Showing posts with label autofocus. Show all posts
Showing posts with label autofocus. Show all posts

Saturday, 11 August 2018

Nikon 28-85mm f/3.5-4.5


Let's have a look at the Nikon 28-85mm f/3.5-4.5, a standard full-frame zoom lens from the dawn of Nikon's autofocus era. It was launched back in 1986 as part of the first wave of Nikon AF lenses and remained on sale until the end of the 1990s. Despite being over thirty years old it's pretty good.

Does Benedict Cumberbatch sit at home and write about us? Is he disappointed with us? Jesus was disappointed with us. But he loved us all the same, and I like to think that Benedict Cumberbatch loves us as well, including me.

In the last post I looked at the Canon 28-80mm f/3.5-5.6, which occupied a similar niche in Canon's product range albeit that it was released a few years after Nikon's lens. They were both moderately expensive, slightly upmarket standard zooms that were eventually displaced by much cheaper budget-priced lenses. On the used market they make for an interesting proposition because they're slightly better than the lenses that replaced them. Of the two the Nikon lens is better on an optical level, but it's larger and weighs half as much again as the Canon lens so I haven't used it nearly as often.

The 28-85mm is the chunky fellow on the right. Shown here extended to 28mm. The lens is most compact at 85mm. As mentioned in the text, shiny black plastic wasn't very attractive even in the 1980s.


All of these images were shot with a Nikon F-50 - not an exceptional camera by any means, but blessed with Nikon's matrix metering system, which is consistently good.

There were two versions of the 28-85mm. They were very similar. Mine is the very first, with a serial number that suggests it was made in 1989 or 1990, quite late in the run. Nikon's first-generation autofocus lenses had a distinctive house style that hasn't aged well. The bodies had stark black and white text, with a white-outlined distance scale and a cheap-looking and very narrow manual focus ring. The manual focus ring is the ridged bit of plastic near the front of the lens, here:


It resembles the manual focus ring on Canon's 50mm f/1.8 "nifty fifty". It's connected directly to the barrel of the lens rather than being geared, and it's actually easier to manually focus the lens by turning the front element instead. Nikon's generation one house style didn't last very long - from 1987 onwards the company replaced the plastic manual focus ring with a bumpy rubber grip instead. Traces of the original look survived into the AF-D era but were mostly wiped out in the switch to AF-G lenses, but e.g. Nikon's modern 20mm f/2.8 and 50mm f/1.8 prime lenses still have the old-fashioned distance scale.



I'm not a Nikon person, but my impression is that even Nikon people aren't particularly enamoured of the company's early autofocus lenses. Optically the designs were carried on from their AI-S manual focus predecessors, but housed in plastic bodies, although in a few cases the new lenses were based on the earlier, budget-priced Series E range instead. A couple of them have an interesting specification that wasn't duplicated by later lenses (the constant-aperture 70-210mm f/4 and the 55mm f/2.8 Micro, which was replaced within a few years by a 60mm model) but on the whole they don't stand out nowadays and felt a bit cheap at the time.


In the shot a few paragraphs up the page my 28-85mm is mounted on a Nikon F-50, which isn't period-correct. The F-50 is a budget SLR from the mid-1990s; the 28-85mm was launched a decade earlier, alongside the F-501 / N2020. It's a screw-drive lens driven by a motor in the camera, and at least on an F-50 the autofocus is buzzy and slow. I'm wary of passing judgement on the autofocus because it may well be lighting-fast on a Nikon F4. I can however understand why Canon's USM was such a big deal at the time; the difference between the fast, almost-silent swush of USM and Nikon's whirry gears is stark.



In the previous article I tried to visit Wimpy, but the branch I chose was closed. I am not dissuaded that easily. "Brave heart, Tegan". So I visited Basingstoke, which is essentially a train interchange connected to a shopping mall that backs onto a commuter town.

I have several ambitions in life that I will never achieve. I will never photograph the ship-breaking yards of Chittagong, or have lunch at Kai Tak, or document the radioactive wastes of Pripyat, or stride the landscape of Greenland etc. They are forever beyond my grasp. Eventually Wimpy will be beyond my grasp as well, but not this day. Not this day!

I feel incredibly self-conscious taking pictures of food, but I did manage to take this snap of a Wimpy ketchup bottle:


Somewhere in Britain there's a factory that produces Wimpy ketchup bottles. I picture a worn-down building on an industrial estate next to a train line somewhere up north, perhaps in Huddersfield or Doncaster. The employees have made Wimpy ketchup bottles all their lives. Fifty years ago their business boomed, but over the last few decades it has been in constant decline, but they cling on, like the last few manual typewriter repair technicians in India, or the steam train engineers of China.

They are desperate now. The older employees are nearing retirement. They feel sorry for the younger employees, who will be unemployed when the factory closes. The youngsters will have to move to a different town, and in the long run Huddersfield - or Doncaster, wherever - will become a city of old people just waiting to die. The playgrounds will stand empty. There will be no life, the barest minimum of movement. The city will experience a fate akin to the heat death of the universe, hanging on in quiet desperation until the final subatomic particle undergoes a quantum fluctuation into another universe entirely, leaving blank nothingness for all eternity.

For now Wimpy survives. I have to say that the burger was fine, the fries not so good, the general ambience decent enough. I'm old enough to have visited Wimpy when it was still a "thing", and although I don't have much memory for food the burger tasted as I remembered. The problem is that the prices are higher than McDonalds and Burger King, and even though the quality seems better and Wimpy has table service, the same is true of Wetherspoons, but Wetherspoons has beer and feels like a proper restaurant. The odd thing is that Nando's has essentially the same mixture of qualities but whereas Wimpy is in decline, Nando's thrives, perhaps because Nando's has a distinctive USP - a poor man's imitation of high-class dining - whereas Wimpy has a muddled message. Is it nostalgic? Classy? A party destination? Throwback to the pre-Beatles era? The home of good food, or what?

But enough of this. What's the 28-85mm like on an optical level? Wide open at 28mm it has very mild vignetting:


That was shot with a Kodak DCS Pro 14n, a 14 megapixel full-frame digital SLR from the early 2000s. It was in theory Nikon's first-ever FX camera, albeit that the sensor and electronics were provided by Kodak. It illustrates one of the 14n's many problems. Notice how the sky is purple on the left and green on the right? The 14n and its heirs had a feature that corrected colour casts across the image, which Kodak argued was an inherent quality of SLR lenses. However the problem seems to have affected no other manufacturer of full-frame cameras before or since, which suggests to me that there was something off with Kodak's sensor. The camera's lens optimisation database includes an entry for the 28-85mm but no amount of fiddling with it actually did anything.

Resolution-wise the 28-85mm is sharp in the middle wide open at 28mm, perhaps fractionally better at f/8, improves no more at f/11. The 14n doesn't have an anti-aliasing filter and you can see some moire effects in the text on the street sign:


Out towards the edge it's soft but not awful wide open, again improving at f/8 but not any more at f/11, with some obvious red-blue CA:


In the extreme corners the image is again soft-but-okay wide open, and becomes actually pretty good at f/8 and f/11, again with minor CA:


Compare this with the same shot taken with the Canon 28-80mm, which is soft at 28mm in a way that can't easily be fixed with Photoshop and never gets particularly sharp even stopped down (shot with a 21mp 5D MkII):


At 85mm the lens isn't quite as good. Wide open it's soft, with a glow on highlight edges, but again it gets better at f/8 and stays good at f/11:


Here's another example of the glow wide open, more pronounced this time:


In the corner it goes from being soft to being less-soft, peaking at f/11, but it isn't as sharp as the Canon lens:


It has to be said that unless you're splitting hairs, or perhaps shooting with a much higher-resolution camera, if you lock the 28-85mm at f/8 it's essentially sharp enough across the frame, and even wide open the results are decent. At 28mm it's very good, surprisingly so for an autofocus zoom lens from the 1980s. The build quality isn't very inspiring (the inner tube rocks back and forth slightly) but, again, this lens has survived for thirty years, far longer than I imagine Nikon expected when they built the thing.

As was the fashion back then the lens has a special macro gear that activates at 28mm. You twist the lens to 28mm, push a button, and continue to twist it beyond 28mm, at which point it starts manually focusing in a macro range. In olden times standard zooms tended to have quite long minimum focus distances so a special macro clutch was often added to compensate. The 28-85mm's minimum focus distance is 0.8m, which is further than modern lenses but perfectly usable, so the macro mode feels superfluous.


What happened to the 28-85mm? There's very little about it on the internet nowadays and Google Books has nothing. It seems to have undergone the same kind of evolution as the Canon 28-80mm - at first displaced by a direct replacement (in this case the AF 28-70mm f/3.5-4.5), and then further overwhelmed by a mixture of ultra-cheap plastic-mount standard zooms and more capable, slightly more professional models on the other. Its spiritual successor was the highly-regarded 28-105mm f/3.5-4.5, which I have used very briefly; the 28-105mm was sharper at all focal lengths and focused much closer and is generally a better lens. I imagine its modern equivalent is the 24-85mm f/3.5-4.5 VR, the end.

Sunday, 21 July 2013

Nikon L35AF: Stalking the Misfit Spark

Liberation, London, the Libidex store
Nikon L35AF / Kodak TMAX 400

In the last post I had a look at a compact rangefinder camera from the late 1970s. Since then I've gone on a compact camera trip, and today we're going to have a look at the Nikon L35AF, an autofocus point-and-shoot from 1983. It was Nikon's first ever compact camera, and was released at a time when the company was trying to broaden its appeal. Throughout the 1960s and 1970s Nikon dominated the professional 35mm SLR market - and continued to do so for several years - but it struggled to sell cameras to the man on the street.* Nikons were rugged and the Nikon brand commanded respect, but the consumer-level Nikkorex and Nikkormat were still quite dear, and there was a bloodstained feeding frenzy of competition in the lower end of the market. As Apple found recently with the iPhone 5C, it's difficult for a market leading high-end company to "do cheap".

* Or woman. In those days SLRs were marketed squarely at men. Or at least the adverts were aimed at men; the few women shown holding a camera were either housewives taking snapshots of their children, or they were the stereotypical Daisy Duke-wearing wildlife photographers who (you just knew) had been given a camera by her wealthy husband e.g. you, the man.

Was this because men controlled the family's finances in the 1970s? Was it because this kind of advertising was measurably effective? Was it because camera manufacturers had limited promotional budgets and went with cheap old cheesy old ad firms? I have no idea. Camera adverts have traditionally been awful, and haven't improved over time; Nikon's S60 campaign seemed to be aimed at the Eastern European teen porn market, and Canon's Ixus 75 campaign pulled off the difficult feat of being visually ugly, conceptually misguided, technically incorrect and just plain disturbing all at once.


And so in the late 1970s Nikon made a concerted attempt to broaden its appeal, with the plastic-bodied EM and a range of budget-priced Series E lenses. The L35AF was a late arrival, post-dating Canon's similar Sure Shot by four years, but it seems to have sold quite well, or at least there are lots on the used market nowadays. It remained on sale until 1985, at which point it was replaced by the very similar L35AF2. Subsequent Nikon compacts used the same basic body design until the 1990s. Here's mine:

It has a 46mm filter thread, and I've loaded some Kodak TMAX black and white film.

Fuji Superia XTRA 400, shot at ISO 200

The L35AF has a fixed 35mm f/2.8 lens, with very simple controls - apart from the shutter button, it has a +2 stop backlight compensation lever, a self-timer, and you set the film speed manually. Unlike the Ricoh 500 ME in the previous post there's no way to set aperture or shutter speed yourself. My L35AF has an ISO range from 25-1000, but earlier revisions topped out at ISO 400 (the manual recommends setting the camera at ISO 1000 for 1600-speed film, which would probably work just fine for Ilford 3200 as well).


Most reviews on the internet point out that the L35AF's lens vignettes heavily, but as you can see this isn't necessarily the case. I shot all of the images that accompany this article on the sunniest day of the year, and presumably the L35's program autoexposure was forced to stop down; perhaps the autoexposure system tries to shoot at f/2.8 unless it absolutely can't, and other L35 users took their camera out on duller days.



Two new American imports opened recently, Five Guys Burger And Fries, and Shake Shack. They're aimed at a posher market than McDonald's, posher even than Burger King. They both had huge queues outside them - tended by jolly staff who will presumably be laid off after a few weeks, once the fuss has died down or they go bust - and I wasn't that keen for a burger on the hottest day of the year, so I can't tell if they're any good or not.

Nikon discusses the camera's lens design in an article here. The lens was completed in 1981, two years before the camera was launched, which suggests to me that Nikon had trouble coming up with an autofocus system that worked properly and didn't infringe anybody's patents. Even if the camera had come out in 1981 it would still have looked a little old-fashioned, because the hot trend at the time was for Olympus XA-esque clamshell bodies. The L35AF's sticky-out lens mount looks like a throwback to the 1970s.

Two years later the queues had died down. On the positive side the relatively high prices keep out riff-raff, and you get masses of chips. The burgers are very filling. On the negative side the menu is tiny and they don't have wi-fi.

According to a review in Popular Photography, November 1983, the launch price was $210, but adverts in the very same publication from a few months later list the street price as $149 (versus $250 or so for an SLR with a 35mm f/2.8). For years afterwards L35AFs were a staple of local charity shops, but nowadays everybody has mobile always-on internet so they have all been snapped up and listed on eBay for inflated prices.

The relatively fast lens sets it apart from the tele-zoom compacts of the late 1980s and 1990s - with incredibly slow zoom lenses that were f/10 at the long end - which are basically worthless nowadays. Backpacker magazine has a little overview of the state of the market at the time:


The headline font says 1983. The camera uses an active infrared autofocus system. There are two circular windows just above the lens. The window nearest to the viewfinder has an infrared emitter that sends out an infrared beam. Here's what the beam looks like, with a shot taken by my ancient Game Boy Camera, which is sensitive to infrared:


The other window watches for the beam's reflection, and the camera's digital electronic brain does some simple mathematics to work out how far it should focus the lens. Most SLRs use a passive autofocus system that watches for sharp contrast in the image, but active infrared is cheaper and simpler and works well in dim light, with the downside that it can be confused by reflective surfaces.



The camera has a metal chassis encased in hard black plastic. It feels as if it would withstand being chucked into a glovebox and rattled around and I suspect that lots of them were. The flash unit pops out violently when the camera decides that flash is necessary - you have to hold it down in order to turn the flash off. As a consequence you have to grasp the camera by both hands when you shoot in subdued light:


Some impressive lens flare, there. As with the Ricoh 500 ME in the previous post, hand-held shooting at very slow shutter speeds is easy because there's no SLR mirror slap.

The L35AF takes a pair of standard AA batteries. The camera's only Achilles heel is the battery compartment door, which is flimsy and doesn't inspire confidence. My recollection of the 1990s is that most consumer-level SLRs had flimsy battery compartment doors, it seems to have been a thing.

The viewfinder is large and clear but only shows focus distance and framing. There's no indication of aperture or shutter speed. The camera doesn't have a hotshoe, despite having plenty of space on the top plate.

The L35AF's lens has surprisingly mild distortion.



Apart from being the first compact Nikon (and the first Nikon with autofocus, for that matter), it's also the first ever Nikon with a built-in motor drive. The drive loads, advances, and rewinds the film. It's quieter than I expected but no good if you like to go around photographing women's bottoms clandestinely in public. You might get away with it once, if there's traffic passing by, but once is not enough. The key to victory in the amateur porn market is volume, volume, volume, and in that case a compact digital is a much better bet. Alternatively, hire a model and just pretend that she's a random passer-by. That's what BangBros and the like do.

The clever thing about catering for the ass market is that you can reuse the same models over and over again; change the underwear and no-one will know. Asses aren't as distinctive as faces, which is probably why we have faces. So that we can tell friend from foe.



An Emirates Airbus A380, flying paying customers from Heathrow, rather than sitting on the tarmac smouldering.

Ultimately I didn't warm to the L35AF. It's quite bulky and feels old-fashioned, and although the filter thread is a neat feature I prefer a compact camera to be compact and pocketable. In fact the filter thread annoyed me because it triggered my OCD. The same impulse that compelled me to spend ages working out how tall a person would look from a distance of one light-second whilst writing this post. I've cut that bit out because it was waffly and I wasn't confident enough of my mathematics to leave it in. The joke would only be funny if the maths were precisely correct.

But, yes, I can't help myself from screwing filters into the L35AF's filter thread. The colour shots were taken with a polarising filter, black and white with a yellow filter. In theory I could just ignore it, but it's there, I have to screw something into it, and that chips away at the raison d'etre of a compact pocket camera. It's like having a cock, you know? You see a hole, you can't help but wonder if your cock would fit into it, and it preys on your mind all the time. Does the hole have teeth? Whereas if I didn't have a cock, I wouldn't have that problem. But then again if I was a woman I would spend ages evaluating cucumbers, roll-on deodorants, lipstick sticks etc.


The simplicity and compact dimension of the XA, or the later Olympus Mju, or the Yashica T etc appeal to me more. If the L35AF had been packed with features - a hotshoe, perhaps an intervalometer, manual controls - I would love it to bits, but ultimately it's just too conservative.


What else? My L35AF gets 37 shots from 36-shot Fuji Superia rolls. The motor rewind leaves a little bit of the leader outside the cassette when it has finished rewinding, which is a godsend if you develop your own film, but potentially disastrous if you don't keep track of which rolls you've shot and which rolls you haven't. On a hipster level the L35AF is a bit too obscure to attract the right attention, you'll hunt for ages before you find someone who recognises it. Of all the film cameras I have shot of late, it's the one most likely to end up in a cupboard forevermore. The thing that made it so appealing in 1983 - "it's a Nikon, so it works" - make it feel boring nowadays, and as an arty hipster camera it's a disaster because it's so competent. On an artistic level it doesn't have a distinctive visual signature, and as a practical means of recording the world it's bulkier and more awkward than my XA.

There are only so many ways to compose a picture with a moderately wideangle, moderately fast lens. Here are two of them.