help) What the heck is this... ? Big problem

[kw_moon]

<p>Hi</p>

<p>Yesterday, I had a shooting for a commercial fashion brand.</p>

<p>With a medium format camera Pentax 6x7 and potra 400.</p>

<p>And this is a photo of results after film processing. </p>

<p>and i got big problem.</p>

<p> <img src="http://postfiles14.naver.net/20150830_109/kwmoon08_1440861701929tUVer_PNG/KakaoTalk_20150829_161621454.png?type=w1" alt="" width="725" height="898" /></p>

<p>HAHA... can't you see the problems ? </p>

<p>There is some lines like shadow in whole space of all my photos.</p>

<p>I don't think this is some scanning problem. because i can see that line on film. not just with the image file. </p>

<p>... can i know what happened to my films ? this is important commercial shooting for me. </p>

<p> </p>

[Ed_Ingold]

<p>Looks like shadows to me, from the light source or shallow ripples in the backdrop. Since they are very faint, you can eliminate them by adjusting the white point in Photoshop.</p>

[stephen t]

<p>If it were black and white film, I would wonder if it were bromide drag. To me it looks like a processing problem of some sort.</p>

<p>I'll be interested in reading the responses you get from others. I'm sure someone here can help you.</p>

[diegobuono]

To me it seems a processing problem. It happened to me a couple of time in the past few years but on slide film and on two distinct lab. I

never been able to discover the cause and abandoned those labs.

[jamie_robertson2]

<p>Looks very much like not enough time in the bleach process or exhausted bleach. </p>

<p>I get the same thing on my C41 negs if I don't keep them in the blix long enough. </p>

<p>I have heard that you can bleach and fix negatives again to remove this problem but I may be wrong.</p>

<p>If this is bothering you I would shoot 2 test rolls of some light coloured plain objects and send one roll to your usual lab and the other to a different place. Cream or white painted walls, overcast skies etc are the best subjects to detect this sort of thing.</p>

[donbright]

<p>Roller marks in the developer machine?</p>

[mazevedo]

<p>This could happen (doing C41 processing) if it takes to much time before the bleach/fixer is applied. Some suggest that using a stop bath right after the CD might solve the problem. This approach is not unanimous but seems to do the trick.</p>

[andrew_brown7]

<p>I know it's a bit delayed, but you could try turning the camera through 90 degrees on some shots to find whether it's processing or background lights etc.</p>