FS7: Sony fs7 mystery part

JPNola

JPNola

Veteran
Anyone know what the part is in the image below? It fell out of my Sony fs7 viewfinder while I was shooting. It goes inside the viewfinder tube, it is flexible, and has residue on the back where it was affixed in the VF. It appears to be some sort of ND film, but I don't know why the VF would have a piece of ND in the path. Know what it is and why it is there?

If you look inside the VF of your Fs7 you will be able to see it by looking for the shape as seen in the image. It is on the "front" side of the magnifier element, between the lcd and the magnifier. Or on the "back" side from the eyecup.


IMG_6679.jpg
 
My guess it is a polarizing filter for the LCD screen. But it is a wild guess.

But as you know, the best way to ask a question is to throw a wrong opinion or statement on the Internet. You will be corrected in a minute with the right answer.
 
Publimix said:
My guess it is a polarizing filter for the LCD screen. But it is a wild guess.

But as you know, the best way to ask a question is to throw a wrong opinion or statement on the Internet. You will be corrected in a minute with the right answer.
Click to expand...

I tried an online search but found nothing about the part. I held the piece of film up to my eye and rotated it while looking at reflections on a car window and it didn't seem to have an pola effect to it. That is why I guessed it is ND.

I kept shooting without the piece and didn't notice much difference. I suppose if one set exposure by the screen brightness alone, the part being missing could result in exposure being off. That is, only if you did not adjust the brightness level for the part being absent.

The mystery remains unsolved. Alister, you out there? Doug? Juan??
 
I believe it to be a protection filter to help minimize direct sun damage to the LCD.

Chris Young
 
cyvideo said:
I believe it to be a protection filter to help minimize direct sun damage to the LCD.

Chris Young
Click to expand...

Thanks Chris. That entered my mind as well. Given that it sits between the magnifier element and the LCD, that makes sense.
 
JPNola said:
Thanks Chris. That entered my mind as well. Given that it sits between the magnifier element and the LCD, that makes sense.
Click to expand...

Does the part need to be replaced, or is it something that can just be put back?

Might be a good part to order for an Alphatron or Cineroid.
 
Just checked the FS7 service manual. Looks like the piece in question is a part that cannot be purchased separately. And it doesn't even come as a part of block #603. It appears to be available only with block #601 which is the entire VF assembly.

Re the Alphatron they came out with an upgraded piece of optics for the eye piece to help prevent sun burn on the screen. I was lucky enough to get one of these for mine. Learnt the hard way. Was doing an outdoor PTC and left the camera for about ten seconds to adjust the talent's wireless mic walked back to the cam and hallelujah I had a lovely pink sun scorch on the screen. The Alphatron used iPhone 4 Retina screens so they were readily available and quite cheap. Bought two so subsequently have an Alphatron and spare screen sitting around. Still use it on rig with the A7III sometimes as it gives me HD SDI out which is sometimes useful.

Chris Young

FS7 VF.jpg
 
Wes. said:
Mine fell out too! con-flabbid-viewfinder son of a.....
Click to expand...

That EVF seems to be just about the weakest link in the Fs7.. the first one was mounted on a rod..great for keeping the horizon !! not.. someone at Sony got Zacuto shares for sure..
 
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