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Canon EF-S 18-135mm f/3.5-5.6 IS Lens Ongoing Review & Testing

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hokiealumnus

Water Cooled Moderator
Joined
Oct 14, 2007
After having plenty of fun with the kit lens (EF-S 18-55mm f/3.5-5.6 IS II), more focal length was calling. I read (and read and read) about various lenses, becuase lenses are not remotely close to cheap.

What I really want is an "L" series lens. They are Canon's top of the line, and as Ken Rockwell puts it the "L" stands for 'Costs a L of a lot of money.' Thus, they were totally out of my price range.

With regard to this lens, I'll start by saying that I put a whole lot of credence in what Mr. Rockwell has to say. He reviews lenses the way I like to think we review hardware - for everyperson. There are photography sites that will run through the same amount of tests that he does and give you the run-down based on complete worst case scenarios. While those are useful, they don't paint the whole picture, as it were. Mr. Rockwell tells it like it is for the regular person looking to purchase camera equipment. He tells you whether it's a good value and whether the normal person will enjoy the use of the part.

Which brings us to this lens. It was mostly (though corroborated by those other sites) his review of the Canon EF-S 18-135mm f/3.5-5.6 IS Lens that made me take the plunge.

That was not the only factor of course, it was also based on the fact that it can be had used for a very reasonable price from Adorama, of which I am now a very big fan (see my reseller ratings review). This lens, which retails for $499 can be purchased used in E+ condition (next to perfect, with perfect glass) for only $274, and less for worse conditions. The way you shop something used the right way (at least for me) is to go to the retail product page. If they have any used in stock, there will be a link in the middle of the page. Currently there are 9 of these lenses used in stock.

Now, remember, not all used are created equal. Not only do they differ in quality (see the ratings scale here; mine was E+), some parts for the same price may have accessories. I looked through all of the E+ lenses and found one with a pouch and a lens hood included. Most of them don't have that, but you can get lucky, so always check!

That, ladies & gents, brings us to the lens today, the Canon EF-S 18-135mm f/3.5-5.6 IS Lens (hereinafter 18-135mm for short), which as mentioned came in a handy-dandy pouch.

canon-efs-18-135-is-02.jpg

In case anyone is wondering what that gobldeygook in the model number stands for, it's not too difficult.

  • Canon = Brand name, obviously
  • EF = Electronic Focus. I don't think you can even buy a lens that doesn't have electronic focus any more.
  • -S = Small format - Canon's 1.6x crop sensors, which are all EOS cameras and quite a few of their other cameras. See Ken Rockwell's summary of those models here.
  • 18-135mm = Lens focal length. Since it's used on 1.6x cameras, that is actually equivalent to 29mm - 219mm. Frankly, I'm unsure why it works like that on a lens designed specifically for 1.6x cameras; I guess for uniformity in the industry.
  • IS = Image stabilization, arguably the best feature on this lens. Canon claims four full stops of stabilization, meaning you can hand-hold the camera using much slower shutter speeds than you could without IS. IS is a huge selling point to me and I'd never buy a lens without it.

There is one other abbreviation that is not included on this lens - "USM", which stands for UltraSonic Motor. Those motors are faster and quieter. They also allow always-on manual focus. That's a significant amount of money over the ones you must use the switch for (like this lens) and it wasn't worth paying full, brand new (there were no used at the time) $549 price for one of those when I can flip a switch and get this model used for only $274.

The first thing I noticed when just picking up the box (it was packaged very well) was that this thing is heavy. It feels like it weighs very close to the camera body, so getting used to the new balance of the camera will take a little white. It's also larger than I had anticipated. Going from the kit lens to this, which is an increase in length as well as girth (this one is threaded at 67mm, where the kit lens is 58mm), is a big jump.

canon-efs-18-135-is-03.jpg

Controls are minimal on the 18-135mm lens, with switches for AF/MF (auto focus / manual focus) and IS (image stabilization), and that's it really, other than the huge zoom ring & smaller focus ring.

canon-efs-18-135-is-04.jpg

There are markings to tell you where you are within the focal range and that's about it as far as any sort of visual reference goes. There are neither focus nor depth of field indicators like on the "L" series lenses.

Speaking of focal range, the zoom ring on this lens is massive. Considering it's where your hand will be spending most of its time when holding the camera, that's a very good thing. Changing focal lengths is a breeze and it's smooth throughout the range. Like most midrange zooms, the short end of the focal length is a bit cramped, with 18-24mm a whole heck of a lot closer to each other than the remaining steps up to 135mm. That's normal and to be expected, but slightly frustrating on the short end.

The focus ring is the smaller of the two and resides toward the end of the lens. This is good, as the focus ring moves when the lens is auto-focusing. Keep thy fingers off the focus ring when the lens is focusing! You don't want to strip the AF motor's gears and kill your lens.

canon-efs-18-135-is-07.jpg

Blissfully, even though the ring moves while focusing, the middle barrel does NOT move when focusing like the 18-55mm kit lens, so you can use hoods and polarized filters with impunity on the 18-135mm model.

canon-efs-18-135-is-05.jpg

Most of the lens is plastic construction -as expected at this price point- but where it actually connects with the camera is metal. You want a metal mount. If you pick up your camera by the lens (which isn't really preferred of course) without a metal mount, you stand the real risk of breaking your lens. This lens has the metal it where it counts.

canon-efs-18-135-is-06.jpg

Putting the hood on makes a decently long lens even longer.

canon-efs-18-135-is-08.jpg

Of course, then you can extend it to the full 135mm focal length. .

canon-efs-18-135-is-09.jpg

Next we'll compare the T3's kit lens with this lens.
 
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Kit Lens vs. The New Lens

When comparing the kit lens included with the Canon EOS T3, it seems like comparing a toy to what I now realize is a real lens. While the kit lens is fine and dandy, it is somewhat limiting, especially in the most obvious place - focal length. I'll start by showing what the T3 looks like with the kit lens.

canon-efs-18-135-is-10.jpg

For anyone not familiar with what an SLR (Single Lens Reflex camera) looks like without the lens part, wonder no more.

canon-efs-18-135-is-11.jpg

canon-efs-18-135-is-12.jpg

Now, the two lenses next to each other, which, as stated, is a much bigger difference than I thought it would be.

canon-efs-18-135-is-13.jpg

Both at their shortest. On the 18-135, that's at 18mm. On the 18-55, that's around 24mm, and can change with focus, because the middle barrel moves when focusing, which does not occur on the 18-135.

canon-efs-18-135-is-14.jpg

Both at their longest. (55mm and 135mm, respectively)

canon-efs-18-135-is-15.jpg

As mentioned before, you want a metal mount to meet your camera. The kit lens does not have a metal mount. It's not a heavy lens, so that's ok I suppose, but it's not as good as metal for sure.

canon-efs-18-135-is-16.jpg

Now we'll get the body and new lens to meet and say 'I do.'

canon-efs-18-135-is-18.jpg

canon-efs-18-135-is-17.jpg

...and with the lens hood.

canon-efs-18-135-is-19.jpg

Lastly, with the hood and at max focal length, and here is a good time to talk about lens creep. Lens creep is when you hold the camera face-down or face-up and the lens creeeeps its way to a different focal length. I'm happy to say - with my very limited use so far - that it doesn't seem to have a problem when pulled in to 18mm. If you leave it out at, say, 35mm, and point it straight down, it does creep some. I haven't measured the creep, but as long as it's not pointed straight down, it doesn't seem to creep...and how often do you actually do that? So lens creep to me is a non-issue so far. This may become an annoyance if it gets worse, and I'll absolutely report back. So far, so good though.

canon-efs-18-135-is-20.jpg

That's it for today folks. I'll be using the lens in our normal product photos and trying, as time allows, to get out and take some actual photos with it. I'll report back as I get to know and use it how it works for me. Shoot, if I get ambitious, I might even try to ferret out some of its reported distortion & color fringing that are supposed to occur mostly at the 18mm end.

As you'll read around the net, you really want to keep this lens up around the 24mm range to keep from the somewhat severe barrel distortion at its widest. That's common on lenses with this large of a zoom range. I'm fine with it, because that's what I expected when I bought it. Color fringing I'm not looking forward to, but some reviewers said they were bad and some (Mr. Rockwell among them) say they're not bad at all, especially for the price - and especially for the extraordinarily cheap used price I got it for.

The only other concern I have is reported softness at its largest apertures. I prefer shooting mostly with my aperture wide open a good bit of the time and will absolutely notice palpable lacks of sharpness. Several reviews said the sweet spot for this lens is f/8. We'll see how it behaves.

Thanks for reading, subscribe to the thread for results! :salute:
 
Have fun with that hokie! Looking forward to your ongoing review. It's not a bad lens for the price, but not great wide open as you mentioned. I thought about getting that lens for the utility, but already having an 18-55 and a 55-250, I ended up going with a 50 prime instead.
 
Hi Hokie, if you're looking for a compact prime lens in the future, I would highly recommend the 40mm f2.8 STM pancake lens. This lens is sharp, INEXPENSIVE but with high quality, metal mount, almost no distortion, silent and quick to focus.

Edit: this is how it looks on my 50D
2vd4adl.jpg
 
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One thing I forgot to mention yesterday - it's always good to get a UV filter to protect your lens. Lenses are investments (even when gotten for reasonable prices). Getting a cheap filter to protect it is always a good idea. After reading around, I decided to get a better-than-the-cheapest option. Multi-coated filters let more light through and prevent filter-induced lens flares.

Thus, I went with Ken Rockwell's recommended Hoya multi-coated filter. This is supposed to be better than others because it is coated on both sides. After using it last night, it does a great job. I haven't had the chance to use it in adverse lighting conditions though, so we'll see how it works outside. So far so good.

canon-efs-18-135-is-01.jpg

After using the lens on a Lian Li case last night, I got to know it a bit. I'll type up a report after editing those photos.
 
Lens Test #1 - Fun With Flowers! (Focal Length Test)

This will probably be one of at least a couple focal length tests. These were flowers I got for my better half last week. I started by finding the closest focus point and moved in from there. This is all hand-held in aperture priority with the aperture wide open; auto white balance, auto ISO.

Lighting was FAR from good - a dining room chandelier with three small globe-type 40W bulbs - so you're also seeing how the lens can deal with detail in a low light situation. No flash was used. I'll list the focal length I thought I was setting next to the actual focal length, the aperture, then the settings the camera chose for ISO & shutter speed.

18mm - 18mm actual - f/3.5 - ISO 1250 - 1/30 sec

canon-efs-18-135-is-21.jpg

24mm - 22mm actual - f/4 - ISO 1250 - 1/30 sec

canon-efs-18-135-is-22.jpg

35mm - 35mm actual - f/4.5 - ISO 1250 - 1/60 sec

canon-efs-18-135-is-23.jpg

50mm - 50mm actual - f/5 - ISO 2500 - 1/80 sec

canon-efs-18-135-is-24.jpg

85mm - 87mm actual - f/5.6 - ISO 3200 - 1/60 sec

canon-efs-18-135-is-25.jpg

135mm - 135mm actual - f/5.6 - ISO 3200 - 1/50 sec

canon-efs-18-135-is-26.jpg

Color saturation is great; it showed the warmth of the fall colors in low light very accurately. Focus seems spot on and the photos don't seem soft to me with the aperture wide open, especially considering the adverse lighting. All in all, not a bad performance.

This series also gives you an idea of how the aperture responds to the focal length. Like most medium zooms that aren't crazy expensive (not to mention heavy), the aperture closes relatively quickly as you extend focal length.

18mm - f/3.5
24mm - f/4
35mm - f/4.5
50mm - f/5
85mm - f/5.6
135mm - f/5.6

My only complaint is that the closest focus is about 1.5 feet, which isn't much of a complaint because it does exactly what the specs said it would do. I like to get very close to the subject for this type of shot, but to get any closer would require a macro lens. Even the "L" series moderate zoom lenses have the 1.5 ft closest focus specification. It didn't budge a bit either - once you get an inch closer, it refuses to try.

I hung the camera off my shoulder (as I normally do when walking around) and there is some lens creep even starting at 18mm if you're bouncing very much, such as going up & down stairs. That's with the hood attached; I haven't tried without the hood yet, but I can't imagine that would change things significantly. It creeps to ~54mm and stays there, so it's not like you'll suddenly end up with your lens fully extended, but it does creep a bit. It seems that's basically what you get when you get a lens that's easy to zoom in & out. The trade-off is a tighter lens that's more difficult to use. I'm ok with that. I think. There is a bit of OCD inside me that wants the lens to stay where I put it, darnit.

On a positive note, I was impressed with the accuracy of the markings on the lens. It's not like there are small tic marks to tell you where 35mm, 50mm, etc really lie and with no effort at all I was able to get it either spot on or within 2mm.
 
Quick & Dirty Distortion Test

These were two photos taken of a Lian Li PC-Q28. Black case on white background makes barrel distortion pretty obvious.

At the short end (18mm), there is a little bit of barrel distortion. It's not huge, but it's there, especially when viewed with this kind of worst-case scenario.

canon-efs-18-135-is-27.jpg

There is also slight pincushion distortion at the long end (135mm), but it's not quite as pronounced as the barrel distortion at 18mm.

canon-efs-18-135-is-28.jpg

Again, these are worst case scenarios and you won't notice them if you're not shooting very straight lines. Without looking for it, I didn't really see any in the flower photos above, and there are plenty of straight lines in the 18mm shot. There is a very little bit there, but it's difficult to discern.
 
Sunstar Testing

Thought I'd test out how the lens handles its sunstars, and the result isn't great, but frankly, who's shooting directly at the sun anyway?! These were literally pointed at the sun. I barely glanced at the viewfinder and definitely didn't double-check auto focus.

The sunstar cleanliness gets better as you keep stopping it further down. I'll list aperture, ISO, shutter speed & focal length

f/13, ISO 100, 1/640 sec, 25mm

canon-efs-18-135-is-31.jpg

f/18, ISO 100, 1/500 sec, 24mm

canon-efs-18-135-is-32.jpg

f/20, ISO 100, 1/160 sec, 19mm

canon-efs-18-135-is-33.jpg

Of course, it improves quite a bit when you put just a few pine needles in between yourself and the sun.

f/20, ISO 100, 1/125 sec, 18mm

canon-efs-18-135-is-34.jpg

There is some lens flare, but it's not too horrible I suppose. The filter is on the lens, so that exacerbated the problem a bit I'm sure.

The moral of the story is, don't shoot directly at the sun!
 
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Sharpness & 100% Crops

The moon happened to be out in the perfect spot when we were out this morning. Lighting wasn't the best - the sun was pretty much straight overhead, which is rarely an ideal circumstance.

f/8, ISO 100, 1/100 sec, 20 mm

canon-efs-18-135-is-271.jpg

Zooming in to the upper right...

f/8, ISO 100, 1/400 sec, 135 mm

canon-efs-18-135-is-281.jpg

Then I took a 100% crop (view the photo at actual size on your monitor, crop from there) to see how the moon looked and it wasn't too shabby at all.

canon-efs-18-135-is-28_100crop.jpg

Another random shot of the moon over the trees.

f/8, ISO 100, 1/400 sec, 135mm

canon-efs-18-135-is-29.jpg

I also ran across woodpecker in a tree. It was dark (relative to outside the tree) and it was going to town trying to find something to eat, but the shot was ok. I am no bird photographer, that's for sure!

f/5.6, ISO 200, 1/200 sec, 135mm

canon-efs-18-135-is-35.jpg

100% crop of that one.

canon-efs-18-135-is-35_100crop.jpg

Seems pretty sharp to me. There may well be better lenses out there, but for the money I'm very satisfied.

Also, after walking around with it for a couple hours today, I'm fine with what little lens creep there is. Occasionally it'll start creeping on you, but for the most part it'll stick at 18mm if you put it there. I was going around without the lens hood today, so maybe that played a part.
 
There is a tree in our neighborhood with beautiful fall foliage, so I took the camera out when it was well lit this morning for some more lens fun. There's no real "test" here, just seeing what it can do.

f/8, ISO 100, 1/80 sec, 21 mm

canon-efs-18-135-is-37.jpg

f/20, 1/20 sec, ISO 100, 24 mm

canon-efs-18-135-is-38.jpg

f/8, 1/60 sec, ISO 100, 106 mm (This is my favorite of the day.)

canon-efs-18-135-is-39.jpg

f/8, 1/160 sec, ISO 100, 106 mm

canon-efs-18-135-is-40.jpg

f/8, 1/160 sec, ISO 100, 35 mm

canon-efs-18-135-is-42.jpg

f/11, 1/400 sec, ISO 100, 48 mm

canon-efs-18-135-is-43.jpg
 
Another Focal Length Test

Went to the lake an a mostly cloudy day the other day. Lighting was awful, but the camera was present, so of course I took some photos.

Side note: I've manually reduced the brightness in most of these; there was a haze that the camera captured perfectly accurately, but that looked like crap. Reducing the brightness just a tad in Paint.net made the pictures 'pop' a lot more.

f/13, ISO 100, 1/80 sec, 18 mm

canon-efs-18-135-is-48.jpg

f/13, ISO 100, 1/100 sec, 24 mm

canon-efs-18-135-is-49.jpg

f/13, ISO 100, 1/100 sec, 35 mm

canon-efs-18-135-is-50.jpg

f/13, ISO 200, 1/160 sec, 87 mm

canon-efs-18-135-is-52.jpg

f/13, ISO 500, 1/250 sec, 135 mm

canon-efs-18-135-is-53.jpg

So yea, if you can't get by with a 135mm lens as a walkaround lens, you need to actually walk to get closer. This is plenty for any non-specialized purpose.
 
Focus Tracking

Being at the lake, I also had the opportunity to test focus tracking (which has as much to do with the camera as the lens) and to my surprise, it was very accurate. Two geese went airborne in the middle of the focal photos above so I zoomed in & got a nice photo of them in flight.

f/13, ISO 1250, 1/160 sec, 120 mm

canon-efs-18-135-is-51.jpg

Of course, I didn't stop there; who would? I tracked a gaggle of geese flying in formation. This was simply auto-focus, hold the shutter release and shoot. The T3 is slow (only ~3fps), but did a great job of tracking the geese with this lens.

f/8, ISO 250, 1/125 sec, 85 mm (all three of these were taken there)

canon-efs-18-135-is-54.jpg

canon-efs-18-135-is-55.jpg

canon-efs-18-135-is-56.jpg

Not too bad at all for this rather inexpensive combo of camera & lens.
 
So yea, if you can't get by with a 135mm lens as a walkaround lens, you need to actually walk to get closer. This is plenty for any non-specialized purpose.

I agree with that 100%. Based on your review, and some others, this lens is something I am strongly considering again. Funny thing is, I always figured I would need more reach (longer focal length). What I am finding out now is, I'm in desperate need of a good wide angle lens most of the time. I'm really not too happy with the 18-55 kit lens I have. I absolutlely love my 50 f/1.4 prime, and highly recommend it, but even that is much too long for the in-city stuff I've been doing lately.
 
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