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Customer Review

5,052 of 5,120 people found the following review helpful
5.0 out of 5 stars Why spend more?, March 15, 2005
This review is from: Canon EF 50mm f/1.4 USM Standard & Medium Telephoto Lens for Canon SLR Cameras - Fixed (Camera)
With the 50mm f1.8 lens available for less than a hundred dollars, why spend so much more to get the f1.4? The answer is, you may not need to. It all depends on your seriousness, budget, and how long you need your lens to last.

If you want a "starter lens" for shooting at 50mm (or with prime lenses in general), the f1.8 would be a great buy. 50mm is a very useful and intuitive focal length to spend some time with, because it will portray the world through the viewfinder at about the same distance as your naked eye on all of Canon's consumer-priced dSLRs with the 1.6x crop factor*. (*Updated after extensive discussion in the comments.) So you could buy the f1.8 cheaply, regard it as a "play with it" lens, and get a nice introduction to "prime lens quality." The f1.8 will seem like a substantial step up from kit lenses and most consumer-priced zooms, and amazing bang for few bucks.

So if the f1.8 is such a great bargain, why would the f1.4 be among Canon's most all-time popular lenses? It's that the f1.8 can take the great shot within certain conditions, but the f1.4 delivers within a much wider range of conditions. In other words, "You get what you pay for," and we'll save the best for last.

Affordable-but-Solid Contruction: The f1.4 will likely have a much longer life than the cheaper plastic build of the f1.8, and retain more resale value. It's an investment, rather than a commodity. And it'll be more certain on your camera and in your hand. (My first one finally needed some calibration, after 80,000 shots and extreme wear-and-tear from frequent swapping with my other primes.) Users sometimes report the front glass falling out of their f1.8s. For the f1.4, the main issues revolve around the Micro USM focus motor, which is not as sturdy as true USM.

Focus Versatility: The f1.4 lets your camera autofocus, and then lets you tweak further by hand without flipping a switch - that's called "Full-Time Manual Focus." The f1.8 requires switching back and forth between auto and manual focus. The f1.8 is famously noisy/buzzy during autofocus, has a bare-minimum focus ring, and no distance scale. The f1.4 will autofocus more reliably, especially in dim light, though it will fail occasionally when starved.

Resistance to Abberation: Chromatic abberation (fringe colors) and barrel distortion are evident-but-low for both lenses at wide apertures - that's "prime lens quality." But in comparison tests, the f1.8 is more susceptible to vignetting (shadows around the corners), halation (glowing around the highlights), and lens flare. For instance, lens flare within the f1.4 tends to be more tightly controlled - "in focus" - whereas a bright light source is more like to blow out the whole shot in the f1.8. All these factors improve when stopped down, but lag about a stop behind the f1.4.

Color: However, if the f1.8 catches up at f/8 to the f1.4 by many standards, it rarely catches up to the f1.4's saturation. The f1.4 has "proper-to-strong" color richness at all but the widest apertures, while the f1.8's shots are much more likely to require postwork. (I do, however, get better saturation from my 24mm f2.8 and 100mm Macro f2.8. The 50 f1.4's saturation seems good-not-great by comparison.)

"Headroom": The engineering of both lenses lets you choose the tradeoff between "most possible light" or "most possible clarity." It's by design that you can choose "more light for less crisp," or stop down for sharpness. *Samples vary*, but the average 50mm f1.4 should consistently "get down to sharp" more quickly, "sharp enough" by f/2.0, "very very sharp" by f/2.8 (often exceeding the professional 24-70mm f2.8 L when wide open), and delivering "unreal sharp" by f/4. (I saw insane "specks of mascara sharpness" at f/3.5 from my first f1.4.) Again, the f1.8 will probably lag about a stop behind that curve.

My second 50mm f1.4 performed even better than my first, right out of the box, "marginally sharp" at f/1.4 and increasingly beyond reproach by f/1.8-2. (At f/1.4-1.6, it suffers only from halation and some light fall-off in darker areas.) So if extreme sharpness is necessary for you, shop with a strategy that will let you return your lens or get it calibrated if not up to your needs. My guess is that my first one was more typical out of the box, but it approached the performance of the second after calibration.

(It's also worth noting that the premium-priced 50mm f1.2L is drastically more sharp (and better performing generally) at wide apertures, but *less* sharp at f/2.8 through f/8. The f1.4 is a better "walkaround" performer than the f1.2L lens that costs four times as much.)

Regarding light return specifically, my own experience in lens-swapping baffled me, until I read other reports that the f1.4 exposes a third of a stop brighter than most other Canon lenses. It's brighter in the viewfinder generally, and really IS a whole stop "faster" than the f1.8 at maximum apertures (i.e., the same net exposure at half the shutter speed). If you're willing to sacrifice some clarity, that extra stop can make a huge difference when you're challenged by moving targets in low light.

(For instance, shooting "wide open" for performers in dim venues. Faster shutter for less motion blur. More light for better color. And the edges may be soft at 100% magnification, but *relatively* clear compared to the out-of-focus background. That "illusion of clarity" isn't as likely to print very well, but resizes very snappily for the web.)

So the f1.8 can certainly produce some stunning images, particularly in general daylight photography OR tightly-controlled conditions OR stopped down, but is less adaptable to challenging circumstances that the f1.4.

"The Best for Last...":

Now, with both these lenses, you get the advantage of marvelously wide aperture, which can be used for a tight focal plane that lets the background (or foreground distractions) fall quickly out of focus. This is of course a cornerstone of creative photography, and both lenses give you plenty to explore. (In practice, even f/2.8 delivers a pretty shallow depth of field in close-up shots, so these wider lenses give you even more room to play.)

However, there is such a thing as "blur quality," called "bokeh," based on the number of aperture blades within the lens. The f1.8 has five, and the f1.4 has eight. The f1.8 will portray out-of-focus lights more pentagonally, the f1.4 more roundly. (In focus, those same lights will be eight-pointed stars with the f1.4, ten-pointed with the f1.8 - odd numbers of blades double the number of points.) But most importantly, the blur from the f1.8 can be rather "choppy," especially at wide apertures, while the f1.4's is consistently more "buttery smooth."

In other words, there's more to quality than sharpness - there's also quality where your shot is LESS than sharp. And this is where the f1.4 becomes "a favorite lens" for some people, even at over three times the price of its diminuitive counterpart.

Make no mistake, the f1.8 would make an excellent "starter" lens. But the f1.4 is an exceptionally *serious* lens. Are you still learning to love photography? Then $80 is a fine price to pay for a lens you might outgrow. Or do you already love photography? Then $300 is a worthy price for a true investment that will reliably pay off. So they're both bargains, just buy what's best for you.

(Addendum - Canon also sells a 50mm f2.5 Macro lens around $250. If you NEED macro, it's reportedly pretty good, and for general purpose as well. But it's a) not even as fast as the f1.8, b) more difficult to manually focus than the f1.4, and c) not as creamy in the bokeh, with six aperture blades instead of eight. And Canon's 100mm version is drastically more practical for macro work, and better performing generally. But the 50mm Macro does become a contender, at a "middle price," if what you really need is one decent lens to do as many different things as possible, though none of them as well.)
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Tracked by 19 customers

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Showing 1-10 of 218 posts in this discussion
Initial post: May 15, 2007 1:43:53 PM PDT
modern mommy says:
Thank you so much, this is an excellent and unbiased review. I was wondering which of the 2 I should purchase, and now I realize its not which is best but which is the best fit for me.

Posted on Nov 8, 2007 3:18:00 PM PST
As someone who replaced my f/1.8 with an f/1.4, I can attest to the accuracy (and thoroughness) of this review. The f/1.8 is a surprisingly good lens, but the image quality out of the f/1.4 is better in nearly every category.

Posted on Nov 23, 2007 2:52:35 PM PST
T. Mccartney says:
Honestly, you should have written the product description. I was iffy about this lense untill I sat down and read this review.

Posted on Dec 6, 2007 9:44:38 AM PST
Sheba says:

Thank you very much for your comparative review. It has helped me to make my decision - I'm going with the 1.4! My 1.8 just broke, and I was wondering if I deserve to upgrade after being such a clutz! LOL.

Loved the DOF of my 1.8. Can't wait to see how much "creamier" it is with the 1.4.


Posted on Dec 21, 2007 1:48:29 PM PST
BekaBug says:
This review is the best I have ever encountered on Amazon; it answered every question I had about these particular lenses. Ultimately, I got the 1.4. The bokeh quality on this lens is what sold it for me. Thanks for doing such a great job!

Posted on Dec 31, 2007 6:39:38 AM PST
Avy says:
High five for such a phenomenal review! I bought the 1.8 (2 months ago) before reading this and I love it, but am about to buy the 1.4pretty much based on your comparison. You've definitely made the point of HOW the 1.4 is better quite obvious. I always knew the lower number was "faster" and therefore better, but I didn't know in what ways exactly. I have a better understanding of blades & bokeh now.
Thank you!

Posted on Jan 11, 2008 9:50:20 AM PST
A. Roth says:
Thanks a million for the thoughtful review. Your time and effort is appreciated! I wish my camera shop knew as much about lenses as you do! I'm ordering the 1.4 over the 1.8 with functionality and durability in mind. It sounds like the extra money will be well spent in this case. Again, many thanks!

In reply to an earlier post on Apr 24, 2008 12:50:10 AM PDT
And you, being one more person mentioning that your 1.8 just broke, convinced me also to follow Careful Critic's advice. 1.4 here I come!

Posted on May 20, 2008 11:35:27 AM PDT
R says:
Nice review except for the statement: "50mm is a very useful and intuitive focal length to spend some time with, because it sees the world at the same distance as your naked eye (regardless of your camera's crop factor)." This is incorrect. On a 1.6x crop camera, a 50mm lens is NOT a normal lens, and does NOT see the world the same as the naked eye. On a 1.6x crop camera such as the Rebel or 40D, a 50mm lens is a short telescopic lens, meaning distant objects are magnified more than close objects, so distant objects will appear proportionally larger than close objects than seen with the naked eye. On a 1.6x crop camera, you would need a 28mm or 30mm lens to get the same results that this 50mm lens would produce on a 35mm film camera. Really, 50mm is not the most useful prime for a 1.6x crop camera, as it is the equivalent of an 80mm lens on a 35mm film camera, which is to long for many shots. If you are buying this lens for a Rebel or 40D or similar, I would suggest a shorter lens such as 28mm or 35mm at the most, before considering this lens.

In reply to an earlier post on May 26, 2008 5:04:30 AM PDT
Last edited by the author on May 26, 2008 5:06:46 AM PDT
I'm not inclined to agree - there's absolutely NO reason that a crop factor should change perceived distance, the physics of light entering the glass don't change, and the sensor simply collects less of the total frame - but I'm wary to just automatically rule you out either. I'll start looking through my lens with your point in mind. But meanwhile, why *should* a crop factor change perceived distance? Is that something you can explain?
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