Friday, June 26, 2026

Shredded Wheat at Photo Midwest

At the beginning of June, I conducted a camera-making workshop at Photo Midwest in Madison. As usual, I built a camera along with the participants, out of an economy-sized box of shredded wheat cereal. The oversized circular bowl would make the camera look really wide-angle. Someone was coming to show me the scanning system, so I couldn't go out to take photographs. For the camera photograph above, instead of using AI, I just photographed it in front of my TV displaying Apple Maps Look Around view of their building. Not even any regular digital trickery. Did ya notice?

The camera sat around for a week while I pursued another project. It even went on an inspirationless bike ride. The only thing around the house that got my attention was the short-side lighting on the Pumpkin Queen's regal expression.



A Photo Opp photo walk in Neenah came to my rescue. 

This bright yellow Deuce Coupe had gotten my attention as I parked its distant descendant.



The featured performer of the evening was the atmosphere, with a continual parade of dramatic clouds over The Fox, with the occasional sunbeam highlighting the Neenah Paper Mill. Since 1874, a paper mill has been on this island between the lock channel and the river, with a few power channels running through it.



Despite their dramatic dark appearance, the clouds were much brighter than the landscape, which really pushed the latitude of the film. Having all the dynamic range in the world makes a different picture.



A stairway up to an observation platform.



These three monumental office buildings dominate downtown Neenah. With only a very wide-angle camera without a rising front to control converging verticals, the buildings and I just leaned into it.



The to-be-expected double exposure. The first was of the historic backs of the storefronts on Wisconsin Ave. while Fox Valley Photo comrade Tim Matey was shouting from the top of the eight-story parking structure behind me: "It's out of focus!" Trying to come up with a clever retort, I forgot to wind the film. After climbing the stairs for the view of the weather over The Fox as it spreads into Little Lake Butte de Mort, I discovered (duh) that it was surrounded by an eight-foot chain link fence! There was a gap, but it was in front of a large semicircular drain structure. Another photo walker helped me hold the tripod to the wall as I extended it outside the fence as far as I could reach to operate the shutter. Looks like the Mother Ship about to land in Wisconsin. And without any AI - or I of any kind, either in the sense of the pronoun or the abbreviation.



Another view was available as the fence went down along the ramp to the next level. It never rained, but it looks like the east side of Menasha got a little.



Oh look, an odd little rectangular structure with a funny hat at the top of the stairwell!



Seduced by those window-striped buildings again. Would you have noticed it was also a double exposure if I didn't bring it up?




Back in the park, looking east from the observation deck, the rain well over Lake Winnebago by now. 



I'm a sucker for a neoclassical portico with a semicircular roof, especially raked by the setting sun under the storm clouds. One of the staff was next to me while I took the photograph. He asked what the deal was with all the photographers. He never mentioned the cardboard box.


The Bowl of Shredded Wheats has an approximately .23mm pinhole (I always forget to record it in a workshop demonstration), .30mm from a 6x6cm frame. The film is Kentmere 400 semistand developed in Rodinal 1:100.

Friday, June 19, 2026

World Stereoscopy Day: Close Six-String Encounters in the Third Dimension

World Stereoscopy Day, founded by the Brian May Archive of Stereoscopy, occurs on June 21 each year, the anniversary of Sir Charles Wheatstone's presentation on Stereoscopy to the Royal Society in 1838. This is my fifth year participating.

The idea for this year's World Stereoscopy Day project developed in my brain last winter after I had my Ventura guitar renovated and took some gorgeous close-up pictures of it.  One of my previous efforts for Stereoscopy Day was inspired by the same guitars. Go figure. Interplanetary dust or hedgehogs would be a tough assignment for pinhole.


One of the critical parameters of stereo photography is the baseline between the optical centers of the images. Because it mimics the separation of human eyes, 60mm is the most commonly used. But for some things, like comets and extreme close-ups, you may have to use a longer or shorter baseline.

I have seen references in the past that the minimum distance that the brain will allow the merger is 30 times the baseline. This is probably about as reliable as much common wisdom on the internet. My experience suggests that you can get away with much closer subjects, particularly with wide-angle cameras, which are unheard of in lensed stereo photography, but are de rigeur in the pinhole community.

Using 6x6cm negatives, obviously you can't have a two-chamber camera with a less than 60mm baseline.

Using the Cha-Cha method, moving a single camera between images, you can make the baseline anything you want.  I've successfully done this both for macro and narrow-angle-distant applications. My close-up experience was with 24x36mm negatives, with a 10mm baseline and 100mm distance. From those guitar images that inspired this project, I knew that was about where I wanted to put the camera.

I chose The Little Mutant at moderate wide-angle 45mm, 68-degree angle of view, more to make it easier to control the background than for any stereo or pinhole convention.

In the previous experiments, I just used a ruler to slide a desktop tripod the right distance between exposures, but since have since gotten a K&J travel tripod which came with a measuring scale on the quick-release clamp. I can't think of any other use than stereoscopy for this to be there. Moving the camera precisely and winding the film was easy. Pro tip: Don't kick the tripod or subject between exposures.

There's a lot of discussion about the goal to be able to comfortably view a stereograph. These might take a little concentration, but once locked into 3D, I can hold them without strain. Remember you have to focus back and forth to look at near and far parts of the image.

There are three common ways to view stereographs. In line here, they will be set up for Crossed Eye Viewing, which needs no additional equipment. Crossing your eyes makes a double image. When you make the two inner images overlap in the middle, and focus on some element in the scene, it pops into three dimensions. Here's a link to an exercise that might help to learn this. 

Also displayed here are red/blue anaglyphs, which, of course, you need appropriate glasses for (see my profile picture). I'm really no expert at this, and in a few of these I wasn't able to get them aligned to eliminate ghosting, especially on the closest elements. I may have discovered the secret of that 1:30 distance ratio.

For Parallel Viewing or printing for a classic Holmes Stereo Viewer, click here for a PDF.


The inspiration for this all was my shiny, renovated, lawsuit-era Ventura clone of a relatively rare Gibson L6S. One improvement was to replace the chrome tuners that weren't working great with new black ones. I cut the Japanese character Kuro out of matte vinyl for a headstock ornament, which is just barely visible.




All the replacements for the original tuners, whether black or chrome, had economy somewhere in the description. Luthier Matt Hayes modified the head for some name-brand Kluson machines.






The chrome-covered pickups had a slightly dented surface that bothered me and didn't sound all that great. You can really tell where the cloners saved the money to sell inexpensive guitars. Those got replaced by Seymour Duncan Black Winter Blackened Matte Black humbuckers, which sound really cool. The neck was straightened and completely refretted. I've gotten up to that 20th fret with the dot jamming in Hortonville.





The tailpiece stop bar and Tune-o-Matic bridge are indistinguishable from their Gibson counterparts and remain as the legacy of the craftspeople at the Kaman Industries factory in Japan. I suppose they already had the machining done for the expensive guitars, so just used the same parts.








The original electronics remain in the guitar. It sounds great, but YouTube makes me think they may need an upgrade. With the six-way pickup selector, it's hard to tell what's supposed to be controlling things.





My original antifascist machine from the late sixties - another clone of a Gibson, this time of a Hummingbird, by Alvarez, another American brand made in a Japanese factory.






An authentic Warlock from the original American company - an NJ (Nagoya Japan) Series with its optional, distinctive Widow headstock. This one was made in a Korean factory, though.






Classically outfitted for metal dives with a locking Floyd Rose Bridge, although I never use the whammy bar.




A pick-holder mini-clone of a Marshall amplifier with my classic, made-in-California Fender Telecaster, and my latest favorite Fender product, the Mojo Grip. The recent controversy of Fender's venture into the lawsuit business against high-end strat-style makers reminds me of AT&T, when they realized that Bell Labs and market-leading network technologies weren't as profitable as paying legislators to prevent competition by public research universities. Fender made some legendary guitars under some of the brand's business plans.






The Little Mutant has two hand-drilled .27mm pinholes on the axis and 13mm above it, 45mm from a 6x6cm frame. The film is Kentmere 400 semistand developed in Rodinal 1:100.

Gloria in excelsis pinhole.

I've recently been involved in a few workshops and an interview where the question "Why pinhole?" was discussed. The answer always boils down to some version of "Can you believe these photographs were done with something I made with my bare hands on my kitchen table with tools and materials you can find around most homes? Just an empty box with a little hole in it? On film I developed at home?" It never gets old.

Thanks again to Rebecca, Denis and Brian for putting on the World Stereoscopy Day party.

Monday, May 25, 2026

Well-seasoned 20th-century film.



In negotiations with Photo Opp about compensation for conducting a workshop, I cleverly got them to agree to give me a sealed, five-roll box of 220 format Kodak Pro 400 MC, which I knew was in their freezer.

It had expired in November 2000. I've used quite a bit of outdated film, some another decade older than this. My general impression is that it's fine. It may be a little slower, maybe lower contrast, and might exhibit some color shift. You could correct those changes printing with the right filter pack (which would be expensive to experiment with). It's pretty simple with digital color editing tools.

Included in the box was an ad for Kodak's new series of professional color films, Portra. There was a table recommending which of the new films to replace the Pro 400 MC with - Portra 400 NC, which happens to be the film I previously had used last year in 220 format, which was discontinued in 2011 and wasn't even in the foil wrapper when I got it. 

The professional 220 format gives 24 6x6cm exposures, twice the normal 120 format. In order to squeeze that much film on the same reel, there is no opaque backing paper, so your camera has to be particularly light-tight. I had completely lined my Morton camera with old backing paper to accommodate that.

That also means no numbers to tell where you are. Those previous experiments led me to advance the take-up one and a quarter turns for the first 8 pictures, one and an eighth for 9-16, and a single turn for the last third, measured by a white dot on the winder.  (The circumference increases as you put more film on the take-up reel.) That worked great. The full 24 pictures and no overlap. I kept track in a little notebook.


I rated it at ISO 200, but I wasn't any more careful about timing the exposures than I usually am. 

The contrast mask on the negatives is a little darker than usual and almost purple rather than the orange base most color films exhibit. Is that the age of the film or a feature of professional color films? The scanner software didn't have any trouble bringing me close to the right color, although I'm not too worried about correct color as long as it's not too distracting. Most of the exposures done in daylight haven't had any color correction at all. Despite the need to pack all that film on the same reel, it's got a substantial film base and the negatives dried flat enough to get in the scanner without tape.




Trying to expose for the shadowed side in the morning, this blossoming crab got pretty overexposed. Like most fast films, it gets noticeably more grainy when it's overexposed.



Testing out the blues with just touch of green and gold.



Combining daylight and incandescent.



Looks like an Orange amp to me.



The Toad Witch surveys the dining room. Most of this was incandescent balanced LEDs and the film responded as warmly as you might expect for daylight film.



The white crabapple in the back.


The pink crabapple next to it.



Thorns and ribbons to keep them out of my hair.




Some shadows under the hydrangea.



Under the lilies of the valley.



The Wisconsin State Wildflower.



Abstraction with weeds, hay under netting and crumbling asphalt, in the front of the house.



A dazzling display by the lilacs.


New white equipment is a good test of the color balance.



The loveseat, enlightened by a sunbeam and literature.



Another very warm response to warm white LEDs.



Out to the lake again, overexposing another eastern sky in the morning.



The overexposed, less detailed background, blurred by the wind, gives a good impression of shallow depth of field.



Foreboding sky over Menomonee Drive.




Behind Oshkosh.




I've always thought this church was odd because of its almost square footprint with the entrance on the corner. I never realized it had the indentation on this side.



In one of my previous experiences testing whether a bunch of old film was worth using, I used flat, grey architectural elements to assess color accuracy. Have I mentioned recently that my camera has a square format?



As part of their "Community Oriented Policing" effort, the small storefront at 101 Algoma, just across from Opera Square, has been occupied by the Oshkosh Police. I thought about doing a picture if no one was there, but when I saw this K9 officer surveilling the area, I went ahead and took my chance. The two human officers never looked up from their computers.



In the only other time I got 24 exposures from a roll of 220 film, the last frame was severely cropped by the end of the roll. I didn't want to put any effort into that last picture, so I decided to make it easy and document my Wisconsin bona fides wearing shorts and sandals in 65-degree F temperatures. 


Looks like I can use the other four rolls without concern, and there's another box back at Photo Opp.

Morton has two hand-drilled .25mm pinholes, on the axis and 11mm above it, 30mm from a 6x6cm frame. The film was developed in a Cinestill powder C-41 kit. Paterson adjustable-width reels are designed to take 36-exposure 35mm rolls, so there's no problem getting the long roll loaded.