Why does an increased aperture lead to blurry photos

[Solarflare]

Our eyes see much better in low light than the camera does, so it can be hard to accurately gauge just by looking.

Depends.

With my D5100, when I use the 35mm f/1.8, its funny how bright photographs are getting.

Even stronger with the ISO 102,400 mode that only produces black and white pictures. I see hardly anything, while the camera still produces a niceish image.

And thats neither the best performing low ISO camera nor the brightest lens in existence.

 

[dmunsie]

I'd be will to bet $100 that the OP went up to f22 to increase the Aperture, not realizing that in order to increase the Aperture, you need to decrease the f-stop.
Try again OP, go to the lowest number you've got and see what shutter speed you get then..

We have a winner! (I'm assuming..) lol...

 

[Joves]

Still waiting on a photo to see. Otherwise it is all pure speculation.