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Canon EF 40mm f/2.8 STM Lens - Fixed
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- 40mm focal length, Lens not zoom able, 64mm equivalent focal length on Canon APS-C cameras
- Minimum focus distance : 0.30m/11.81 inch, F2.8 maximum aperture; F22 minimum
- Stepper-type AF motor with full-time manual focusing
- 52mm filters, Lens Construction: 15 elements in 12 groups.
- Focal Length & Maximum Aperture: 100mm 1:2.8
- Focus Adjustment: Inner focusing system with USM; full-time manual focus available.
- Lens Construction: 15 elements in 12 groups.
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|Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping||FREE Shipping|
|Compatible Camera Mount||Canon EF||Canon EF-S||Canon EF||—||Canon EF||Canon EF|
|Focus Type||Stepper motor||Stepper motor||Stepper motor||manual-and-auto||Ring-type ultrasonic||Ultrasonic|
|Item Dimensions||0.87 x 2.68 x 2.68 in||0.91 x 2.68 x 2.68 in||1.54 x 2.72 x 2.72 in||2.69 x 0.9 x 0.9 in||2.48 x 3.07 x 3.07 in||2.01 x 2.91 x 2.91 in|
|Item Weight||4.59 ounces||4.41 ounces||5.6 ounces||4.59 ounces||0.74 lb||0.64 lb|
|Lens Type||medium-format||Prime lens||Prime lens||Pancake||wide-angle||Prime lens|
|Maximum Focal Length||40 millimeters||24 millimeters||50 millimeters||40 millimeters||35 millimeters||50 millimeters|
|Minimum Focal Length||40 millimeters||24 millimeters||50 millimeters||11.81 millimeters||35 millimeters||50 millimeters|
|Photo Filter Thread Size||52 millimeters||52 millimeters||49 millimeters||—||67 millimeters||58 millimeters|
A unique and indispensable addition to Canon’s series of EF lenses, the new EF 40mm f/2.8 STM offers an ultra-slim and lightweight design. Incredibly compact in size, the EF 40mm f/2.8 STM delivers high image quality from the center to the periphery thanks to its advanced lens configuration including an aspherical element, a bright 2.8 aperture, and optimized coatings that minimize ghosting and flare while providing exceptional color balance. The EF 40mm f/2.8 STM’s unobtrusive design helps the photographer avoid overwhelming their subjects with a large lens and to remain discreet in sensitive shooting situations with no compromise in performance. Its diminutive design is complemented by features such as a newly developed stepping motor for smooth and quiet continuous AF while capturing video with the Canon EOS Rebel T4i DSLR, a circular aperture (7 blades) for beautiful soft-focus backgrounds, and a short minimum focusing distance of only 0.98 ft./0.30 m.1-Year Warranty
Legal DisclaimerSERIAL #6310B002 FULL 14 DAY SATISFACTION GUARANTEE AND A 90 DAY PARTS AND LABOR WARRANTY.
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Amazon has a seller that is offering a C-PL 52mm polarizer for these lenses. The polarizers also make better, and more usable lens protectors. The polarizer fits both pancake lenses. These polarizers really oomphed up my photo quotient on my last picture trek. Pictures I took in June before learning the wonders of polarization, could have really benefited from the extra enhancement, but needed more Adobe. The lens has no 'IS', but is not really needed. I like to shoot a lot with the shutter speed high, walk a lot, and find I'm ready for what ever is around the corner. This 40mm is also a good party, macro, or street scene lens. The SF scens I loaded were from a running car on I-80! A nice less bulky item to lug around. The Half Dome sunset scene may not have worked at all with the 18-55mm lens. I will try to remember to do a 40mm vs. 18-55mm compare here also. The differences are amazing.
I bought this 18-55m and T5i kit on Amazon about a year and half ago, added the 55-250mm, and now have the 24mm/40mm. It doesn't take up a lot of space to haul all four of these around. Get the 40mm, you will like it.
CONSTRUCTION: Although a small lens, it feels solid in hand, boasting excellent build: metal mount, beefy plastic barrel and comely industrial satin finish.
STM AF is not silent but makes a soft electronic intonated "sheeeeet," resembling a sound effect from Tron. Most built-in camera mics will pick it up during video recording. The work around is to use an external mic or prefocus before the clip. Focus is slower than ring-USM but silky smooth. The motor uses "focus-by-wire" manual focus. The focus ring isn't mechanically coupled to the lens, but is a simply a switch for activating the focus motor. MF is smooth and accurate, albeit slow. The gotcha is it is only active when the shutter button is half depressed. The nested barrel extends during focus operation.
I use the EF 40 2.8 STM on a 6D, 5D MKII and SL1. AF is dependable on the 5D MKII and 6D, but randomly misses focus on the SL1 about 15 or 20% of the time. Other lenses are fine on the SL1.
IMAGE QUALITY: Wide open at F2.8 my first copy was sharp in the center of the frame but suffered with extremely soft corners on both full frame and APS-C. Corners improved when stopped down to F8 but were still unacceptably soft. Night images with points of light exhibited severe coma (comet-like tail) at F2.8. Stopping down reduced but didn't eliminate coma.
For the above reasons, I returned my first copy and bought a refurbished EF 40 2.8 STM from Canon Direct (with a big discount!). What a difference! Wide open, it was even sharper--deadly sharp--in the center. Corners were greatly improved but still slightly soft on full frame. On APS-C the corners were nearly as sharp as the center. And coma was greatly reduced: no coma center frame at F2.8 and only slight coma along the periphery. So second time around a home run!
Defocused areas (bokeh) have a pleasantly smooth swirl to them at F2.8, helping offset subjects from background. I find 40mm a natural snapshot FOV for full frame cameras like the 6D. The slightly wide view is perfect for landscapes and environmental portraits. Keep in mind, on APS-C cameras, e.g., 60D, 70D or Rebels, FOV is a 64mm equivalent, falling within the realm of short telephoto.
LENS HOOD: Canon makes a dedicated hood for this lens, the Canon ES-52 Lens Hood. It's just a 52mm aluminum filter ring around a disk with a hole in the center. It provides some shade but not much. The 40 2.8 is so popular there's a Chinese knockoff of the ES-62 available for a few bucks less: RainbowImaging HES52 Metal Lens Hood for Canon EF 40mm F2.8 STM. If you want more protection, a generic screw-in type like the RainbowImaging HM52 52MM Metal Lens Hood is better but will spoil the minimalist pancake vibe. I elected to use the ES-52, buying when the price drifted down to $18.
LAST BLURB: Normally $150 doesn't buy much in terms of optics but the EF 40 2.8 STM is the exception to the rule. This lens is sturdy, renders beautiful images and is barely larger than a body cap. If you get a good copy, it's an excellent optic. A basic 6-element design and offshore manufacturing (Malaysian factory) helped reduce costs but compromises in quality control were obviously made to maintain this price point. Test your lens for sharpness and coma before the return period is up. If Amazon delivered a sharp lens the first time, this would be a 5-star review. Nevertheless, I got a great sample the second try so it ended well after some toil and hassle.