chapelcross

I've now had a chance to check the original negative and scanner, and to rescan it.

The negative itself is too dense to see the rather subtle variations by eye, so I was wrong about confirming that it was on the negative, at least for this particular frame.

As Evan suggested, the sample frame I provided WAS the end of a film strip; I haven't yet checked whether all the other cases of streaks were, too.

After sitting under weights for a few months, the negatives are flatter. A rescan yielded an image free of the original streaks, even after using Photoshop to alter grayscale significantly.

Incidentally, I use a Canoscan 4400F, which has an unimpressively delicate plastic film holder.

So - thanks, Evan; your diagnosis fits.

As displayed in the Visitors' Centre.

Pentax Spotmatic Ilford Pan F in Ilfosol 3<div></div>

Pentax K1000 105mm Super Takumar lens

Fuji Sensia film.

Full-frame, unretouched.

Jan 2008<div></div>

Pentax K1000 105mm Super Takumar lens.

Konica Centuria 100 film scanned on Canoscan 4400F<div></div>

Pentax Spotmatic 24mm Super Takumar, Ilford HP5 film in Ilfosol-S

24 Feb 2008 southern Scotland<div></div>

Pentax K1000 105mm Super Takumar with polariser. Ilford FP4+ in

Ilfosol 3<div></div>

Pentax Spotmatic Super Takumar 105mm f/2.8, Ilford Delta 400 in

Ilfotec DD-X.<div></div>

Pentax K1000 50 mm Super Takumar lens

Ilford FP4+ in Ilfosol-S for 6min30sec

Mar 2008<div></div>

Hi folks, here's a photo of Feynman I took as a student, using a Pentax SV:

Thanks for the answer/question, which hadn't occurred to me. But yes, the streaks are on certain individual frames

of strips of negatives, both black and white (Ilford FP4, Delta 400, Pan F...) and colour (Fuji Sensia, Fuji Provia).

I've begun reusing my old (1983) Pentax K1000 recently, and find occasionally that I get streaks along one edge of

the exposed from as in this scanned example:

http://www.flickr.com/photos/chapelcross3/2744095416/

I hadn't noticed them before, and can't decide whether the streaks are a form of lens flare or reflection, or light leak.

With colour film, the streaks themselves are coloured and vaguely spectral.

The lenses I use are Super Takumar 50mm/f1.4, 105mm/f2.8, 24mm/f3.5

Does anyone have ideas?<div></div>