Some things I didn't know

Thanks to my photo mentor (who will have his very own link on my blog as soon as I figure out how to do that...) I have new information. My 50 mm lens has little numbers around the ring in the front - specifically '1:1.8'

That number impacts my dof but it actually represents the largest possible aperture opening!

Another fun mistake follows:

I took this picture because the lighting was fun and I needed to take a picture of something!




The image looked "noisy" to me so I wanted to check the ISO - maybe it had been too high?

On my computer I just click on the image and then press the apple key + i and magically...all my image information appears.

However...

I was looking at this image in photoshop and so when I pressed my trusty information combo, this happened:

My history pallet said that I had "inverted" it. I still don't know what that means but I thought it was fun. Maybe I'll shoot a few things planing to "invert" them and see what happens.

They say failure is the best teacher...