I have just obtained my new Canon EF-S 10-22 ultra-broad angle lens. This is one particular of Canon's most common lens and is designed for the "crop sensor" sequence of DSLR. Much more on  what a randy jackson recent  crop sensor is later on. My first considered following a few of frames is "Wow, this is really extensive, it wraps close to my block."

The issue of the day is why do I want a 10-22mm broad angle lens. I currently have a EF-S 18-55 zoom that arrived with Canon X1i camera. So what am I going to do with that further 8mm of width for a wide angle shot. That 8mm is like a soccer area when I am shooting a landscape in the distance (nicely perhaps not fairly a soccer field, but shut).

There is a excellent need for these of us that shoot landscapes for a extensive angle lens. As you might discover in my landscapes I are inclined to shoot really wide shots with mountains or red rocks in the foreground and the horizon in the distance. I have been shooting most of my landscapes at 18mm with my kit lens on the T1i. That implies that I am shooting at 28.8mm in movie 35mm dimension. This is since the T1i is a crop sensor digicam with a issue one.6x.

Now I have to clarify the crop sensor things. Suffice to say that there are three ratios of crop sensors in the Canon line of cameras total sensor, 1.3x, and 1.6x. This refers to the ratio of the sensor (the pc chip that sees the picture and translates it to digital). The entire sensor is the exact same dimensions as the 35mm digicam of a long time earlier. The two other ratios are, in effect, a subset of the total sensor and the 35mm movie dimensions. For functional functions this means that the entire sensor would see the total football discipline, the one.3x sensor would see inside the twenty property lines and the 1.6 issue would seize inside the 30 lawn lines. Now, you math majors out there do not maintain me to the precise proportions, I am just attempting to illustrate the notion.

Here is a checklist displaying what Canon cameras have which sensor:

Canon EOS 1Ds, Mark II and II (Entire Frame)
Canon EOS 5D and 5D, Mark II (Entire Body)
Canon EOS 1D, Mark III,IV (one.3x Crop Frame)
Canon Electronic Rebel, T1i,XSi,XS (one.6x Crop Frame)
Canon EOS 20D,30D,40D,50D,7D (one.6x Crop Body)


Now what does all this have to do with me seeking, needing, lusting following a 10-22mm broad angle? Now you know that this lens will match on my digicam (whew, that took a long time). You will also know that the 10mm, the widest of the extensive angle, is really a 16mm on my digicam compared to how it seems on a total body digital camera. That is nonetheless really excellent and will capture genuinely ranging views of individuals red rocks that I am so fond of.

What about the other characteristics of the lens? All the reviews I have read present it to be a really large quality "glass." Canon designates their top-of-the-line lenses with the letter "L" in the description. Though the EF-S 10-22 f/three.5-four.five does not carry the "L" designation, the use of three aspheric components and one SD aspect is a frequent attribute of a top quality lens. My 1st very first shots with the lens still left me with the impression of how clear and sharp it is.

This has top quality optical components and is not a "very low-stop, buyer sort lens". Some pundits have suggested that if it had not been an EF-S sort lens, it may have acquired the "L" designation, but considering that it will not match on a pro amount DSLR (EOS 5D,1Ds collection), Canon did not give it a "professional" L designation. In simple fact, no EF-S lenses have the "L" designation to date.

EF-S lenses, of training course, are intended for use only with APS-Do (1.6x) sensor Canon DSLRs and will at the moment only physically mount on the Electronic Rebel collection, and EOS 20D,30D,40D,50D 7D. The EF-S style makes it possible for the rear component to be nearer to the sensor then with EF lenses, improving picture good quality, specifically at the shortest focal lengths. The "S" in EF-S means "limited back again focus" and now you know why.

There are a lot of technical factors that this lens is great for broad pictures and landscapes. The critiques have revealed that it is extremely sharp and extremely quickly when car concentrating. On the negative aspect I will notice that, if you use this lens when looking at a particular person up near it will make them appear like they are standing in the circus exhibit with the distorted mirrors. It is evidently designed for those shots that are as wide as all outside.