(newbie) Why do these negatives look odd?

[amangupta]

Hi,

I am a new LF photographer and I recently took my first two exposures with a 4x5 format camera. I had a lab process the negatives, and both the scans show something going wrong (fogging, horizontal lines). I wanted help to identify what could be going wrong.

The film is T-max 400. I asked them for the standard processing of both negatives.
The pictures have a one stop difference in exposure.
The scans are how they came from the lab. The issues in the image are not due to scanning - the negatives show them too.

Here is the link to the photos:
https://lightroom.adobe.com/shares/b0f4e8893ce445ca9d10029327a6db4d

Is there something I am doing wrong while handling the negatives?

Thanks in advance!
Aman

[ic-racer]

Based on that link it looks like you should be using darkroom rather than lightroom.

[djdister]

You have light fogging of the film, possibly from a light leak at the back of the camera, or a leak in the bellows, or in your handling of the film anywhere from the original box to the film processing.

[Doremus Scudder]

This a a light leak, likely caused by you inadvertently pulling the spring back away from the camera when pulling or inserting the darkslide. It is a rather common problem. Learn to pinch the spring back to the camera body with the fingers and thumb of your free hand when pulling or inserting the darkslide.

Best,

Doremus

[Steven Ruttenberg]

Light leak. I had lots of t hose when I started.