Critique of the Canon Wide Angle Lens - The EF-S ten-22mm F 3.5-4.five USM I have just received my new Canon EF-S 10-22 ultra-extensive angle lens. This is 1 of Canon's most common lens and is designed for the "crop sensor" series of DSLR. More on what
randy jackson recent a crop sensor is later. My very first considered soon after a few of frames is "Wow, this is genuinely extensive, it wraps around my block."
The question of the day is why do I need a 10-22mm broad angle lens. I by now have a EF-S eighteen-55 zoom that arrived with Canon X1i camera. So what am I heading to do with that further 8mm of width for a wide angle shot. That 8mm is like a football area when I am shooting a landscape in the distance (effectively maybe not very a soccer field, but near).
There is a excellent need for people of us that shoot landscapes for a wide angle lens. As you may well recognize in my landscapes I have a tendency to shoot quite 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 indicates that I am shooting at 28.8mm in film 35mm dimensions. This is because the T1i is a crop sensor digital camera with a element 1.6x.
Now I have to describe the crop sensor things. Suffice to say that there are three ratios of crop sensors in the Canon line of cameras complete sensor, 1.3x, and one.6x. This refers to the ratio of the sensor (the computer chip that sees the picture and translates it to electronic). The total sensor is the same dimension as the 35mm digicam of decades prior. The two other ratios are, in impact, a subset of the full sensor and the 35mm film size. For sensible reasons this means that the full sensor would see the complete football field, the 1.3x sensor would see inside the 20 yard lines and the one.6 element would seize inside the 30 lawn lines. Now, you math majors out there do not hold me to the exact proportions, I am just attempting to illustrate the notion.
Here is a list showing what Canon cameras have which sensor:
Canon EOS 1Ds, Mark II and II (Full Body)
Canon EOS 5D and 5D, Mark II (Total Body)
Canon EOS 1D, Mark III,IV (1.3x Crop Body)
Canon Digital Rebel, T1i,XSi,XS (one.6x Crop Frame)
Canon EOS 20D,30D,40D,50D,7D (1.6x Crop Frame)
Now what does all this have to do with me wanting, needing, lusting after a 10-22mm broad angle? Now you know that this lens will match on my digital camera (whew, that took a extended time). You will also know that the 10mm, the widest of the vast angle, is genuinely a 16mm on my digicam compared to how it appears on a total body digicam. That is nonetheless very excellent and will seize actually ranging views of people red rocks that I am so fond of.
What about the other characteristics of the lens? All the reviews I have go through present it to be a really higher high quality "glass." Canon designates their best-of-the-line lenses with the letter "L" in the description. Even though the EF-S 10-22 f/3.five-4.5 does not carry the "L" designation, the use of 3 aspheric components and one particular SD component is a frequent characteristic of a quality lens. My very first very first shots with the lens still left me with the impression of how obvious and sharp it is.
This has high quality optical elements and is not a "lower-stop, client kind lens". Some pundits have suggested 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 professional level DSLR (EOS 5D,1Ds series), Canon did not give it a "professional" L designation. In simple fact, no EF-S lenses have the "L" designation to day.
EF-S lenses, of class, are created for use only with APS-Do (one.6x) sensor Canon DSLRs and will currently only bodily mount on the Digital Rebel series, and EOS 20D,30D,40D,50D 7D. The EF-S design permits the rear component to be nearer to the sensor then with EF lenses, improving image high quality, particularly at the shortest focal lengths. The "S" in EF-S indicates "limited back focus" and now you know why.
There are several technical good reasons that this lens is great for wide shots and landscapes. The critiques have revealed that it is quite sharp and quite rapidly when car focusing. On the damaging side I will be aware that, if you use this lens when searching at a particular person up shut it will make them seem like they are standing in the circus exhibit with the distorted mirrors. It is plainly designed for these shots that are as wide as all outside.