Sony A7II Odd Partial Underexposure

[Krisyavorsky]

I'm new to the Sony world so I'm not sure where to even start with this.. I've used 3 Canon bodies previously and made the switch to an A7II a couple months ago. Today when I went out to shoot some photos of a friend I took a couple test photos and noticed that along the top of the frame they were underexposed, almost like vignetting but only across the top of the image. And if I turned the camera sideways to do a portrait it would be along the left hand side. So this underexposure is only happening on one side. Very odd. Here's a shot just to show what is happening.. Any ideas??

 

Also if it helps any, I am using a Fotodiox adapter w/ electronic connection to my Canon EF Mount lenses. This is the first time I've had this issue so I'm not sure if it's related to the adapter in any way..

 

 

[Golem]

Unlatch the adapter and twist it only half way

to the removal position. Shoot. See if the bad

effect changes angle ... IOW no longer parallel

to the frame edge. A change means the adapter

is to blame. You might hafta engage the "shoot

without lens" feature via the menu to do this.

 

If you have access to any optic for the camera

that does not need the adapter, shoot a test,

for obvious reason.

 

If the effect is not due to the adapter then it's

prolly the shutter blade lagging and shadowing

that edge. Choosing "electronic first curtain"

might ... or might not ... disappear the problem.

It depends on just how the blade is lagging [if

the blade is to blame]. Anywho, if "electronic

first curtain" disappears the error, then again

you know to blame the shutter.

 

 

`

[jlw518]

If you have the EFCS on, and you shoot at speeds above 1/2000 sec, you will get the effect you are describing.  It's worse with legacy and non-Sony lenses. It is noted in the manual that this can happen, by the way. 

 

What was the shutter speed and what lenses were you using when you had this occur?

 

-J

[Krisyavorsky]

Unlatch the adapter and twist it only half way

to the removal position. Shoot. See if the bad

effect changes angle ... IOW no longer parallel

to the frame edge. A change means the adapter

is to blame. You might hafta engage the "shoot

without lens" feature via the menu to do this.

 

If you have access to any optic for the camera

that does not need the adapter, shoot a test,

for obvious reason.

 

If the effect is not due to the adapter then it's

prolly the shutter blade lagging and shadowing

that edge. Choosing "electronic first curtain"

might ... or might not ... disappear the problem.

It depends on just how the blade is lagging [if

the blade is to blame]. Anywho, if "electronic

first curtain" disappears the error, then again

you know to blame the shutter.

 

 

`

WIll give this a try, thanks so much.

[Krisyavorsky]

If you have the EFCS on, and you shoot at speeds above 1/2000 sec, you will get the effect you are describing.  It's worse with legacy and non-Sony lenses. It is noted in the manual that this can happen, by the way. 

 

What was the shutter speed and what lenses were you using when you had this occur?

 

-J

Will do some research, see if I can fix it. I've been shooting with a Sigma 70-200 at 200mm and a Sigma 50mm 1.4. Both using fast shutter speeds 1/4000 or faster.

[Krisyavorsky]

Unlatch the adapter and twist it only half way

to the removal position. Shoot. See if the bad

effect changes angle ... IOW no longer parallel

to the frame edge. A change means the adapter

is to blame. You might hafta engage the "shoot

without lens" feature via the menu to do this.

 

If you have access to any optic for the camera

that does not need the adapter, shoot a test,

for obvious reason.

 

If the effect is not due to the adapter then it's

prolly the shutter blade lagging and shadowing

that edge. Choosing "electronic first curtain"

might ... or might not ... disappear the problem.

It depends on just how the blade is lagging [if

the blade is to blame]. Anywho, if "electronic

first curtain" disappears the error, then again

you know to blame the shutter.

 

 

`

 

 

If you have the EFCS on, and you shoot at speeds above 1/2000 sec, you will get the effect you are describing.  It's worse with legacy and non-Sony lenses. It is noted in the manual that this can happen, by the way. 

 

What was the shutter speed and what lenses were you using when you had this occur?

 

-J

 

Well you were both right. I turned off EFCS and it stopped doing it (at all shutter speeds), and then with it turned on I used a slower shutter speed and didn't get that effect. Thank you. Still so much to learn about this camera. After trying to sort it out earlier, I decided to clean all the contacts and all my lenses. While picking up my 70-200 to clean it I heard a noise which sounded like the stabilizer motor which was very weird as it was just the lens in my hand, so I flipped the lens upside down and heard it again. Shook the lens gently and could hear the internals rattling around. No clue how that happened, broken 70-200.. Hope the warranty covers that. Never dropped, always babied.