Going ultra-wide
Because
the sensor in a digital SLR camera is typically
smaller than the 35 mm film that it replaced, the
physics of the focal point of the lens are changed.
This is known as "The Field of View Crop Factor" or
sometimes "The Focal Length Multiplier". The net
result means your long lens becomes longer and your
wide lens becomes narrower.
Wildlife photographers sing the praises of The Focal
Length Multiplier because their 200 mm telephoto lens
effectively becomes a 320 mm lens. Creative
photographers hate it because now a 24 mm lens
becomes a 38 mm lens and you can never get wide
enough.
My personal lens investment is from the pre-digital
era, so I never had the chance to compensate for this
effect. All of my lens became too long for many of my
purposes. I satisfy my need for wide by occasionally
renting a 14 mm ultra-wide lens (effective focal
length of 22 mm), which reminds me of the good old
days, when a wide lens was truly a wide lens.
Wide is a lot of fun and it also allows me to keep
the header imagery fresh.