Menu > Shooting Menu > ISO Sensitivity Settings > ISO Sensitivity Control > On or Off. If you set Off the ISO will be controlled by pressing the ISO button on the left and turning the Main Command Dial. If you select ON (Auto ISO) you can set Maximum Sensitivity and Minimum Shutter Speed.
Do you have advice to start me out on trying to get some depth in this image? Thanks!
I'll jump in here, if I may. Without knowing what software you used to convert to B/W I will suggest a simple starting point. In either PS or Lr use the Convert to Black and White, not Convert to Grey Scale, the use the Colour Mix sliders to lighten or darken certain hues. Experimentation works wonders but be subtle. Also, in LR the Clarity slider is great but use sparingly. Adjusting the clarity will bring out cloud detail in flat grey skies. Your next best friend is probably dodging and burning to introduce localised contrast.
The answers to both your questions are going to be very subjective. But to Bob's point, I also feel there is much that can be done both with tonal contrast and selective dodge/burn in your composition to help separate elements and direct our eye through the frame.
I personally like tint and toning to many monochrome images, but more in the selenium or blue areas (there's another I can't recall this second) rather than sepia, pink or yellow. And I personally like a less busy composition than you've provided. The main drawback for me here is the amount of "stuff" that's all pretty much the same physical size and tone.
A soft graphite pencil rubbed around the treads will stop them from sticking. You can grind a pencil lead and apply it to the threads with a fine artists brush.
First an apology for not responding to you all in a more timely manner. I won't reply individually to your comments so I will give you all a big group thank you
Things are back to normal for me now. So I will be able to post a few more pictures.