About Zoom
Well, now I have 3 zoom lenses that I use that cover a large range I decided to examine what each lens could do in a little more detail.
Using each lens, I took a series of photos of the same subject. I set each lens to the focal length that is marked on them and aimed at the same spot and tokk the images.
The photos are "nothing special" as far as the subject is concerned -as the purpose of this study was to get a bit of an insight as to exactly what sort of "Field of View" that each Lens encompasses.
For the purpose of the tests, I simply set the Camera to 100 ISO, selected the Largest Aperture, lined up and took the shot. I shot raw, and all I did was to resize the images as far as processing was concerned as I just wanted to have a simple comparision.
I just went outside the front of my house and aimed up the street - always at exactly the same spot.
Even though I have the original standard kit lenses for my Camera, I chose not to use them for the purpose of this comparision. The kit lenses cover slightly less range than the pro range I am using and are slower.
The first lens I choose was my newly aquired 11-22mm. I took a series of 4 photos - 11mm, 14mm, 18mm and 22mm.
You can see from the above 4 photos that the 2x zoom range of 11 to 22 is quite large. The lens is considered to be a wide zoom.
Next onto the 14-54mm lens. I took 5 shots this time - 14mm, 19mm, 25mm, 35mm and 54mm. As I was only looking at the lens markings, I missed the 18mm marking by a little bit and got a 19mm shot instead
The 14-54mm Zoom is my main workhorse lens - with a 3.85 zoom range. It goes from wide to short telephoto.
Now onto my longer zoom the 50-200mm. I took another 5 photos - 50mm, 69mm, 101mm, 147mm and 200mm. As I was going by the markings on the lens, some of them were off a little - the markings were 70mm, 100mm and 150mm (with the 50 and 200 at each end of course).
The 50-200 is a 4x mid to long Zoom lens.
From the series of photos, across the range of the Lenses I currently use, you can see that I can shoot an all-encompassing Landscape at the wide end, and zoom right in and grab an image with a lot of detail. As you can now guess, I was lining up the base of the post of my neighbours letterbox.
11mm to 200mm across 4 lenses (or if you think in terms of 35mm SLR this roughly translates to 22-400mm) is a massive 18x zoom range. By breaking this across the 3 lenses, I get the highest possible quality over the whole range.
There was absolutely nothing scientific about my shots - just a simple, real-world comparision of 1 aspect - the Field of View that each lens offers.
Over the coming weeks, I am going to explore the capabilities of each of these lenses in far greater detail and look into far more than the comparative FOV across the range.
