Posts Tagged ‘Lens Optics’
Canon EF S 10 22mm f 3 5 4 5 USM SLR Lens for EOS Digital SLRs

This exciting new zoom lens provides ultra wide-angle coverage to the EOS 20D and Digital Rebel SLR Digital-camera systems. Equivalent to a 16-35mm zoom, it offers excellent performance and optics designed from the ground-up for digital SLR use. Three Aspherical lens elements, plus a Super-UD element, assure image quality. Its ring-type USM means fast and silent AF along with full-time manual focus. It focuses as close as 9.5 inches. Circular aperture design — natural highlights, even stopped down two stops Electronic diaphragm — manually-set apertures stay constant from f/4.5 thru f/22 EF-S lens mount — exclusively for EOS 20D and Digital Rebel bodies Focal length 10 – 22 mm / 35 mm FOV 16 – 35 mm equivalent Construction – 13 elements in 10 groups Diaphragm – 6 blades Maximum aperture F3.5 – F4.5 / Minmum aperture F22 – F27 Closest focus 0.24 m Max magnification 0.17x (at 22 mm) AF actuator USM with full-time manual focus Filter diameter – 77 mm (accepts 77mm optional filters) Unit Dimensions – 83.5 x 89.8 mm (diameter x length) / Weight – 385 g
User Ratings and Reviews
5 Stars Love this lens! Surprised!
I bought this as a birthday gift for my husband, because he had requested it. I have never been much interested in wide-angle lenses–to me, long telephotos were the ones I lusted for. This lens has changed my mind. It opens up new worlds of photos that I had never thought about!
The quality seems great, as usual with Canon lenses. It’s small and relatively lightweight. The pictures look good to me–I don’t have the chops to evaluate them in a technical way, but the color rendition and sharpness look good.
5 Stars Can’t beat the pictures this lens takes
bottom line, this lens takes amazing pictures you just can’t get with any other lens for this camera. Worth every penny.
5 Stars Excellent “L Lens” Optics – Very fun, enjoyable, high quality lens
First of all, this lens is an absolute blast to use. If you’ve never shot a full frame camera with a wide-angle lens, you’re in for a treat. Sitting on a chair I can easily see my knees as I look straight ahead with the lens – its just silly.
The optics are spectacular. I was skeptical too, but taking some test photos, they are very, very sharp – comparable or better than my 24-105L and 100-400L (still can’t beat the 70-200, sorry).
The build quality is good… but not great. Take this comment with a grain of salt. Besides my 60mm macro, i’ve only owned and used “L” lenses over the last year – so my expectations as far as build quality go, are high.
There is definitely distortion (i forget if its pincushion or barrel), most noticably at the widest focal lengths when the focus is near (less than 30 feet away). Its definitely not severe distortion, or even distracting. If you look for it, you will find it though. That being said, this isn’t really a problem when you are taking pictures of landscapes, buildings etc. In fact, this lens does a better job of keeping buildings/rooms looking natural in terms of perspective (think about how your pictures have leaning buildings in them usually – this lens is good at fixing that).
For the price (its not terrible but not cheap), I would have liked to see a metal body (of course it won’t be without “L” designation) and a lens hood (something they don’t include outside of “L” lenses). But for the price, its definitely still of good value as it is just that sharp and that much fun to use.
Bottom line…. if you only use a crop camera (not full frame) you will absolutely love this lens if you ever wish you could get more in the frame than your current lens. The image quality is worth it alone… but seriously, its a REALLY fun lens!
5 Stars Blown away…
I read a lot of reviews about this lens before making a purchase of my own. The 2 things I liked the most about what I read were the claims that Canon appeared to be using “L” glass, or near-”L” glass in this lens, and of course the main feature of having an ultra-wide angle capability with a 1.6 APS-C camera like my EOS 50D. I can say now after some field testing that this lens gets a 5-out-of-5 stars on both of these accounts.
Crisp focus and tack sharp images seem to be trivial to achieve with this quiet USM AF lens. I found the best 50D lens micro adjustment on my camera to be +3, but also found +0 to be quite acceptable, using the LCD monitor/moire pattern tuning technique at both ends of the zoom range. What REALLY tooted my horn however was the new found capability to take shots that were simply not achieveable before with my 28mm lens. Whole rooms in the house became one-shot deals, as opposed to the cumbersome image stitching technique. Groups of people near by – no problem getting them all into 1 shot. Landscape challenges – a snap without having to back up and up some more, and still wind up stitching multiple images together. Of course, everything written about straight-line distortion at the 10mm end of the zoom is true, but not to an excess, and in my opinion is MORE than offset by the capability to simply “get the shot all at once”. An indoor 6 story atrium that previously took 6 stitched photo’s to capture – now easily captured in 1 shot.
Focus was achieveable at a tiny bit over 4″ from the front of the lens. No IS on this lens, which I missed while trying some low-light shots (I kept waiting for IS to kick in out of habit, since all my other lenses are blessed with this feature), but this is only a concern on extreme close-up’s, which is not generally what you’d use this lens for anyway.
The lens has an AF/MF switch of course, and is only usable on certain camera’s that are compatible with EF-S type lenses (there is tons of online info about that to be read elsewhere). The filter size is 77mm. There is a light hood available from Canon, which I don’t own yet, and I’ve read that it’s marginally beneficial for blocking light since it’s so small in order to accomodate wide angle zooming without getting in the way. I’ll still buy one and put it on for extra front-end lens protection at around $14. It’s easy to bump in to things and a lens hood makes a lot of sense for that reason alone. Anyone who’s ever bent the metal of a filter after lightly bumping in to something, and then struggled with filter removal, lens cap fitting, etc., will know just what I mean.
I took some test shots with the built-in flash, and the 10-22mm lens does block the lower 5-10% portion of the picture at wider angle zooms. I was able to compensate for this in most shots by pointing the camera downward a bit more. Still, I’d recommend an external flash when using this lens, to take care of this interference and of course to get far superior bounce flash shots. There was no issue with the lens blocking any output from a camera mounted EX flash.
No lens creep on this lens. The overall lens length does not change with zooming. The zoom ring is snug, but turns smoothly, as does the focus ring, which can be turned after AF’ing for any fine tuning of the focus. The subject end of the lens does NOT TURN when zooming, which is great for circular polarizers and other filters that need to stay oriented. The lens length is 4″ (with a UV filter attached) from the front of the lens to the camera body face.
At first I thought this lens might be a specialty lens that I would only use when I needed whole room shots or was met with other wide angle challenges, but with an effective 35mm range on an APS-C camera, the quality of this glass makes it a candidate for a lot more uses as well, enabling quick access with a twist of the zoom ring to any action that comes in “close”, or to capture 2 subjects that are not conveniently side-by-side, as is sometimes the case with candid photo’s.
I have to admit that I’m writing this review after taking less than 300 photo’s with this lens, but the image quality and jaw dropping access to amazingly wide “views” that I’ve never had the ability to capture in one shot with a dSLR compelled me to brag “now” about this lens. If I encounter anything noteworthy after taking some more test shots under various conditions, I’ll amend this post.
In all honesty, it’s hard to imagine anyone who has ever been challenged by a wide angle shot not immediately falling in love with this gem once they get in to the field with it. Five star thumbs up on this one. Canon EF-S 10-22mm f/3.5-4.5 USM SLR Lens for EOS Digital SLRs
4 Stars Amazing lens for 1.6 crop sensor
It’s been reviewed to death here and elsewhere so not much to add from me. Amazingly wide, very good contrast and color, nice details also. The only thing to pick on is the plastic look and feel but it is also the plastic that makes this lens so light and portable.
I know this has nothing to do with the product, but I want to add my comments about Amazon. The packaging seems to be getting worse these days, may be they are going green and using less plastic air/bubble to pack but it does not make you feel good when a 700 dollars lens come bouncing in a box with no impact cushion. Having said that, I would have to say Amazon provides the best customer service/support among other merchants that I buy from, I can always buy from Amazon with confidence because I know they would do anything within reason to make my purchase satisfactory. I buy my gear from a few other online merchants too due to availability but their exchange/return policy is nowhere near what Amazon would do for you.
Canon EF S 10 22mm f 3 5 4 5 USM SLR Lens for EOS Digital SLRs

This exciting new zoom lens provides ultra wide-angle coverage to the EOS 20D and Digital Rebel SLR Digital-camera systems. Equivalent to a 16-35mm zoom, it offers excellent performance and optics designed from the ground-up for digital SLR use. Three Aspherical lens elements, plus a Super-UD element, assure image quality. Its ring-type USM means fast and silent AF along with full-time manual focus. It focuses as close as 9.5 inches. Circular aperture design — natural highlights, even stopped down two stops Electronic diaphragm — manually-set apertures stay constant from f/4.5 thru f/22 EF-S lens mount — exclusively for EOS 20D and Digital Rebel bodies Focal length 10 – 22 mm / 35 mm FOV 16 – 35 mm equivalent Construction – 13 elements in 10 groups Diaphragm – 6 blades Maximum aperture F3.5 – F4.5 / Minmum aperture F22 – F27 Closest focus 0.24 m Max magnification 0.17x (at 22 mm) AF actuator USM with full-time manual focus Filter diameter – 77 mm (accepts 77mm optional filters) Unit Dimensions – 83.5 x 89.8 mm (diameter x length) / Weight – 385 g
User Ratings and Reviews
5 Stars Excellent “L Lens” Optics – Very fun, enjoyable, high quality lens
First of all, this lens is an absolute blast to use. If you’ve never shot a full frame camera with a wide-angle lens, you’re in for a treat. Sitting on a chair I can easily see my knees as I look straight ahead with the lens – its just silly.
The optics are spectacular. I was skeptical too, but taking some test photos, they are very, very sharp – comparable or better than my 24-105L and 100-400L (still can’t beat the 70-200, sorry).
The build quality is good… but not great. Take this comment with a grain of salt. Besides my 60mm macro, i’ve only owned and used “L” lenses over the last year – so my expectations as far as build quality go, are high.
There is definitely distortion (i forget if its pincushion or barrel), most noticably at the widest focal lengths when the focus is near (less than 30 feet away). Its definitely not severe distortion, or even distracting. If you look for it, you will find it though. That being said, this isn’t really a problem when you are taking pictures of landscapes, buildings etc. In fact, this lens does a better job of keeping buildings/rooms looking natural in terms of perspective (think about how your pictures have leaning buildings in them usually – this lens is good at fixing that).
For the price (its not terrible but not cheap), I would have liked to see a metal body (of course it won’t be without “L” designation) and a lens hood (something they don’t include outside of “L” lenses). But for the price, its definitely still of good value as it is just that sharp and that much fun to use.
Bottom line…. if you only use a crop camera (not full frame) you will absolutely love this lens if you ever wish you could get more in the frame than your current lens. The image quality is worth it alone… but seriously, its a REALLY fun lens!
5 Stars Blown away…
I read a lot of reviews about this lens before making a purchase of my own. The 2 things I liked the most about what I read were the claims that Canon appeared to be using “L” glass, or near-”L” glass in this lens, and of course the main feature of having an ultra-wide angle capability with a 1.6 APS-C camera like my EOS 50D. I can say now after some field testing that this lens gets a 5-out-of-5 stars on both of these accounts.
Crisp focus and tack sharp images seem to be trivial to achieve with this quiet USM AF lens. I found the best 50D lens micro adjustment on my camera to be +3, but also found +0 to be quite acceptable, using the LCD monitor/moire pattern tuning technique at both ends of the zoom range. What REALLY tooted my horn however was the new found capability to take shots that were simply not achieveable before with my 28mm lens. Whole rooms in the house became one-shot deals, as opposed to the cumbersome image stitching technique. Groups of people near by – no problem getting them all into 1 shot. Landscape challenges – a snap without having to back up and up some more, and still wind up stitching multiple images together. Of course, everything written about straight-line distortion at the 10mm end of the zoom is true, but not to an excess, and in my opinion is MORE than offset by the capability to simply “get the shot all at once”. An indoor 6 story atrium that previously took 6 stitched photo’s to capture – now easily captured in 1 shot.
Focus was achieveable at a tiny bit over 4″ from the front of the lens. No IS on this lens, which I missed while trying some low-light shots (I kept waiting for IS to kick in out of habit, since all my other lenses are blessed with this feature), but this is only a concern on extreme close-up’s, which is not generally what you’d use this lens for anyway.
The lens has an AF/MF switch of course, and is only usable on certain camera’s that are compatible with EF-S type lenses (there is tons of online info about that to be read elsewhere). The filter size is 77mm. There is a light hood available from Canon, which I don’t own yet, and I’ve read that it’s marginally beneficial for blocking light since it’s so small in order to accomodate wide angle zooming without getting in the way. I’ll still buy one and put it on for extra front-end lens protection at around $14. It’s easy to bump in to things and a lens hood makes a lot of sense for that reason alone. Anyone who’s ever bent the metal of a filter after lightly bumping in to something, and then struggled with filter removal, lens cap fitting, etc., will know just what I mean.
I took some test shots with the built-in flash, and the 10-22mm lens does block the lower 5-10% portion of the picture at wider angle zooms. I was able to compensate for this in most shots by pointing the camera downward a bit more. Still, I’d recommend an external flash when using this lens, to take care of this interference and of course to get far superior bounce flash shots. There was no issue with the lens blocking any output from a camera mounted EX flash.
No lens creep on this lens. The overall lens length does not change with zooming. The zoom ring is snug, but turns smoothly, as does the focus ring, which can be turned after AF’ing for any fine tuning of the focus. The subject end of the lens does NOT TURN when zooming, which is great for circular polarizers and other filters that need to stay oriented. The lens length is 4″ (with a UV filter attached) from the front of the lens to the camera body face.
At first I thought this lens might be a specialty lens that I would only use when I needed whole room shots or was met with other wide angle challenges, but with an effective 35mm range on an APS-C camera, the quality of this glass makes it a candidate for a lot more uses as well, enabling quick access with a twist of the zoom ring to any action that comes in “close”, or to capture 2 subjects that are not conveniently side-by-side, as is sometimes the case with candid photo’s.
I have to admit that I’m writing this review after taking less than 300 photo’s with this lens, but the image quality and jaw dropping access to amazingly wide “views” that I’ve never had the ability to capture in one shot with a dSLR compelled me to brag “now” about this lens. If I encounter anything noteworthy after taking some more test shots under various conditions, I’ll amend this post.
In all honesty, it’s hard to imagine anyone who has ever been challenged by a wide angle shot not immediately falling in love with this gem once they get in to the field with it. Five star thumbs up on this one. Canon EF-S 10-22mm f/3.5-4.5 USM SLR Lens for EOS Digital SLRs
5 Stars Love this lens! Surprised!
I bought this as a birthday gift for my husband, because he had requested it. I have never been much interested in wide-angle lenses–to me, long telephotos were the ones I lusted for. This lens has changed my mind. It opens up new worlds of photos that I had never thought about!
The quality seems great, as usual with Canon lenses. It’s small and relatively lightweight. The pictures look good to me–I don’t have the chops to evaluate them in a technical way, but the color rendition and sharpness look good.
5 Stars Can’t beat the pictures this lens takes
bottom line, this lens takes amazing pictures you just can’t get with any other lens for this camera. Worth every penny.
4 Stars Amazing lens for 1.6 crop sensor
It’s been reviewed to death here and elsewhere so not much to add from me. Amazingly wide, very good contrast and color, nice details also. The only thing to pick on is the plastic look and feel but it is also the plastic that makes this lens so light and portable.
I know this has nothing to do with the product, but I want to add my comments about Amazon. The packaging seems to be getting worse these days, may be they are going green and using less plastic air/bubble to pack but it does not make you feel good when a 700 dollars lens come bouncing in a box with no impact cushion. Having said that, I would have to say Amazon provides the best customer service/support among other merchants that I buy from, I can always buy from Amazon with confidence because I know they would do anything within reason to make my purchase satisfactory. I buy my gear from a few other online merchants too due to availability but their exchange/return policy is nowhere near what Amazon would do for you.

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