When you get lots of similar jets arriving, you can mess around a bit. The 500mm was far too long for the touchdown shots for most aircraft but, when you are getting a bunch of Air Canada A320s, no harm in cropping in really tight on some of them. The CFM-56 reversers are a bucket type so they splay out from the nacelle. With the evening light, you can see lots of detail in the structure. I played with a similar effect on some of the other jets too.