What is a rangefinder camera?

D

Dave

Guest
hi there,

I am a beginning camera buff, and am wondering what a rangefinder camera is, and how it differs from an SLR.
 
Dave,

A very simple explanation, because the difference between these types of camera is equally simple. And I'd never try to bore you with technicalia simply because it wouldn't answer your question... so I'll reply with the knowledge I have.

As opposed to the SLR, which focuses through the lens, the rangefinder measures through an optical instrument called... guess what? A rangefinder!! :)

The rangefinder alone helps you measure the distance between you and another point away from you. When used in conjunction with cameras, it helps focus the lens with precision, so that the pictures are sharp.

Naturally, the fact that you focus through a separate instrument shouldn't surprise you. In fact, SLRs have a kind of rangefinder too, which allows you to "read" the distance in the lens barrel. With rangefinder cameras the focusing mecanism differs because you do not see through the same lens you use to photograph, there are less components between the lens and the film, and these cameras (the rangefinders) tend to be easier to handle and smaller than SLRs, which is why you can use them to shoot under available light.

In the past, rangefinder cameras were extremely simple, but now there are some with AF and electronic rangefinders. The vast array of rangefinders currently available suggests a kind of revival, especially since the SLRs kind of monopolize the market in the mid- to late sixties. Now, with the advent of Cosina-Voigtlander bodies that take Leica, Nikon and Contax mount lenses, we're heading towards a rangefinder renaissance, despite the death threats film has been getting lately.

I hope this answered your question. If not, don't worry, someone else will jump in and correct the mistakes I may have committed here.

Now... come on and register! We're a relatively small and very cordial forum, and we welcome new members like nobody else does! Have fun reading the responses that I'm sure will follow mine! :D
 
Welcome to the forum Dave. Francisco has given you a good explanation. To perhaps add a little to it, rangefinders usually have two windows looking at the front of the camera. One is the viewfinder, and also opens to the back. There is a passage between the two windows. There are mirrors/prisms between the two. Small as that distance is, it is the base of a triangle, with the point of focus being the opposite point of a triangle. In the viewfinder, you see your subject (some object), and overlayed on it, is the view from the other window. When you focus, you want those two images to coincide. When they do, that object is "in focus." In other words, it has been taken to be the other point of the triangle. In a "true" rangefinder, the lens is coupled to the rangefinder, and moving the lens is what moves the mirror/prism to bring the two images together, and therefore in focus. Some cameras have a rangefinder, but it simply gives the distance, and the lens must then be set to that distance or as close an approximation as possible. The lens is not coupled. Since no large pentaprism is required, rangefinders tend to be smaller, or at least lighter. Not having to design a lens that is forward enough to miss the reflex mirror in an SLR often makes the lenses lighter too.

I am going to guess you know what an SLR is, but if not let us know and someone will attempt to explain that also. For a wealth of information on cameras in general, as well as some on rangefinders, you might try http://www.popphoto.com and click on the forums section.

Hope none of the above was too confusing. Maybe Francisco's explanation was better after all.

Do feel free to register and join us here. You don't have to own a rangefinder to learn a lot about photography here, and find informative answers to many questions you may have. You might even decide to get a rangefinder; a small inexpensive one, or one of the big dogs.
 
One of the nice things about not having a mirrorbox as with an SLR is that there's no mirror to be flipped up to make a picture. This makes for quieter cameras, and eliminates a source of camera shake. I can typically handhold a rangefinder at much slower shutter speeds than an SLR without getting blurry pictures.
 
pvdhaar said:
One of the nice things about not having a mirrorbox as with an SLR is that there's no mirror to be flipped up to make a picture. This makes for quieter cameras, and eliminates a source of camera shake. I can typically handhold a rangefinder at much slower shutter speeds than an SLR without getting blurry pictures.

In addition to that, SLR cameras can be difficult to focus (speaking only for manual-focus cameras) in low light or though relatively 'slow' lenses, or even though a stack of filters. Rangefinders don't suffer this problem, because you're not looking through the 'taking' lens - so no matter how slow the lens is, or what filters you might have on it, or how dim the ambient light is, you see quite a bit more than you would with an equivalent SLR.

I have and love my ancient Canon SLR's. But there are times when I find my aging eyes can't focus them very well indoors, etc. Rangefinders really help me then.

Best Regards,

Bill Mattocks
 
Hmm... thanks guys, that's all very instructive.

More questions, if you don't mind...

What are the advantages of an SLR compared to an rangefinder then?

tend to be easier to handle and smaller than SLRs, which is why you can use them to shoot under available light.
Why is that?

I like the fact that rangefinders are smaller - it's more likely they'll be taking pictures that way.

How much can I expect to invest to get going?

I have this feeling that rangefinders might suit me better than SLRs might. Right now I have a digital Minolta Dimage Xt that I take everywhere, but it's fully automatic and doesn't leave much room for flexibility.
 
Dave said:
Hmm... thanks guys, that's all very instructive.

More questions, if you don't mind...

What are the advantages of an SLR compared to an rangefinder then?

The obvious one is that with an SLR, what you see is (mostly) what you get. You're looking through the lens that is taking the picture. Assuming that your camera is functioning properly, when it appears to be in focus to you, it is. I have a number of rangefinder lenses for my CV Bessa R. One of them is significantly mis-adjusted, so when the rangefinder says it is in focus, it isn't. I would have no way of knowing that without seeing the photos - with an SLR, it either is or it isn't in focus.

Also, I have found that SLRs are far better at doing macro work. If you want to take, say, a picture of a flower, close-up, an SLR with an extension tube or macro lens will let you focus right in on it - again, within limits, what you see is what you'll be getting. With a rangefinder, there is always the problem of parralax - what you see through the rangefinder is not exactly what the lens sees. At large distances, that's not a problem. Close up, the problem becomes more pronounced.

An example: close one eye, and hold your hands in front of your open eye at arm's length, forming a frame shape with your thumbs and forefingers. Now 'frame' something with your arms. Now freeze - don't move. Close the open eye and open the closed one. The frame you made has moved, hasn't it? That's because what one eye 'saw' was not what the other eye sees. Same for rangefinders - up close, the difference is more pronounced.

Rangefinder cameras CAN do macro, and there are lots of ways to make that happen - but it's much simpler and usually less expensive with an SLR.


Why is that? [to the comment that rangefinders tend to be lighter and smaller]

SLRS have mirrors and mirror boxes and pentaprisms that make them heavier and more complicated. When you're looking through the lens that is taking the picture, you want a bright image to focus on - so the lens cannot be 'stopped down' while you're composing and focussing. Therefore, there must be a mechanism to stop down the lens AFTER you've composed and focussed, and before the actual exposure is made. Then, the mirror you were using to look with has to swing up out of the way of the shutter/film. Much mechanical swinging about, high precision ballet ensues. This takes up space and is heavier than if you don't have to have it.

I like the fact that rangefinders are smaller - it's more likely they'll be taking pictures that way.

I like the fact that rangefinders are smaller too, and I partially agree with you. But if that were my only reasoning, I could also say that I might as well carry a point-n-shoot compact camera, since it's REALLY small.

It is good to get in the habit of habitually carrying a camera around, I think. And an SLR and a bevy of lenses for it can weigh quite a bit. A fixed-lens rangefinder or even a CV Bessa R and a couple of screw-mount lenses doesn't take up much room. But it's a matter of deciding what you're after and how much you're willing to carry, and also - WHEN you want to carry it.

There are times when I'm willing to use a block and tackle to get my gear in the jeep because I'm going out to burn some serious film. Other times, I toss my Olympus XA in my pocket and head out the door. But they don't both do the same job, you see? There is always some compromise involved.

How much can I expect to invest to get going?

That's really a hard question to answer! You can buy a used but nice condition fixed-lens rangefinder camera from the classic years (1970s) on eBay for under $20 if you wait for the right deal. You can spend thousands on a top-of-the-line Contax or Leica system new in the camera store. Even tens of thousands. I get a nosebleed just LOOKING at that stuff. And there are all kinds of prices inbetween.

Hate to say it, but the real answer is: it depends on what you want to do with your camera(s). Snapshots? Family? Vacation? The insides of volcanoes? Macro shots of fleas? See what I mean?

I have this feeling that rangefinders might suit me better than SLRs might. Right now I have a digital Minolta Dimage Xt that I take everywhere, but it's fully automatic and doesn't leave much room for flexibility.

Ah, you said the magic word - flexibility. If you're looking to take more control over the images you make, you can do that in a variety of ways - digital, SLR, and rangefinder. The important parts are getting control over your aperture and shutter speed. I also prefer to have control over my focus, but that's a personal choice - most autofocus systems work pretty well these days.

Creative control starts with aperture and shutter speed. After that, you can further your control with things like different lenses, filters, types of film, and then once you have the image on film or paper, through scanning and digital manipulation. But it all starts with aperture and shutter speed.

I appreciate that you feel that a rangefinder will suit you better - hard to disagree, this is a rangefinder forum and I certainly love 'em. But I think you'll find that the group here is not particularly religious about cameras - many of us have and love our SLRs too, we just don't spend much time discussing them here. I haven't seen any religious wars over rangefinder vs SLR here (hope I never do), because I think we're all pretty much grownups here - we realize that each plays a part in the body of photography, each has distinct advantages and disadvantages, and some people prefer one over the other exclusively.

If I were you, I would never say never. You can experiment fairly cheaply - you can even rent cameras from most 'pro' camera stores for a day or so and try them out. You can buy used stuff on eBay without breaking the bank. I'd say give rangefinders and SLRs an even try and THEN decide which you like - or be like me - use them both with equal fervor.

In the end, it's the photographer, not the equipment. Yes, it helps to have a hammer and not a screwdriver when you're trying to drive a nail, but in a pinch, a good photographer uses what he or she has to best advantage.

Hope this helps!

Best Regards,

Bill Mattocks
 
well said bill!

for me the biggest advantage the slr has over the rf camera is long lenses. i have a great shot of 2 guys playing frisbee, taken with a 300mm lens, it's a silouette(sp?) with a great big orange sun setting in the background - that shot would not be possible with a rf.
it's all about what you hope to shoot, your style of shooting and the kinds of results your looking for.

nowadays, i only have rf cameras and sold my slr stuff years ago. i don't really miss them but then again, my 'style' of shooting has narrowed also so i don't need them either.

joe
 
Joe,

You're right of course - I didn't think of that last night when I was posting a reply. Although it is always possible to put a very long lens on a rangefinder, without strange and funky accessories, they usually stop at about 135mm, whereas there is no limit on long lenses on an SLR - although the longest commonly seen are about 400mm.

I was thinking of some other advantages that SLRs have over rangefinders (not to disparage rangefinders, of course):

* Depth of Field preview - not all SLRs have this feature, but it can be handy to see what your depth-of-focus will be. I've usually found it to be useful, but not always as useful as I'd like it to be, except when doing macro. But it is not possible with a rangefinder - you have to know your DOF for a particular focal length lens at a particular f-stop and imagine what it will look like.

* Cheaper used kit. In practical terms, although SLR lenses are larger, heavier, and more mechanically complex than the same focal length in rangefinders, there are a lot more of them out there - so used beauties can be a lot cheaper on eBay.

* Sports and action photography. While it is always possible to do sports and action with a rangefinder or an older manual-focus SLR, in practical terms, that field belongs to SLR users, lately to digital SLR users. Auto-focus and AE plus fast digital write times have combined to make it possible to routinely do shots that would have been nearly impossible in the past. Definite edge to the autofocus SLR here.

Some advantages to the rangefinder that I might have missed first time around:

* Less camera shake, since there is no mirror flapping about inside the box. That can make the camera hand holdable at slower shutter speeds. Some SLRs have 'mirror lockup', but when an SLR's mirror is locked up, the viewfinder is blank.

* Quieter. Again, due to the the mirror flapping about inside, a rangefinder tends to be quieter than an SLR. In the past, this often made rangefinders the practical choice for professional 'reportage' style photography. Leaf shutters are especially quiet, sometimes you can't hear them at all when shooting outdoors - just the tiniest of 'clicks'.

* Flash-synch at all shutter speeds - this is a very nice feature, available ONLY on leaf shutters. There were only a few leaf-shutter SLRs, and they're mostly antiques now. Not that many top-end current rangefinders have leaf-shutters either, but many of the classic fixed-lens rangefinders did. My Fujica G-690 medium format rangefinder has interchangeable lenses and leaf shutters in them, very nice feature.

Best Regards,

Bill Mattocks
 
Bill just hit the rangefinder advantages I see most. You questioned the go in cost, with a '70s fixed lens camera you are in for less than $100 and can get quality images to match the standard lenses on modern SLRs. With these cameras the two big benefits I see are,
1) Less camera shake. Without a mirror moving in the camera when the shutter is snapped you can handhold at much slower speeds. I often use 1/30 and have even pushed to 1/15 when needed. Particularly with leaf shutter cameras.
2) Flash sync as mentioned above.
 
rover said:
Bill just hit the rangefinder advantages I see most. You questioned the go in cost, with a '70s fixed lens camera you are in for less than $100 and can get quality images to match the standard lenses on modern SLRs. With these cameras the two big benefits I see are,
1) Less camera shake. Without a mirror moving in the camera when the shutter is snapped you can handhold at much slower speeds. I often use 1/30 and have even pushed to 1/15 when needed. Particularly with leaf shutter cameras.
2) Flash sync as mentioned above.

One thing to remember when talking to a new enthusiast - some older cameras need work! I've had good luck and bad luck, but for someone just starting out, they might blame bad luck on themselves and get discouraged! If you know the risks up front and are prepared, then of course that's a different story!

Best Regards,

Bill Mattocks
 
Keep in mind that when comparing the relative merits and demerits of rangefinder and SLR cameras, that each method has practical limitations in terms of accuracy and precision. These can go one or another depending on whether you are using a wideangle lens or a telephoto. and whether you are shooting in dimlight or bright light.

Also, rangefinders are not all created equal. Precision construction and effective base line length can be important factors.

-Paul
 
Go to Texas or Montana or eastern Oregon. Look around on the ground. If you find a flat, dark, dry, smelly disk of recycled bovine food, it is not a range-finder. Don't keep it. Instead, pay big bucks for a Leica. Or little bucks for a CV.
 
I believe a rangefinder is an all consuming passion that will gobble those excess funds, make you devote countless hours to Ebay searches, force you to buy innumerable filters, hoods, accessories, finders, force you to learn at least the basics of camera repair, make you endure the ever tolerant stare of your loved ones and the barbs of your pro-digital friends,....or in other words a great hobby, fun past time and in the right hands, a useful tool. But that's just how I see it anyhow. : )
 
Maybe I'm showing my age, but I can remember when RF cameras were still the mainstay. About the the only SLRs available were so primitive they took more time than most of what was happening around them. (Exakta, Contax D or S, etc.)

There was a time when Pop Photo ran articles on the comparative merits of the two types of camera.

To me, the biggest advantage of RF cameras is their ability to be hand-held in lower (dimmer) light. I have hand-held my Leica M4-2 down to 1/8 second and gotten decent slides. Also, they are unquestionably easier to focus in dim light.

Oddly enough, on the same day I saw this thread here, there's a thread on the Pop Photo forums asking what a TLR is!! That's as in twin-lens reflex.
 
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