Ok now....

[Marko]

Ok - based on the info given shutter speed does not look like the issue here. On a tripod, these should all be sharp. they are not. They are being triggered by the timer so shake at these speeds is not your doing.

How is your eyesight in general? - I ask this because we are talking about 2 different lenses now. The chance of both lenses being off are very very small.

What may be happening is that you cannot see if indeed the shot is in sharp sharp focus in your viewfinder. This can happen when you use slower lenses and/or when the scene is dim like in the first 2 shots. Now that I know shutter speed is not the cause...I'd bet that this is the problem. take a look at shot 2 of the truck. You say you focused on the orange dude's eye...and yet the green eye on the other figure is sharper. To me this suggests you simply missed the focus....likely because fine focus in dimmer light is hard.

New test

Take the boy or the truck outside where it should be much easier to see if the eye is in sharp focus. Same test as above. On a tripod with a timer (or cable release). CONFIRM with us that indeed you focused on the eyeball and that the eyeball looked sharp in the viewfinder. For the boy, make sure the shutterspeed is at least 1/125. For the truck it does not matter.

Try one shot autofocusing and one shot manual...... I'd bet the results you will show us now will be considerably sharper.

PLEASE ALSO CONFIRM THAT EACH OF THESE SHOTS WAS LESS THAN 250K BEFORE YOU UPLOADED THEM.

Hope that helps - Marko