak preventing hair bands.

A selection of light leak preventing hair bands.

So, all is back to good and normal. As you can see here, the resolution of the sensor is remarkable, the lenses are the limiting factor.

Shot at 70mm, F8.

Shot at 70mm, F8.

100% Crop.

100% Crop.

at 35mm, something F11?

at 35mm, something F11?

Somewhat between 35mm and 50mm. Vignette added in post.

Somewhat between 35mm and 50mm. Vignette added in post.

100% crop from above.

100% crop from above.

So, a minor setback with the leak, but overall, I am still impressed and happy ;)