Focal Length - Part 2.2

Begin at your longest focal length on a subject. as you move through to the widest focal length, move closer to the subject to keep it the same.

Compare the backgrounds in each image. The subject should be the same size in each frame but the background will change based on the angle view of the lens in use.

80 mm

50 mm

35 mm

28 mm

I, again, focused on the cactus in this shot and kept it aligned with the right thirds line. It was a lot of fun walking through the desert!

I find it fascinating, like the mountains with the last lens, the house in this one appears closer to the cactus at the longest focal length, and then the distance grows when going down to the widest focal length. You can tell the distance I am from the cactus because of the post that marks our property line... I wish the clouds were a little less prevalent at this time (although it was wonderful outside), I wanted to see the mountains change with the closer I moved to the cactus.

In my head I picture the angle of view with the vertex at the lens. This is what I see when thinking about the mm numbers... I thought I would share this as it feels like a photography epiphany for me. :)

I am liking the cannon lens less and less, I need a tripod (one that is taller than the table one)... :)

now... on to chapter two. :)

Focal Length - Part 1.2

Compare the focal lengths from a specific distance to see the coverage the lens gives you.

These are the images from the Cannon 20-80mm lens.

I, again, did not pull out the tripod but perhaps should have. I actually rested the camera on the hood of the truck (which means I had a hard time seeing to focus). I started out focusing on the tree and ended up focusing on the cactus behind it...

ISO 250
1/2000 sec
28mm

ISO 250
1/1250
35mm

ISO 250
1/640 sec
50mm

ISO 250
1/320 sec
80mm

It's amazing the difference between the widest angle and longest focal length with this lens. It made it very difficult to focus on the tree in the 80mm I cannot tell what the aperture was, as it does not read it through the camera. But the exposure value seemed to increase each time I lengthen the focal length because the shutter speed slowed down.  I find this interesting and wonder why it did this. Perhaps I may learn this later, I might even forget.

I think I prefer the widest angle on this lens, it is easier to shoot and easier to focus. The whole image does not seem to shift like it does with my other lens, it seems fairly centered.

This was fun and I am excited to get outside and try the second part to the first chapter.