new to manual lenses, need advice

There's no noise, but it's soft as fuck and shows corner smearing.

>>2949682
Thanks,

I read after I got the lens that the Makinon was soft and the edges were bad. Only paid 20 for it. I recently watched a youtube tutorial about using apeture mode with zebra-ing and red peak focusing.

Think this is going to help me make sure more is in focus.

I noticed though that the f-stop on this lens clicks into place but I don't see much difference when shooting. Don't see any less light or more light from turning the f-stop.

Theres no noise in this photo. Tue colored edges are called chromatic aberrations, and are a function of that shitty lens design.

I use adapted lenses on my A7ii, and cheap ones are this bad.

Try stopping down, and it will make this picture sharper

>>2949693

Thanks. so from f2.8 to f16, which f-stop do you think this picture should have used?

>>2949698
Most lenses perform best 2-3 stops down from wide open, so for an f/2.8 lens best performance will be around f/5.6-f/8. Aside from that, it depends on what else you are going for. Are you trying to control depth of field? Are you constrained by shutter speed?

>>2949736
I just took a really good look at this lens. The f-stops click but I don't see the aperture blades moving or closing. Looks like the f stop is broken on this lens. Explains why f-stop didn't do much yesterday.