What causes dark vertical streaks on negatives?

[halina_nix]

<img src="http://s9.postimg.org/mucl9y9q7/IMG_1938.jpg" alt="" />

 

<img src="http://s24.postimg.org/l5m3u58vp/IMG_1941.jpg" alt="" />

<img src="http://s12.postimg.org/4iit6eqnh/IMG_1940.jpg" alt="" width="320" height="239" />

<img src="http://s17.postimg.org/rc0nd4rsv/IMG_1942_2.jpg" alt="" />

 

Does anyone know what could have caused this? The darker streaks get closer together the further down the roll and the closer to the spool, the darker it gets.

This happened to me twice, and then I was able to get a good roll of negatives the third time. The film I use is Arista DX 135-24 ISO 400, my camera is a Canon AE-1 Program, and I use the same developing tanks, dark bag and chemicals as my fellow students and no one else has had this problem. I'm not sure if it is fixed but even if it is I would like to know what happened.

Thanks

p.s. These photos were taken by my iPod, sorry for the low quality

<hr />

<p><em>Moderator notes:</em></p>

<p><em>I'm seeing multiple problems.  So many, in fact, that you'll need to start over from scratch.</em></p>

<ol>

<li><em>After adjusting the gamma and contrast I see no exposures at all on the negatives.  There might be some fogging, but nothing else recognizable as a deliberate photography.</em></li>

<li><em>I see what appear to be edge markings so the film was developed before fixing.</em></li>

<li><em>The fogging patterns *might* be attributable to light leaks around the film door hinge area.  Hard to tell because there are so many other problems.</em></li>

<li><em>The extreme surge marks indicate poor agitation technique.  It looks like the tank was shaken like a James Bond martini, during development, and then inadequately agitated during fixing.</em></li>

</ol>

<p><em>Try again, with a fresh roll of film.  Follow standard techniques for exposure and development, using a good reference.  Check the Ilford site for some excellent <a href="http://www.ilfordphoto.com/Webfiles/200629163442455.pdf"><strong>tutorials in PDF format</strong></a>.</em></p>

<p><em> </em></p>

<p><em>If you follow up with another roll of film and questions, please follow through by responding to replies to other forum members.  Otherwise we're all just spinning our wheels taking wild guesses.</em></p>

<p>*</p>

[larrydressler]

<p>Looks like improper fixing. Are you agitating during fixing? Is the fixer fresh? How long are you fixing? What type of fixer is it?</p>

[halina_nix]

<p>The chemicals that I use to process negatives are all Arista brand. The fix is pretty new and I fix for six minutes total, agitating for three.</p>

[larrydressler]

<p>Try refixing one of the strips to see if they clear up. this can be done in daylight.</p>

[john_shriver]

<p>Could also be bromide drag from improper agitation during development. Tell us, in DETAIL, what type of tank you are using, and how you are agitating.<br>

You also have to agitate during fixing. </p>

[Monophoto]

<p>Its really hard for me to see what is happening here because of the quality of the pictures. </p>

<p>But it looks to me like the stripes run across the width of the film strip. I've been doing darkroom work for nearly 40 years, and I've never seen a problem with processing that causes that.</p>

<p>The other thing that I think I see in the pictures is that the edges of the film (around the perforations) are as dark as the image area. This looks like the film was fogged. When I see fogged edges and stripes across the width of the film, the explanation that comes to mind is that the back of the camera was opened before the film was rewound into its canister.</p>

[mwmcbroom]

<p>I got a 35mm roll with dark vertical bands once. They were closer together than yours but just as dark. I went over to apug.org to ask about it. I was using a little Yankee tank with the agitator that has the thermometer built in that you spin? One of the members over there, when he found out I was spinning the agitator, suggested that might be the problem. Well, after that I stopped using the agitator and inverted the tank instead. Problem solved. So if, by chance, you're using a spinner in your tank, try inverting it next time.</p>