2 images rejected for TECHNICAL ISSUES

Hi Stefan,

Moderators have very little time to check a picture. And it's very effective to refuse on the first defect seen. And the reason is indeed generic, but still gives you an indication where to look.

Now your first:

You say you checked noise at 100%.  Noise and other artefacts are best seen at 200% or higher. I went to 300% and the chromatic noise popped into my eyes: 

 But also without that noise, you have these blown out reflections in the sea giving your sensor quite a hard time.

The overall image is underexposed, missing blacks, as you can see on the histogram:

All in all, are counter-light images very demanding. You did put your camera to ISO800, which is quite high. The image would have been better at a lower ISO and lower f value. But as an overall, it's not a good image also because of that big piece of street in the front and the dog walkers in full counter light.

Your second picture also has much noise in the water and the houses. Just hitting the Auto-button in Camera Raw improves the image, but also here, you have a too high ISO value, too high f value. Don't go into the extremes, especially if the lens is a weaker one. I do know nothing on the quality of your zoom lens, so this should be considered a generic remark.