Help on grey hue on Prints

[hamustar]

I've tried taking some photos on 35mm recently, but after developing it seems that there's some slight grey hue over the photos, esp those not taken in bright sun.
Same case for colour and bw prints.

Here are the facts:
1) Used Superia 400, Kodak b&w400.
2) Developed and print in 4R in Standard Photo.
3) Used Olympus 35RC as well as Praktica MTL50. Lens are clean.

Am wondering , could it be due to light-leak, or wrong stops used?

Some pictures here scanned, but its quite hard to see the haze on the photos, hope u guys can understand what I mean.

 

[dlens]

Differernt film and different cameras but was the film processed by the same lab at the same time? Maybe it's a lab problem. Try shooting some freshly bought film and send to another lab to see if the problem persists. Some labs screw up and blame your camera, the film, etc - everything except themselves.