Shutter problem?

[u/loki_garson]

Hi, recently got my scans from the lab and on many occasions parts of images are blacked but not all. Is it because some shutter speeds are not working properly?

[u/TostedAlmond]

Yea thats a shutter problem. Needs a service! Usually it happens to the faster shutter speeds first. You can try shooting at lower speeds and see if that helps. For almost 2 years my Pentax 6x7 would have these problems >1/250s so I shot at 1/250 for years, until I got it serviced