Night photographer Lance Keimig takes you on a journey to the Aurora Borealis and helps you from start to finish, beginning with preparation for cold, Icelandic weather and finishing up with exposure...
As editor of photo.net, I'm exposed to a constant stream of questions from
people who can't decide what 35mm point and shoot or SLR camera to buy. Given
that there is hardly any difference between modern Japanese 35mm cameras and yet
folks are paralyzed with indecision, I sometimes wonder how it is that anyone
comes to buy a medium format camera. Before you evaluate lens quality, brand
reputation, included gizmos, electronic wizardry, or ease of renting accessories,
you have to decide what size negatives you want!
Medium format cameras use 120 or 220 roll film, which is about 6 centimeters
wide (2 and 1/4 inches). This size of roll film was introduced in 1898 by Kodak
for its Folding Pocket KODAK Camera. It thus seems safe to say that the world has
reached agreement on the proper height for a medium-format negative. On the other
hand, nobody has ever agreed on the proper width. There are many standard widths
for 120 camera frames: 645, 6x6, 6x7, 6x8, 6x9, 6x12, and 6x17. These numbers are
ostensibly in centimeters although in practice a 6x6 camera such as a Hasselblad
will expose a 56 x 56 mm frame.
My personal choice
I like 6x6. I find that I take better photographs when I park the camera on a
tripod, look down onto the ground glass, and evaluate the composition as though I
were looking at a finished photo. This is known as "waist-level viewing" and it
is only really easy with a square-format camera.
How good would your pictures be if you had to decide on the frame molding
shape, frame material, mat size, and mat color at the moment of exposure? Being
forced to make all of these decisions would probably distract you from making
images. Part of the workload of a 35mm or 4x5 photographer is deciding whether
the subject would be better served by a horizontal or vertical image. Personally,
I find that my photography improves if I'm not forced to think about cropping and
image ratio at exposure time. I experiment with cropping and horizontal or
vertical presentation at night with the square chromes on a light table.
Some of my favorite images have turned out to be square. This is especially
true when the photograph is of a pattern or a collection of objects. The viewer
can see the pattern better if he or she is not hammered into thinking in one
direction or another by a rectangular frame.
The folks who make Hasselblad argue eloquently for the square format in
The Medium Format Advantage
. One of their arguments is that you shouldn't
lug around the weight of a lens that you aren't using. Lenses project circular
image disks. If you park a rectangular section of film behind the lens, you're
wasting much of this "circle of good definition". If you expose circular frames
of film, you're wasting much of the film. If you expose square frames of film
that fit exactly inside the image circle, you're not wasting any film and you're
wasting as little image circle as possible. Thus the lenses for a Hasselblad
(6x6) are much lighter than the lenses for any 6x7 camera.
In fairness to 6x6 detractors, I'll show this photograph of Boston from the
banks of the Charles River by MIT. They would say "look at all that wasted space
at the bottom of the frame". The truth of the matter is that this is a terrible
picture, ruined by the lack of any foreground subject. It would have been a waste
of film even with
my Fuji 617 camera. If you
can't fill a 6x6 frame with interesting stuff then you won't have a good picture.
If you are able to fill a rectangle's worth with interesting stuff, then
you won't mind cropping off a bit of film.
My other personal choice
The 645 format is the smallest, lightest, and cheapest roll-film design.
Negatives are a little squatter than the standard 35mm frame (24x36mm) and
therefore full-frame printing on standard paper sizes such as 8x10 need not
require a cropping decision. What you get is a sharper deeper negative that
enlarges beyond 11x14 with more grace and is easier to handle if you do your own
darkroom work. Sadly, it is also vastly more expensive and difficult to scan than
a 35mm neg, so keep that in mind if you want to
stand tall on the Web with lots of
Fuji has done great things to promote this format. They make 645 lenses that
are just as good as Hasselblad's 6x6 lenses. They charge less than half the
price. Then they throw in a perfectly good body behind the lens for free!
Sometimes Fuji puts a meter in the body, something that apparently costs 'Blad
about $5,000 extra. Sometimes Fuji puts in an autofocus mechanism (they were the
first to do so in the medium-format world). Sometimes Fuji adds a wide-to-normal
zoom lens! Whatever they do, the integrated camera, body, meter, and lens costs
about as much as a Hasselblad or Rollei film back.
The most collectible Fuji 645 is the old folding model with a 75mm lens. I
have a GS645W from this series that takes great wide-angle pictures with a 45/5.6
lens (equivalent to 28mm in a 35mm system). The modern Fujis that you can buy
the photo.net recommended retailers
operate much like 35mm point-and-shoot cameras. (See
Medium Format Digest's Fuji section for more on these cameras.)
If you want something with the flexibility and features of a standard Canon or
Nikon SLR, consider the
Pentax 645N autofocus
system. If you feel compelled to pay double or triple Pentax's lens prices,
the Contax AF 645 system is for you. The lenses have a Zeiss brand name, in which
I'd put little stock, especially given that they're probably made in Japan by
Kyocera/Yashica. What is intriguing is that the lenses contain Canon EOS-style
ultrasonic motors. Pentax uses the ancient Minolta/Nikon-style
screwdriver-blade-in-the-body method of autofocus.
Photographers on portrait assignment for magazines often use the 6x7 format.
The weight isn't a problem since they have assistants, rolling carts, and advance
If you don't have a flotilla of assistants, your only real options are the
Fuji rangefinders (very cheap but no meter) and
Mamiya 7 rangefinder (sort of cheap if you buy it in
Asia; meter in the body and interchangeable lenses including a delicious
super-wide lens). If you want to pretend to be a magazine portrait photographer,
invest in the unbelievably heavy and clunky Mamiya RB or RZ67 system (see
the archived threads in the Medium Format Digest). If you want to pretend to
be a starving artistic nature photographer, throw a Pentax 6x7 II system into
your beat-up full-size van. This is a huge 4-pound SLR body that includes a prism
the result is what looks like an old Nikon on steroids. Lenses are sensibly
Fuji makes a very interesting GX 680 III camera. It is similar in size and
weight to the huge Mamiya RB/RZ system but you get modern electronics and the
same perspective controls that you'd find on the front standard of a view camera.
Fuji makes a rangefinders that are remarkably cheap, light, compact, and high
quality (as of 1999, you can choose between 65mm and 90mm lenses). Regrettably
they don't include a meter.
6x12 is a panoramic format that is interesting because it is the largest hunk
of roll film that will fit into a standard 4x5 enlarger. If your ambitions
stretch to larger formats, you'll be limited to contact prints, digital imaging,
or professional photo labs.
If you already own a 4x5 view camera, a cheap way to get into 6x12 is with a
roll-film back. You're saved the hassle of loading film holders but the other
operational annyances of the view camera will still slow you down. On the plus
side, even with the very cheapest view camera and 6x12 back you get perspective
control, something that will cost you northwards of $8000 in a Linhof 612 PC
outfit (includes one lens, a Schneider 58mm XL that costs $1,213 in a view camera
With a rotating lens on a 612 camera body, you can get some very interesting
photos. The Noblex is the most common example of the breed, producing a
146-degree photo free of distortion and light falloff.
If it pains you to take more than four pictures on a roll of film, a 6x17
camera is for you. Check
my Fuji G617 review
for some sample images. The right camera to buy in this size is a used Fuji G617
(the old one without interchangeable lenses). I got mine for $2200 in flawless
condition. The things that it really could use are perspective control and the
ability to focus closer. What the market has delivered instead are 617 cameras
with interchangeable lenses and breathtaking price tags. For the same price, you
could get a G617 and a 4x5 or 5x7 view camera system for the times when you
needed a different focal length, a closer focus ability, or perspective control.
Internet's biggest, best, and best-archived discussion of medium-format
I'm going to try to keep tossing in photos here that show the advantages of
various medium format cameras and image dimensions.