Strange low contrast in middle of negative Fuji gsw690ii

[Filmandfile]

Picked up a new to me Fuji gsw690ii, on first inspection the negs that came out of it were good but after scanning (which I’ve attempted with different light sources and different cameras) I’ve noticed a strange low contrast circle in the middle, it seems to be around the middle of the roll on both rolls I’ve shot with it so far, any ideas? I’ve edited the image to accentuate problem. Some of the images are perfect

 

[Chuck1]

Is the lens hazy?

 

[Filmandfile]

Is the lens hazy?

Can’t see any sign of haze

 

[Craig]

Flare perhaps?

Try setting the shutter to T, open the shutter and then shine a flashlight through the lens and look at it backlit. It's amazing how a lens that looks good will look hazy when the light is shone through it.

 

[Dan Daniel]

I am a bit confused. You say the flare is in the middle frames of the roll? Do you think this is related to the subject matter or light? Or related to development? Scanning? Any ideas why it is the middle frames on a roll?

Anyway, looks like lens ghosting. Light source like the sun, along with wide open skies, coming into the front of the lens but maybe not having the source directly in the frame. A wide angle lens will be more prone to this. You may have just found that combination of lighting to create this.

Or the rear of the lens is dirty/hazy.

 

[pentaxuser]

Not sure how anyone on a forum who by definition is "remote" from being able to pinpoint the cause can really help. Yes you will get a lot of "have you tried this as a check"? In total there will be many replies which may or may not pinpoint the cause but I'd take it to a camera repair shop who may, with the camera in its hands and its knowledge will be able to pinpoint the answer more accurately and if necessary effect a repair to what ever the fault is

pentaxuser