I have just received my new Canon EF-S 10-22 ultra-extensive angle lens. This is a single of Canon's most common lens and is designed for the "crop sensor" series of DSLR. A lot more on what a randy jackson recent crop sensor is later on. My first thought soon after a few of frames is "Wow, this is truly broad, it wraps around my block."

The issue of the day is why do I want a ten-22mm extensive angle lens. I by now have a EF-S eighteen-fifty five zoom that arrived with Canon X1i camera. So what am I heading to do with that added 8mm of width for a vast angle shot. That 8mm is like a soccer subject when I am shooting a landscape in the distance (properly maybe not very a football field, but shut).

There is a excellent need for individuals of us that shoot landscapes for a extensive angle lens. As you may possibly notice in my landscapes I are likely to shoot quite extensive pictures 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 means that I am shooting at 28.8mm in film 35mm dimension. This is because the T1i is a crop sensor digital camera with a factor 1.6x.

Now I have to make clear the crop sensor stuff. Suffice to say that there are a few ratios of crop sensors in the Canon line of cameras entire sensor, one.3x, and 1.6x. This refers to the ratio of the sensor (the laptop or computer chip that sees the image and translates it to digital). The complete sensor is the exact same dimension as the 35mm digital camera of decades earlier. The two other ratios are, in impact, a subset of the complete sensor and the 35mm movie measurement. For useful purposes this indicates that the full sensor would see the entire soccer discipline, the one.3x sensor would see inside the 20 yard lines and the 1.6 aspect would seize inside of the 30 garden lines. Now, you math majors out there do not maintain me to the specific proportions, I am just trying to illustrate the concept.

Right here is a checklist demonstrating what Canon cameras have which sensor:

Canon EOS 1Ds, Mark II and II (Total Frame)
Canon EOS 5D and 5D, Mark II (Full Body)
Canon EOS 1D, Mark III,IV (1.3x Crop Frame)
Canon Electronic Rebel, T1i,XSi,XS (1.6x Crop Frame)
Canon EOS 20D,30D,40D,50D,7D (1.6x Crop Frame)

Now what does all this have to do with me seeking, needing, lusting right after a 10-22mm extensive angle? Now you know that this lens will match on my camera (whew, that took a extended time). You will also know that the 10mm, the widest of the wide angle, is genuinely a 16mm on my digicam in contrast to how it looks on a full body camera. That is nonetheless really good and will seize actually ranging views of people red rocks that I am so fond of.

What about the other attributes of the lens? All the testimonials I have read present it to be a really large quality "glass." Canon designates their prime-of-the-line lenses with the letter "L" in the description. Even though the EF-S ten-22 f/3.five-four.five does not carry the "L" designation, the use of 3 aspheric elements and 1 SD component is a typical characteristic of a quality lens. My first first pictures with the lens still left me with the impression of how very clear and sharp it is.

This has high quality optical components and is not a "reduced-finish, client type lens". Some pundits have proposed that if it had not been an EF-S sort lens, it might have received the "L" designation, but given that it will not fit on a pro stage DSLR (EOS 5D,1Ds collection), Canon did not give it a "professional" L designation. In fact, no EF-S lenses have the "L" designation to date.

EF-S lenses, of course, are intended for use only with APS-C (one.6x) sensor Canon DSLRs and will at the moment only physically mount on the Digital Rebel sequence, and EOS 20D,30D,40D,50D 7D. The EF-S design allows the rear factor to be closer to the sensor then with EF lenses, enhancing image top quality, specifically at the shortest focal lengths. The "S" in EF-S means "brief again focus" and now you know why.

There are a lot of technical causes that this lens is very good for wide pictures and landscapes. The testimonials have demonstrated that it is quite sharp and extremely fast when vehicle concentrating. On the unfavorable facet I will notice that, if you use this lens when looking at a man or woman up near it will make them search like they are standing in the circus exhibit with the distorted mirrors. It is plainly developed for individuals shots that are as broad as all outdoors.