Is it normal or not to have such stripes in a photo taken with strong backlight? Photographed on a new Canon 700D, jpeg from CR2.
No, it is not normal. These stripes look a lot like Newton's Rings, even though they aren't rings. Did you use some filter in front of the lens, which might have created those patterns?
Based on your comment: your image is super-underexposed. From the metadata:
- Exposure time: 1/125s
- Aperture: f/5.0
- ISO: 1600
and it looks like, from the link you gave, that you've pushed this up about three stops in post processing. (That is, to the equivalent of ISO 12,800.)
It is not at all unexpected to see artifacts like banding when taking an underexposed photo at high ISO, and even less unexpected when you push up the shadows like that.
In this particular example, the banding seems rather strong, so there may be some problem. But... I'm also reminded of the old joke: "Doctor, it hurts when I do this." / "So, don't do that!"