[Leica] Unusual band on some negatives from M3

[lluisripollphotography at gmail.com (Lluis Ripoll)]

Once verified that film was correctly fited in my opinion this is a quite 
usual on the old cameras curtain problem, I agree with Peter it rquires a 
good CLA
Lluis


> El 21 nov 2023, a les 17:04, Peter Dzwig <pdzwig at summaventures.com> va 
> escriure:
> 
> Aram,
> 
> Looking at it large the band is fairly well defined, but towards the edge 
> of the image there is a slightly darker blurred area, as if it had been 
> lightly brushed by something.
> 
> It could be processing, but assuming that it was done at a reasonable dev 
> shop, my guess is that the shutter is encountering a bit of grit and 
> possibly that the curtain may have been in slight contact with the film, 
> suggesting a bit slack at higher speeds.
> 
> I also wonder whether the film might have not been properly mounted. If 
> you look at the edge of the frame 34 - 34A - 35 sequence on the contacts 
> there is a visible distortion of the film suggesting that the sockets 
> weren't properly engaging. The border of the film shows marked scratching 
> on many frames. Also, and this may be how it was scanned, the left hand of 
> frame 10A doesn't look vertical to my eyes, and even that early in the 
> film there is marked scratching.
> 
> I think it probably needs a good CLA.
> 
> Just my 2p worth,
> 
> Peter - who has just got his M3 back after a very long absence
> 
> 
> 
> On 17/11/2023 18:14, Aram Langhans via LUG wrote:
>> A friend has an M3 and sent me some photo that have a light (dark on 
>> negative) vertical band towards one edge.My first thought was light leak, 
>> but it does not appear on all negatives and also does not extend into the 
>> sprocket area of the film.It is also pretty even, not diffuse.I asked if 
>> he remembered if he was using a high shutter speed for those with the 
>> bands and he though he was at about 1/500 or 1/1000 for those.I am 
>> thinking shutter problem but what I do not know.At those speeds the 
>> shutter curtains form a narrow slit and maybe it is hesitating part way 
>> across causing this band?In my 50+ years of shooting, I have never heard 
>> or seen anything like that.I told him perhaps he should run another roll 
>> through the camera at different shutter speeds and see if he can see any 
>> correlation.I told him he might exercise the shutter a bit by running it 
>> through the speeds a bunch of times and see if that cures the problem. He 
>> is a new owner of this M3 and I suspect, knowing where it came from, it 
>> might have not been used for years before he got it. I have linked a few 
>> photos showing the band.Maybe someone here can shed some light on this 
>> problem?
>> band on photo 10-11-23scan010 (leica-users.org) 
>> <http://gallery.leica-users.org/v/Aram/misc/band+on+photo+10-11-23scan010.jpg.html>
>> Line on negative drew (leica-users.org) 
>> <http://gallery.leica-users.org/v/Aram/misc/Line+on+negative+drew.jpg.html>
> 
> -- 
> 
> Dr. Peter Dzwig
> 
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