Olympus


A while ago, I had written about a Bower made Minolta AF to OM adapter that I was able to use on my Minolta 800si/Sony Alpha 700 to mount Zuiko and other 3rd party OM mount lenses.

The Bower adapter is actually a weak teleconverter since it has a glass element that permits infinity focus – since I got the A700, I have been checking out all my manual focus prime and zoom lenses – Zuiko, Vivitar, Sigma, Soligor, Panagor and Kiron primes and zooms. Most of them fit on the Alpha 700 without any problems – with the exception of the Zuiko 28mm f/3.5 and the Zuiko 35mm f/2.8 (more on this in a future post)

There was a very interesting discussion on the DP Reviews forum regarding the use of manual focus Olympus OM Zuiko lenses on the Sony Alpha series cameras. I had participated in the discussion and shared the information I had about mounting manual focus lenses on the Sony Alpha 700. However, the DP Forum’s website seems to have had a technical failure, and about 5 days worth of forum topics have been lost. All the reply postings have vanished – except for the question itself. Bummer.

Zuiko/OM lenses on the Sony Alpha Part II



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olympus/zuiko by Ajoy Muralidhar is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
text and images © 2008 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners. thank you for visiting olympus/zuiko.

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There’s a lot of confusion when it comes to using lenses designed for 35mm cameras on the current crop of Digital SLRS. Many photographers have sizeable investments in 35mm lenses for their film cameras, and for the most part their lens investments drive them towards a particular digital camera body, whether it’s Nikon, Canon, Minolta (Sony), Pentax or Olympus.

Luckily, all the manufacturers retained their old AF mounts, except for Olympus, which uses the newly designed Four-Thirds mount. Sony retained the Minolta ‘A’ autofocus bayonet mount for the Alpha series cameras, allowing all the fine 35mm lenses out there since 1986 to be used. The same goes for Nikon and others.

However, due to cost constraints at the present time, most digital SLRs use a sensor that is smaller than the 35mm format size of 36mm x 24mm. This smaller format is 22.7mm x 15.1mm, and is known as the APS-C format. Sony and Nikon (and others) use a sensor size that is approximately the APS-C format size. As can be seen, the APS-C size provides a much smaller image area, 342.77 square millimeters versus 864 square millimeters for the standard 35mm format.

When a 35mm lens is used on the current crop of digital cameras, the smaller sensor size means that the 35mm lens will now have a narrower angle of view (also called FOV or field of view) than when used on a 35mm film camera body. This is due to the fact that the 35mm lens creates an image on the film (or sensor plane) that is is sufficiently large enough to cover the 36x24mm frame it is designed for.

When used in a Digital SLR that has a smaller sensor (and thus image size), the image formed by the 35mm lens is still the exact same size as before, but the smaller sensor can only use a portion of it. In effect, this constitutes an “in-camera” crop. This cropping is determined by the ratio of the sensor size to the 35mm format size, distance of the image plane from the front of the lens etc.

In most of the cameras using APS-C size sensors, the ‘cropping’ is equivalent to using a lens that has a narrower angle of view (telephoto effect). This Crop Factor (also known as Focal Length Multiplier) is around 1.5x (Sony Alpha) 1.6x (Nikon). In some cameras, Canon uses a sensor size that is slightly larger, which gives a 1.3x factor (this is the APS-H format). The Four-Thirds system used by Olympus and Lumix (Panasonic) has a 2x factor.

The focal length does not really change, of course. The smaller sensor’s ability to register only a portion of the total image causes an APPARENT increase in focal length due to the cropping. This has the effect of using a lens with a narrower angle of view, the same as using a telephoto lens. (Luckily, the sweet center portion has the sharpest part of the image).

The image edges which may not be sharp, or have aberrations are cropped in-camera. For the user, it’s easier to remember by multiplying the focal length of the lens they are using with the factor for that particular body, and that gives us the APPARENT focal length.

A lot of the confusion can be eliminated by using the term APPARENT rather than EQUIVALENT. for example, on my Sony Alpha 700 (which has a 1.5x multiplier for 35mm lenses), it would be more accurate to say that my Minolta 50mm lens has an APPARENT focal length of 75mm, rather than saying my Minolta 50mm is EQUIVALENT to 75mm.

This apparent increase in focal length does not affect the aperture, so the APPARENT focal length of 75mm is still at a fast f/1.7. This will serve as an excellent portrait lens, since it can frame head and shoulders perfectly, but you’ll find yourself having to move back when you want to include more of the scene.

For most wildlife photographers, birdwatchers and even landscape photographers, the apparent increase in focal length can be a unexpected blessing – they get more ‘bang’ for the buck from their existing lenses. When coupled with the higher ISO capabilities of DSLR cameras and in-camera image stabilization that will let them handhold the camera in situations that would have required them to lug along a heavy tripod.

If you’re using a MACRO lens, such as, for example my Sigma 50mm f/2.8 (a very sharp lens with a true 1:1 macro capability) the apparent increase in focal length permits the macro subject to be fill the frame without moving in as close. Since the stand-off distance is greater, more light can reach the subject. The increased distance also helps when photographing skittish subjects that are likely to fly or hop away if approached too closely.

When the subject is framed in the Sony Digital SLR, it is seen that the Depth of Field is greater for the same magnification when compared to using the lens on a 35mm film camera like my Minolta Dynax 800si. This is a great advantage for macro-photography where depth of field and subject lighting are always problematic.

The whole situation is different when it comes to wide angle lenses. This is where most photographers are ready to burst into tears. The 1.5x or 1.6x multiplier effect holds good on the wide angles too, and this means that a normal wide angle like 24mm lens which would give a 74 degree field of view on a 35mm format camera will now only provide a FOV of 62 degrees or so, approximately that of a 35mm lens. In the same way, an ultra-wide 16mm becomes an apparent 24mm a 28mm is an apparent 42mm and a 35mm lens behaves like a 52.5mm normal lens.

Given the fact that most wide angle lenses are EXPENSIVE, no photographer would like to see his investment reduced to a moderate wide-angle or a normal lens. However, such is life. You win some, you lose some. To get a true wide angle on the Sony Alpha 700, I would have to invest in a 18mm to get 27mm (luckily, that’s included in the zoom range of my Sony 18-200mm lens that I bought with the camera). Since the 18-70mm is bundled as a kit lens, most owners will have at least a 27mm wide angle, albeit a slow one).

To get the 24mm, we’d have to invest in the very expensive Sony 16-105mm Zeiss coated zoom lens (apparent focal length 24- 157.5mm). Buying a faster wide-angle prime lens would be prohibitively expensive for any amateur, and even professionals would hesitate.

My advice? If you really need to shoot wide angle, just use your film camera. You can still buy a fine Sigma 24mm f/2.8 AF at a reasonable price. The Sigma 24mm is a good deal, since it had a matte black Zen finish that tended to flake off, giving the lens a “very used” appearance and usually marked down. This is just cosmetic, and does not affect the lens performance in any way.

The same Sigma lens was re-badged and sold by Ritz as their house-brand Quantaray lens, but with a different, more durable finish – but it’s still the same lens. Don’t be fooled by the appearance of either lens – this is a very high quality lens. Besides, you can always use the Sigma on the digital SLR as an apparent 35mm f/2.8 prime lens in place of a ‘Normal’ lens. You’d pay hundreds more to get a similar “designed for digital” Nikon, Sony or Canon lens.

Of course, all this talk about crop factors and multiplication factors will become moot when Full Frame digital SLRs become common. Canon already has one, and Nikon and Sony will follow shortly. In fact, I would not be surprised if the Sony Alpha 900 was not released in a few more months. When that happens, lenses will behave as they were designed and there will be no more confusion.

As for me, I rather like the fact that my Tamron 70-300mm now behaves like a 105mm-450mm super-zoom. With the Image stabilization turned on, I can actually hold that baby steady enough to use hand-held.



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This work by Ajoy Muralidhar is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.
text and images © 2008 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners. thank you for visiting olympuszuiko.

I admit it – I am smitten by the black models of the old metal bodied manual cameras. Why black? In the old days BP (before plastic) black was the color of the “professional” model cameras. Why? I’m not exactly sure, since there are so many contradictions here… perhaps the black was less conspicuous than the shiny chrome bodies, perhaps they reflected less light. (but then, some of the BIG lenses were made in a white finish, ostensibly to keep them from heating up too much in the sun.)

The fact remains that black became associated with the “pro” as opposed to the chrome “consumer” models. Now some cameras were made exclusively in black, pro or not, but that’s an exception. For some reason, fewer black models seem to have been made as well, and that adds to the mystique.

Consider this… the black was usually enamel paint on the brass body, which did not hold up as well as the chrome finish – consequently, the likelihood of the black enamel wearing off and showing the metal underneath was high, as seen from the ubiquitous ‘brassing’ that is common on black body cameras. A black camera with a mint (read as no brassing) finish usually fetches a much higher price than its chrome counterpart because of its relative rarity.

I am not sure what the production ratios of chrome to black models were in the manufacturing mix – there are probably more black-bodied cameras out there than we realize. Taking the OM line for example – the OM-1 to OM-4 are considered the professional bodies, there are far more chrome versions than black, which gives the lie to the notion that black = professional.

Now consider the consumer version of the OM bodies, viz, the OM-10 through OM-40/PC). Since they are for the regular Joe Amateur, they should be all be chrome, right? But no – it turns out black versions were made for these cameras as well. The OM-40/PC

was made ONLY in a black version with rubber armored bodies, so we won’t take them into consideration.

Looking at the all the OM-10 cameras that regularly show up on eBay, I was lulled into thinking that they were only made in chrome – then Bam! I came across a BLACK OM-10. Never saw one of those before. It was in great condition too – not a bit of brassing.

Sheer chance plays a big part as well. The first Olympus camera I purchased was a black OM-1.

It wasn’t because it was black or anything. I was looking at manual cameras in a pawn shop one day, it was just that the shop had 2 Olys, an OM-1 and an OM-PC and I picked the OM-1. At that time I did not not know anything about the Olympus OM System, it was cheap, and looked much more sturdy than the OM-PC with its rubber body. That’s all.

Most of the old manual lenses were black. The black lenses looked great on black cameras and looked good on the chrome versions, since the leatherette on the chrome was black as well, the black lenses blended right in. Lots of AF lenses were made in chrome/silver plastic bodies though. They look fine on the chrome bodies, but look hokey on the all black bodies. But that’s just my opinion.

All the lenses I have for my Minolta Dynax 800si (late 90’s manufacture, so naturally, big black plastic body) are black. I resisted the impulse to purchase the silver/chrome Maxxum AF lenses. Anyway, the only Maxxum lenses I purchased new were a nice Maxxum AF 50mm f/1.7 when I bought the camera. The other new lenses were a black Tamron 70-300mm f/4-5-6 and a black Phoenix 28-105mm f/2.8-3.5. The rest of my Minolta AF lenses were bought used off of eBay and Craigslist. Hey, I’m Joe Amateur, remember? I have to go Cheap.

Now for anyone on the trail of a black body camera, please watch out for touched up or repainted ones. That is a strict no-no. Besides, they look so fake and terrible. I’d rather have a heavily brassed black camera than one which had a mint looking refinished paint job.

I’ve heard that Nikon had a program years ago where professional photographers working for the leading pictorial publications of the 70’s could send in their battered camera bodies (hey, they were out in the Amazon, Siberia, Australia, Sahara, the Himalayas… what can you expect?) to Nikon, and they would refurbish them and send them back. Even repaint them. I suppose that if the factory did the painting, one could not complain.

However, I have never heard of any of the other manufacturers having such a program, so I’d consider a new paint job on an OM as fake as a $3. bill. That said, an individual collector may decide to have one of his many bodies refinished with glossy black enamel and some jazzy leatherette. More power to them. A little brassing and paint loss, even a small ding or two never hurt a camera. Besides, they ARE from 30 years ago. And if one plans on using them as real shooters, a little wear and tear is to be expected.

Everything changed as manufacturers realized that they could make the bodies much more cheaply in plastic. One small glitch though – back then, the coating technology was not so advanced as now, and “chrome finish” on plastic looked awful and wore off really quickly. It was far easier to make all the bodies in black plastic. That became the new norm, and has stayed with us ever since.

Things changed again in the late 90’s – it became possible to make “chrome look” plastics, and lots of the later consumer model SLRS changed to the chrome/satin finish. Some point and shoots were even made in a “champagne” colored plastic body. With the coming of the digital point and shoot cameras, hard-wearing chrome plastic came into its own. So did colored plastics. But that’s another story.

Anyway. The ‘black’ bodies extended to the point-and-shoot cameras and the rangefinders as well. I have a black Olympus Trip (I love this one)
and a black Olympus 35 EC.

Recently, I found a black Yashica MG-1, a black Ricoh 500G (this is one case where the silver one looks cooler, but that just me). Rounding off the Black cameras are a Honeywell-Pentax Repronar Camera body with bellows,

and a black Ricoh CR-5.

I also have a black Yashica Dental Eye

( an FX3 type body, I believe).

The black models usually cost an average of 3 times the price of a regular chrome (and in some cases, where the camera is in excellent condition, much more.). Rounding off my black collection is an excellent Olympus OM-2n.

Keep in mind that the coating is just skin deep. Black or Chrome, it’s still the same camera. Don’t go out of the way or way over your budget to get one, unless you are comfortable with the price. Above all, make sure it’s a shooter. What good is a camera that’s only fit for a display case?



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This work by Ajoy Muralidhar is licensed under a Creative Commons Attribution-Noncommercial-No Derivative Works 3.0 United States License.

text and images © 2008 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners. thank you for visiting olympuszuiko.

Some more Fall pictures. These were taken near Dufief Pond, and at Morris Park near Rockville. A couple are from Turkey Run State Park off of the GW Expressway. This year, Fall was pretty spectacular, even if it seemed to come a little late. We had a generally warmer than usual Fall this year, and the rains came just as the leaf color was reaching it’s peak, so I probably did not get the very best pictures, especially since I was only able to get out during the weekends.

Nature waits for no man… and so it is with Fall colors. I wish I could take a week off during the peak Fall days, but that usually impossible because it’s the busiest time of the year at work. Most offices are winding down projects and programs in preparation from the Holidays, and being able to get outside and spend some time communing with Nature is a welcome respite.

These pictures were taken on short hikes with my daughter Sunny – she loves being out in the woods. I was using my black Olympus Trip 35. I don’t get that one out much, since I am afraid that I will scratch the black finish. The Olympus Trip 35 never ceases to amaze me – the simplicity of the camera belies the extremely sharp lens with its beautiful color rendition and forgiving zone focus system. You can hardly ever go wrong with this little camera.

Compare these with the pictures of Dufief Pond taken with my OM-2n and Tokina RMC 70-210 f/3.5


Olympus Trip 35 – Dufief Pond
Olympus Trip 35 – Dufief Pond
Olympus Trip 35 – Dufief Pond
Olympus Trip 35 – Dufief Pond
Olympus Trip 35 – Dufief Pond
Olympus Trip 35 – Turkey Run
Olympus Trip 35 – Morris Park
Olympus Trip 35 – Morris Park
Olympus Trip 35 – Turkey Run
Olympus Trip 35 – Turkey Run

Olympus Trip 35 – Dufief Pond
Olympus Trip 35 – Morris Park Woods
Olympus Trip 35 – Turkey Run
Olympus Trip 35 – Turkey Run
Olympus Trip 35 – Turkey Run
Olympus Trip 35 – Turkey Run
Olympus Trip 35 – Morris Park
Olympus Trip 35
Olympus Trip 35 – Berries, Westminster

Photographed with an Olympus Trip 35, Fuji Super 200 film. Zone Focus at 6ft, 10 ft and Infinity settings.


text and images © 2007 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners.
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Earlier this summer, I as testing my Toyo 500mm lens, happened to stop by at the Lady Bird Johnson Park off GW Parkway. The Navy memorial is located at one end of the park. Park affords a great view of the Washington Memorial and the Jefferson Memorials across the Potomac river. The other lenses I had that day were the Zuiko 200mm f/4 and the Zuiko 35-70mm f/4 and the reliable old Olympus OM-2. I figured it would be a great to be able to compare the lenses, so busily switched lenses for these shots – the early summer evening ensured that there was lots of light on the Memorial buildlngs, but most of the Potomac river was in shadow. It was a challenge to handhold the Toyo Fivestar 500mm lens for the shot of the Washington Memorial. Next time I’ll remember to lug a tripod along.


Zuiko 35-70mm f/4 at 35mm
Zuiko 35-70mm f/4 at 70mm
Zuiko 200mm f/4
Zuiko 200mm f/4
Toyo 500mm f/8 at f/11
Toyo 500mm f/8 at f/11
Zuiko 35-70mm f/4 at 70mm
Zuiko 200mm f/4
Toyo 500mm f/8 at f/11

Photographed with an OM-2, Zuiko 35-70mm f/4, Zuiko 200mm f/4, Toyo Five Star 500mm f/8. Film was Fuji Superia 400, and exposure was calculated with the Sunny 16 rule. Exposure for all 3 lenses was 1/500 at f/11, using a Polarizer.


text and images © 2007 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners.
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First roll off my Olympus 35 RC. I finally got around to changing the seals on this old mechanical beauty – the Olympus 35 RC was one of the last mechanical Rangefinders that Olympus made. The RC has an Auto mode – it’s a shutter priority system. You set the shutter speed, and when the camera is on Auto, it will set the Aperture. I prefer using the Sunny 16 rule, and was glad that the RC offered a manual override that allows me to set the aperture as well.

I was very curious about this particular camera – it’s very similar to my Ricoh 500G, and I had been looking for an Olympus rangefinder for a long time. The camera is a joy to use.. the operation feels smooth and precise, and feels comfortable in the hand. The Olympus RC details are in the in the Olympus Cameras page along with a description.

All of these pictures were taken near my brother-in-law’s house in North Potomac, and in the grounds of the park adjoining the neighboring Dufief School. As can be seen, the lens on the Olympus RC is outstanding. I love the way it renders the Fall colors. These old cameras had single coated lenses, and that did something magical for the color and bokeh given the right lighting. This is something that I feel the new multi-coated glass/optical plastic lenses cannot replicate. But again, maybe it’s just my imagination.


Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC

Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC
Olympus 35 RC

Photographed with an Olympus 35 RC rangefinder camera, Fuji Super 200. Exposure was 1/250 at f/8 and f/11


text and images © 2007 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners.
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Sauter’s Delight is a farm located just outside of Westminster, MD on Old Bachman’s Valley Road. It’s very picturesque, and I have photographed it several times. Also, since it’s easily accessible, because it’s easy to park by the roadside without having traffic whizzing past all the time. These were taken over the course of the year, from Late Winter through Early Summer to Late Summer with different cameras, lenses and film using the Sunny 16 rule.


Late Winter, OM-1, Zuiko 50mm f/1.8
Late Winter, OM-1, Zuiko 50mm f/1.8
Early Summer, OM-2, Vivitar 24mm f/2.8
Early Summer, OM-2, Sigma 35-105 (60mm)
Late Summer, OM-2, Zuiko 200 f/4
Late Summer, OM-2, Zuiko 200 f/4

Photographed with an OM-1 and OM-2 Camera, Zuiko 50mm f/1.8, Sigma 35-105mm, Zuiko 200mm f/4 and Vivitar 24mm f/2.8 lenses on Fuji 200 and Fuji 400 film. Exposures ranged from 1/500 at f/16 to 1/250 at f/8


text and images © 2007 ajoy muralidhar. all names, websites, brands and technical data referenced are the copyright or trademark of their respective owners.
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