Category Archives: Lenses

Canon 15mm Fisheye lens – Part I

Lenses, Software

Not just a throwback to the sixties

Update November 2009: ImageAlign is out of business and the plugin described here is no longer available. However, something every bit as good is available. It’s called PTLens and you can read about it here. Lightroom3 also now includes ‘defishing’ controls.

The lengthy list of things best forgotten from the 1960s includes long hair, bad music, revolting students …. and done-to-death fisheye lens images. So you can imagine there was no way on earth I would ever contemplate buying one of these gimmicks.

Yet here was the latest addition to my little outfit yesterday:

Canon EOS 5D, 15mm Canon f/2.8 Fisheye lens

A while back I wrote of the stroke of luck I had when I bumped into a fellow Canon DSLR user at Hearst Castle; he was nice enough to let me take a couple of snaps with his super exotic 14mm f/2.8 ‘L’ lens on my 5D body. This was mightily impressive, the creative opportunities legion, but at some $1,800 for the occasional superwide snap I decided I preferred to keep bread on the table. But that super-duper wide angle view stuck in my mind.

With my standard lens on the 5D being the wonderful 24-105mm zoom, a 20mm, the next widest lens, made little sense. The difference between 20mm and 24mm is not all that great, and I felt pretty happy with the 24mm setting on the zoom. Plus I did not want the bulk of a wide zoom lens. Then I found myself thinking about image correction and how much more of this sort of thing is increasingly being done in processing rather than with the camera’s software. Sharpening, exposure, contrast even lens aberrations can be repaired in Photoshop CS2 and Aperture.

Wait a minute! Lens aberrations? Well, couldn’t you take a cheap fisheye and remove the native barrel distortion, giving you something seriously wide at modest cost? So I typed ‘lens distortion correction’ into Google and one of the first results was for a New Zealand (New Zealand?) company named Grasshopper. Turns out they sell a Photoshop Plug-in named ImageAlign so I did a spot of reading which disclosed that this was a natural match for any number of fisheye lenses out there, making straight that which would otherwise be curved. So I plonked down $650 for the Canon fisheye and took a couple of snaps. No way was Photoshop CS2 able to straighten the curves with its modest range of corrections, so I downloaded the trial version of ImageAlign and, hey presto!, straight lines. So another $79 saw me equipped with what is, in effect, a 12mm wide angle after corrections are applied.

Read that again. A 12mm wide angle full frame lens.

August 2008 update: Grasshopper seems to be out of business but the features of ImageAlign described here are now available in Photoshop CS3.

How does it all work? Well, first you have to overcome the bout of vertigo you get from using a fisheye – a new experience for me. (The fisheye, not the vertigo – I get that every tax day already). Then you have to watch out that you don’t photograph your toes or shadow. Easier said than done. The fisheye fills the frame with its image on the 5D and is very, very wide indeed. Don’t even think of using this lens on a non-full frame sensor camera as your fisheye becomes a 24mm wide, so you might as well buy the equivalent lens (a 15mm non-fish on a 1.6x body) to get straight lines in the first place. But you cannot get this wide with anything except a full frame camera. A 1.6x sensor needs a 7.5mm lens to get this wide and they do not exist.

You then load the picture into Photoshop CS2 where the Grasshopper plug-in appears under the ‘Filter’ menu. The interface is everything that Photoshop is not – simple, intuitive and fast. Here is what you see:

Now to get the curves dead straight, you crank in 180 (max) barrel correction:

Almost straight, but not quite. Save this and crank in another 86 degrees of barrel correction:

Now things are straight. It only remains to remove the half moons top and bottom by dialing the Rescale slider to 16 and you are done:

Note that in the conversion nothing is lost from the center top and base, but some corner details disappear. That’s distortion correction for you.

How wide exactly is this combination? Well, suffice it to say that every self-respecting realtor should own one of these. Here’s the main corridor in our home with the 24-105mm at 24mm and with the fisheye:

And here is the fisheye version after correction with ImageAlign:

See what I mean? The price of the old estate just doubled.

It should be added that this lens is not easy to use. You don’t have to get close. You have to get intimate with your subject. Not for nothing does this lens focus down to a few inches. Rumor has it that Canon has not changed this lens in twenty years, and I can’t blame them. Edge definition is far superior to the 14mm that I used and while the little focus motor makes a whirring sound, the focus throw is so short that this is simply not an issue. The 14mm ‘L’ lens is silent, by comparison, and weighs twice as much. It also costs three times as much. No one ever said that silence was cheap.

Canon provides a metal lens cap, which is a shame. Plastic, as supplied with the 14mm, resists scratches and knocks far better. And, for once, you have to keep the stupid lens cap with you as there’s no way to protect the front element with a filter.

In practice, I kept feeling that I was looking at Van Gogh’s Yellow Chair or any one of a number of Bonnard paintings, so tilted is the perspective. You can get some sense of this from a few snaps I took down the road at the Cambria Pines Lodge, whose grounds include a beautiful garden, by clicking here. Some of these snaps are corrected with ImageAlign, some are left native where the distortion does not detract.

One other thing to note is that it makes sense to bracket exposure if in doubt. Digital sensors really seem to hate overexposure, reminiscent of slide film, so you want to preserve detail in the highlights and adjust the shadows later when processing. And chances are that you will have a huge contrast range outdoors owing to the enormous field of view of the fisheye. The last picture in the attached slide show, which is the interior of the Lodge’s Lounge, was taken at the fisheye’s full aperture at 1/20th second, with ISO dialled up to 1600, hand held. The glass of wine I had just enjoyed, visible in the foreground, served in lieu of a tripod. Is it sharp? The 13″ x 19″ print lying on my desk would make your eyes pop.

So there you have it – the widest rectilinear DSLR wide angle lens in the world, with absoutely no discernible vignetting, for some $650. Try it. You might like it. Yes, I know there’s a 12mm Voigtlander lens for film cameras, but before you spring for it and its extreme vignetting and poor resolution, let me remind you that Film is Dead.

Cambria Pines Lodge garden. Canon EOS 5D, 15mm Canon Fisheye, sepia toned in Aperture

Part II of this review appears here.

Canon 200mm f/2.8 ‘L’ lens

Lenses

Finally, a replacement for the magnificent Leica Apo-Telyt-R

Mention of the fabulous Leica Apo-Telyt-R lens in my column on the Leicaflex SL the other day prompts mention of its replacement which I have been using for a few weeks now on the Canon EOS 5D.

Available during the period 1975-98, the 180mm f/3.4 Apo-Telyt was one of the first Apochromatic lenses available for 35mm cameras, meaning there was no color fringing to be seen no matter how big the enlarged print. It was a surprisingly compact lens, weighing in at 1.65 lbs with its built in lens hood. Full aperture definition was as good as that at any other aperture, meaning superb, or as good as your ability to hold it steady.


The fabulous Leitz 180mm Apo-Telyt R

While cursed with yet another clunky lens hood (why on earth did Canon abandon the earlier sliding lens hood? Another Canon lens hood in the garbage can), the Apo’s replacement on the EOS 5D is Canon’s superb 200mm f/2.8 ‘L’ lens. The ‘L’ lens adds the benefit of automatic focus, to boot. As I sold the Apo-Telyt in a moment of foolishness a few years back, I have been using the fully manual Leitz 200mm f/4 Telyt on the 5D where it works well, but you have to stop down and focus manually. A legacy of my Leica M/Visoflex housing days. Closest focus with the Canon is down to 4.9 feet (compared to a rather poor 8.2 feet for the Apo-Telyt) and can be limited to 8.2 feet in the interest of faster performance when the close-up range is not needed. Weights of the two lenses are 1.65 lbs for the Apo and 1.68 lbs for the Canon, meaning the latter uses plastics where possible as it has automatic diaphragm and focus motors to conceal in its somewhat bulkier body.

Automatic focus speed on the 5D is simply startling. So fast you don’t even think of it, though I have taken the precaution of limiting auto focus area selection to the center focus rectangle in the interests of accuracy. There’s not much depth of field at 200mm and f/2.8! The only thing missing is vibration reduction. Now that would be nice to have!

Consistent with my commitment not to get loaded down with gear, I purchased a small cylindrical soft case for the lens which attaches to my belt and, because its overall dimensions are similar to the 24-105mm f/4 ‘L’ , when one lens is on the camera the other makes its home in the belt case. Each is fitted with a clear UV filter, so only a rear cap need be used – I would dispense with that also, but the rear lens element on the zoom is too exposed to take that risk, given my proclivity to thumbprint everything.


The Canon 200mm f/2.8 and 24-105mm f/4 lenses. The zoom (right) is at its longest setting.

Why a prime lens rather than another zoom? Two reasons – weight and maximum aperture. Performance is less of a concern given the high optical standards of Canon’s ‘L’ lenses. I really do not need focal lengths between 105mm and 200mm and the 5D’s sensor allows image enlargement in this intermediate range without compromising definition. Further, any lens with a half-decent maximum aperture that zooms beyond 200mm is impossibly bulky. On the very rare occasions I need something longer I have my 400mm f/6.8 Leitz Telyt to fall back on.

The 200mm is a fine landscape lens, compressing perspective and focusing on essentials.


Canon EOS 5D, 200mm f/2.8 ‘L’, probably at f/5.6.

Best of all, as ‘L’ glass goes it’s positively a bargain, and chump change compared to the Leitz lens which it so ably replaces.


Canon EOS 5D, 200mm f/2.8 ‘L’, at f/3.5. No problem with background clutter!

A Gorgeous Bit o’ Bottle

Lenses

Just mind you don’t fall in the water.

Hearst Castle is the most popular tourist destination in central California so I took the precaution of booking a ticket in advance rather than be faced with a long wait for the tour bus which takes you some two thousand feet above sea level to Hearst’s opulent home. While I may have trashed Hearst for his part in dragging down the quality of journalism, a visit to his Castle on the central coast makes me feel a lot better about how he spent his money. As one of the tour guides pointed out, this magpie of a man expended some 78 of his 81 years collecting, starting with a trip to Europe aged three when he asked his mother why they couldn’t simply buy all the the things he liked. Got to like that!

While waiting for the bus – I chose Tour 2 which takes in the upper levels with all the living quarters, the kitchen and the two pools – I chanced on a fellow photographer using a pretty exotic looking Canon L lens finished in white enamel. Now I had seen these things at televised sports events but had never actually encountered someone actually using one, so my curiosity was piqued.

I confess to being in two minds about that red stripe that Canon places on its best glass. On the one hand it tells fellow photographers that you are serious (or maybe just seriously rich) about your images. On the other, it smacks vaguely of driving around in a Rolls Royce or Mercedes. Rather ostentatious and an invitation to thieves everywhere. Short of resorting to brush and paint, there’s really no simple way of blacking out the offending red stripe, unlike the ease with which electrician’s tape can be used to take out the obnoxious markings on the camera’s body.

Mick M. responded that the lens was a 70-200mm f/2.8 L zoom, and an impressive piece it is. Hard not to be noticed with all that white paint which, I suppose, must leave the nature photographer for ever seeking camouflage. Mick then opened his camera bag to disclose a veritable cornucopia of Canon L glass. Let’s see, there was a 24-70mm zoom, an 85mm f/1.2 portrait lens (yes, f/1.2!), an extender for the zoom and a strange looking duck with an enormous, bulbous front element. Proferring it, Mick explained this was a 14mm f/2.8 ultra wide angle. Not a fish eye. A genuine wide angle. This, I confess, had me greatly intrigued, and when Mick explained that his cameras were a 20D and 10D, the fact that these have small image sensors led me to pounce.

“Why not stick that wide on my 5D and see what 14mm really feels like?”. It was the only trump card I held, what with the one body and just the 24-105 L on it.

What ensued was that the loudest sound to be heard in Hearst Castle’s parking lot was that of jaws dropping. Mick’s, when he held the camera up to his eye, and mine shortly after. Now I had used a 21mm Asph Elmarit on my Leica for many years, to the extent that in some ways it had become my standard lens. Despite the cheesy, distorting, plastic viewfinder it came with, the lens itself was seemingly perfect in every way. Sharp at all apertures, compact and distortion free, it left nothing to be desired optically. Point it into the sun and flare was noticeable by its absence. The Leica 21mm has moved on once I concluded that 24mm at the short end of the Canon’s zoom range was fine for my purposes, but not without a twang or two on the heartstrings. We had become firm friends.

I can only guess that there is some sort of macho rivalry between lens makers – maybe I should refer to them as programmers – when it comes to making the widest lenses. I checked B&H and Leica has a 15mm for their reflex camera (costing about as much as a new car, needless to add), Nikon has a 14mm, and the various after-market manufacturers have 14s and 15s aplenty. Given that all of these run $1000 or more, they can hardly be mass market items and about the only use I can envisage on a daily basis is for unscrupulous realtors looking to make interiors larger. “Here is the bathroom” instantly become “Here is the palatial bathroom”.

Nonetheless, the impact of the lens in the viewfinder was overwhelming, and framing with it, walking towards a subject, gave this user a distinct feeling of unsteadiness owing to the width of the field of view, far in excess of what the human eye perceives. To cut a long story short, Mick very generously offered me the use of the 14mm and I reciprocated with the use of my 5D into which he needed only place one of his digital film cards to have a go. I got first go and on arriving at Hearst’s home in the sky one of the first sights was the outdoor pool. The weather was just so, a wisp of a cloud or two in the sky and a pleasant mild day in California. How do people in the mid-west get through the winter?

Having a fair amount of experience with ultra-wide lenses I knew enough to avoid the bane of all these optics which is boring, extraneous foreground. You really have to get in close, so I proceeded to attack the pool with aplomb, forced to sight through the finder, never having used something this wide before. I can ‘think’ 21mm, but 14mm is like a scene from Hitchcock’s ‘Vertigo’ by comparison. And vertigo was the order of the day as I teetered on the edge of Hearst’s ten foot deep outdoor pool! Now you absolutely have to use the hood with this lens, if for no other reason than there is no way to protect the cyclopean front element with a filter. It is simply too bulbous. And here’s a snap of the pool taken with Mick’s lens.

Though taken directly into the light, the lens seems flare free with just one small internal reflection visible in the picture. An extraordinary piece of design and execution. Will I be rushing out to buy one? No way. It’s the sort of thing I would use once a year and is inconsistent with my desire to minimize equipment, but thank you, Mick, for your generosity in allowing me to take a few pictures with this gorgeous bit o’ bottle.

If you would like to see a travelogue of a few more snaps from Hearst Castle, please click here.

And for a cheaper, wider, better lens than the 14mm, just click here.