Monday, October 6, 2025

You call that wide angle?

 

My recent experiences with much longer than usual and a little shorter than usual distances from the pinhole got me wondering about going even wider than the 20mm front, which captures a 113-degree view. The Variable Cuboid is made to accommodate as short a front as 10mm. What is it like going into that frontier? I've actually made one exposure in a 16x20-inch camera that's almost that wide. I decided to take a more modest step and make a 15mm front, which would give a 127-degree angle of view. It took me almost all afternoon. It has a 0.18mm pinhole from my cast-offs, mounted in an extra-wide shutter opening so nothing got in the way.

The only camera I know of this extreme is Zernike Au's Zero 4x5 System, which has three sections so you can use it at several angles. The shortest is 25mm, slightly wider than my new front, but only in one dimension because of its rectangular format.

When I started making 6x6cm cameras, they were 60mm from pinhole to film. Moderately wide angle to a lens user at 53 degrees, it's whoppingly narrow angle in the pinhole community. My reason for avoiding the popular wider angles was because of the inevitable vignetting. The closer the pinhole is to the film, the farther the light has to go to get to the corners and spreads out more than it does in the center. With this 15mm front, it's over twice as far, which calculates out to four stops. If you've ever under or overexposed a roll of film by four stops, you know what a big deal this is. You'll just get the highlights, if any, at the edges, and the center is going to be overexposed.

I always expected, and saw a lot of examples, of bright circles of image which faded to black well before the edge of the frame. This is sometimes considered as seeing the entire projected image of the pinhole. I see it as not using the whole piece of film.

As I built wider and wider cameras, I found that this could be managed to a point. Firstly, by using semi-stand developing, which holds back those overexposed centers from getting too dense. Reducing the contrast when scanning makes sure it captures everything that's in the negative. If a little at the top and bottom of the histogram is lost in that process, it can easily be brought back to the full range. With 16-bit grey scale files, there's plenty of data to get a completely smooth JPEG. Then I quite liberally treat the image locally, dodging any detail in the corners, burning in the middle, switching between the tool's ranges, and recorrecting the brightness and contrast as necessary.

There are still the dark corners directing the eye to the center that is so prized by vignettophiles, but there is also a composition of the whole frame.

How much difference will another 14 degrees make? 

All except two of these are the entire negative, and those two are still wider than the 20mm. 

The entire Sunroom, from just above my head. The camera looks pretty high up, but I could reach it without extending my arm. Some photons make it to the edges, but mostly just the highlights.



It's no trouble exposing the edge if it's bright enough. Another thing illustrated here is how exposure and resolution are degraded because, from the edge, the pinhole appears to be a rather flat ellipse, further reducing its area, and flirting with serious diffraction. I've known about this forever, but it's still kind of a shock to see the actual difference diagramed like this. 

In the center, you can read the titles of the books. The handle and middle lock of the guitar case are nicely rendered, but the nearer one is fuzzy, and the corner is practically cloudy.



A scheme for handling vignetting is to find a scene with a dark center and bright edges. Under the archway with the dining room window to the left and the well-lit mantle to the right, this seemed like that arrangement. However, my poor human brain could not get the fact that the whole side of the house was in the frame.



Exposing for the shadowed side of the backlit arrangement on the lanai seemed like it could fill the frame.



To fill the frame with a close-up, you have to get really close. There was barely room to get my finger between the camera and the squash to open the shutter.



From the island in the middle of State Street, The Oshkosh Northwestern looks like a toy temple on a broad plaza.



Converging verticals are going to be prominent if you tilt the camera up. A rising front didn't seem worthwhile with this device.




The shadowed entrance with the better lit front windows seemed like the right kind of target. Another super wide feature is that any little deviation from perfectly parallel to your subject is going to result in exaggerated converging perspective.



I've never noticed these architects' credits on the First National Bank building. This is one of the cropped images, but only to level that window sill. Any deviation from level is also exacerbated by the wide angle, and I can't abide a crooked composition.




The patio at Beckets.' The last bit of fuzzy roofline at the upper left and the one on the right are parallel!




The white lanai barely makes an impression at the edges, but there's just enough detail to define the planes.




That patient and willing model sitting in for the comically wide-angle portrait. Really makes my already comically large spectacles look big. I should have gotten closer for the funhouse look. The camera was at least 10cm from my nose. That tiny sunbeam saves the left side of the frame from the oblivion of my shadow.



The 15mm front for the Variable Cuboid has a .18mm hand-drilled pinhole. The film was Ilford HP5 semistand developed in Rodinal 1:100.

Thursday, October 2, 2025

And yet it continues...

All summer, the EyePA 30 and a photograph done with it has been in an exhibit in Wausau, which was awarded an honorable mention. So it didn't get a swelled head, I put it on construction duty as soon as it got home, loaded with humble Lomo 100.

It's been almost a month since my last post about the reconstruction of Central Street, and they're still at it.



Somehow finding room amid the pipes they've already buried, they began with the big corrugated pipes for the storm sewers.



More laterals, this time for sewer. Very surreal to watch one of these things on your front lawn coming toward your house.




The view from upstairs.  The wide angle disguises the scale a bit, but you can gauge it from the worker in the yellow vest.




On the other hand, I haven't mowed the lawn since mid-July.



They removed any remaining sections of sidewalk and used a giant chainsaw to dig a trench to bury smaller pipes where the sidewalk had been.



The inadequate storm sewers. They get these out by whacking the connections repeatedly with the excavator bucket. After they pick them out of the trench, they don't set them down gently; they just drop them from about two meters up.



This compaction roller vibrates the whole house when it goes up and down the street. When it's right in front, the windows rattle.




A few tons of water for something.



The lone and level gravel stretches far away.


Next, paving.

The EyePA has two .23mm hand-drilled pinholes, on the axis and 11mm above it, 30mm from a 6x6cm frame. The Lomo 100 was developed in a Cinestill Quart Powder C41 kit.

Saturday, September 20, 2025

Oh, you mean the short of it with the Variable Cuboid

I didn't mean to be deceptive in my last post by describing 35mm as the short of the Variable Cuboid. Among commercial sellers of 6x6cm pinhole cameras, that is considered far from the pinhole, and there is an even shorter option for the Variable Cuboid - 20mm. At 113 degrees, 30 degrees wider than the 35mm. It's just a hair wider than all those cameras available for purchase. Let's see what that looks like.

Three of my pieces from the No Kings event were in a group show, Main Street, at The Art Garage in Green Bay. I went to the opening. Still cool to see one of my cameras on a sculpture stand.


Hors d'oeuvres and one of those "You'll be a blur but your friends will recognize you" conversations.



Even in the bright front gallery, exposures were long enough to make it a challenge to capture the sparse crowd. The Director and I are the mists on the lower right, having a conversation about seeing how time is recorded in long exposures is one of the attractions of pinhole.


I have to give Dave Heim credit for pointing out this sunbeam in the back.



We didn't use anything from the compost barrel this year, but nonetheless got this extremely vigorous volunteer vine growing halfway across the lot. When I was looking at this, I thought the shadow of the tripod was almost completely blended with the vines, but it almost looks in the way in the picture.



Is it a ghost pumpkin? This one's about the size of an apple, but there's a few weeks of season left.



The new hospital by the river is nearing completion, including an accessible switchback leading down to the riverwalk. In case you were wondering, the exterior is all grey.



The Multicultural Education Center, one of three grand old houses on campus, has been renovated and renamed after an extremely accomplished alum who credits it with part of his success. It still houses multicultural student organizations, but there's no longer a big sign on busy Algoma Boulevard that people who fear loss of privilege get worked up about.



Backing the '99 Mustang out of the left-hand bay of our garage requires a precise turn to avoid the plantings at the corner of the porch. I thought the front was clear and was concentrating on the back. When I felt a bump, I thought something was under the car. Probably weakened by years of close calls, I had torn off the front bumper cover against the door frame. After some disassembly, I discovered the cover was fine, but a few things underneath that it attaches to had to be replaced. Of course, there were several videos on YouTube. The parts were easy to find and pretty cheap.



Nothing more complicated than a socket wrench and a screwdriver was required. Looks just like a 25-year-old car again.



Photo Opp put out a general call for labor one day. Based on my experience in libraries, I was tasked with rearranging the bookcases, which had been emptied for some construction on the wall. If I lived nearby, I would spend a lot of time looking through these. It's a really terrific collection.



In a related Mustang incident, I found a pair of clip-on sunglasses under the seat that I lost at least fifteen years ago. Along with my new little Orange 20RT amp, it's given me ideas about a YouTube character.



Confiteor



There are two confessions I must make. 

This was supposed to be a demonstration of the super-ultra-wide-angle view of the 20mm distance from a 6x6cm frame. Most of them are cropped.

113 degrees is really wide-angle and it's hard to be sure you're previsualizing what's actually in the frame. Often, I would concentrate on one side of the frame, usually the bottom, and let the other side fall where it may, which turned out to make an off-balance composition. Even the most tightly cropped is still wider than the 35mm front. Can you tell which ones are cropped?

The other issue is that every frame included three areas where something blocked the pinhole. (n.b. A light leak would be darker than the rest of the negative.)  The cropping managed a good bit of this, but I have somewhat clumsily retouched these, mostly with the clone tool. Did you notice? I tried to use the Content Aware Fill feature in Photoshop, and it was rubbish. 

By the way, this is a pretty dense negative, but I also darkened this image to enhance the flaws.

Although the pinhole looks like it is well clear of the tape, the shallow depth of field of the microscope reveals significant topography in the tape after years of existence. The angle of view is wide enough that a few edges and fibers of the tape impinged on the image.


The 20mm front of the Variable Cuboid has a hand-drilled .23mm pinhole. The film was Ilford HP5 semistand developed in Rodinal 1:100.




Thursday, September 11, 2025

The short and long of it with the Variable Cuboid

Another roll of the XPired XP2, this time in the Variable Cuboid, which I hadn't used for a while. Starting out with the 35mm front, I set out for Menomonee Park. 

I think I've photographed this couple before, but they were both in the same hammock. With the wide-angle camera, I was pretty close and asked for permission to photograph them. 

"Go for it."




One of the cabbages looks like it might provide something for us to eat in addition to feeding the caterpillars.

 

Doesn't "A Sunbeam on My Telecaster" sound like a great surf song title?
 



Several years ago, I started photographing the bridge tenders' houses on the drawbridges over the Fox River.  After all the bridges in Oshkosh, and a few I just happened on during Photowalks, I made an effort to get all of them. The last one to finish the set was the Mason Street Bridge in Green Bay, on a four-lane, limited-access road. The day I did the other Green Bay bridges, it was cold and raining. It would require walking about a kilometer to get near it with a wide-angle, or by using a narrow-angle of view from under the bridge, which would require a half-hour exposure. I decided to come back some other time for Mason Street. I was going up there to drop off some photographs for a gallery show recently on a brighter day, so I put the 200mm front on and did it from the shore.



There was originally a smaller-than-the-equations-specify, .50mm, hand-drilled pinhole on the 200mm. When some perfectly sized, .60mm Gilder electron apertures turned up from a long-ago purchase, I changed it. Much to my surprise, I found that I liked the old pinhole much better, which I misplaced as soon as it came out. I drilled a new half-millimeter hole. Might as well spend the rest of the roll to check it out. A sunbeam fell in the living room, with the camera all the way across the room.



The only mature oak in the line of trees along the shore of Millers Bay.



Filling the frame with a large shiny hopper on top of a factory.



Shiny titles in the darkest corner of the living room at f333 for an hour,




These definitely seem better than the larger Gilder aperture, but I'm not sure if they're as good as the original. I still have more XPired XP2 to experiment with. It might be interesting to try a smaller pinhole to see if a tinier spot of light wins over optimal diffraction, even at the expense of a higher f ratio. It's the Variable Cuboid, so it's not really any trouble to switch pinholes mid-roll.

The Variable Cuboid uses a 6x6cm frame. The 35mm front has a .23mm hand-drilled pinhole on a continuously adjustable rising front with 14mm of travel above the axis. The 200mm front has a hand-drilled .50mm pinhole. The XP2 was semistand developed in Rodinal 1:100.

Wednesday, September 3, 2025

This is getting personal

After digging a trench, burying the water pipes, and refilling it the entire length of the block on our side of the street, they began laying the new sewer pipes on the other side of the street.


After that, they began installing innocent-sounding laterals, the pipes that run to the private plumbing systems of each house. That requires removing a good bit of your front yard.


All summer, they have been painting things on the sidewalks and putting flags on the lawn to indicate where to dig and where not to. Wye is simply a spelling out of the letter Y, indicating a pipe that branches off a main line.


The before picture. We were hoping these indicated the limits of the trench.



We were wrong; the whole front sidewalk, which we finally had leveled two years ago, came out.



A trench box in our yard. They were nonchalant about me being out there with a pinhole camera and agreed this was the best angle.




They knew where the main internet fiber line was, but not how it branched to individual houses. Fiber optics don't do well when confronted with a backhoe. They came and fixed it right away. Now, our path to the internet lies on the surface with the junction box about a foot from the torn-up street. 



An unusual three-box tower.




The current state of Central Street. Half meter diameter pipes started showing up in everyone's yard. Hard to believe they still have room.



Wyes of some sort?



Also scattered about are giant concrete castings with holes conspicuously the same size as those big pipes.


It's been pretty noisy this week.

The Crackon has two hand-drilled .27mm pinholes, on the axis and 11mm above it, 45mm from a 6x6cm frame. The film is my last roll of vintage Fuji NS160. I finally broke down and mixed a new C41 kit.