I have trouble seeing grain on roll-film enlarged at 4x (8x10), even with a grain magnifier. With 4x5 at 2x I just don't have the vision. I usually go by edges in the image.
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I have trouble seeing grain on roll-film enlarged at 4x (8x10), even with a grain magnifier. With 4x5 at 2x I just don't have the vision. I usually go by edges in the image.
I found my big drying screens and a lot of blackout fabric via Craigslist. Around here you can find bug screens to insert in sash windows in hardware stores. The nylon mesh ones will do as drying...
Software at this level is probably without cost. Design can be done with FreeCAD or LibreCAD (open source) for traditional Computer Aided Design methods. OpenSCAD is a programmatic tool, and is also...
The Forum software does not like the link.
There will be differences between a purpose designed arrangement and a retro-fit (which is the only case I have considered, not having a camera with a...
Sort of. The tilt on the camera frame screws though a hollow cylinder (un-threaded interior), so the bolt binds the frame to the cylinder.
The cylinder (with anti-twist lugs) passes through the...
I started with 4x5, but there is a little overlap in the lenses with the 8x10. The 210 is used for 4x10/5x8 using a mask, the 270 G-Claron works with rear movements only. The 450mm Nikon is 8x10...
Yes, you need to use paper drums with the internal ribs and the cup light trap to do 8x10, so strictly it would be a 28xx series. I use one of these for my 8x10 work as it works with my CPE2+.
If...
If you are not using pouches on both sides, you can use the loops to strap on a tripod. It just about works with my CF tripod, but probably would not work for
a heavy or tall unit. It is handy to...
Well, 4x5 plastic holders weigh about 200g each, and the 8x10 equivalents around 620g. I presume a 10x20 holder is heavier. After the camera, tripod, lens exposure meter and a bag to carry it, film...
I see, two lengths. I thought the second set were for when you forget to remove the spikes from the tripod legs!
I load my images into GIMP, which asks me what I want to do about meta data rotation information at the loading stage. I'm mostly just doing some crops, resize, and maybe some minor tweaks, so this...
I like the idea of making mounting jigs - easy enough to define a block and subtract the volume of the piece in software. One thing I do with larger objects is print a slice or portion of the whole...
Spring strips like this are made to form a radio frequency shield for slide-in electronic items. I have yet to find a design that is the right size and cost, though I think some people have had...
Thanks for posting the part files. I hadn't thought to make a finger spring rather than buy one, but for just a few it probably makes sense. I like bookbinding tape for the flap hinge, but anything...
Looks well thought out, and very well executed. Are the screws self-tapping, or using heat set sockets? Are the white inserts printed, or tape?
I'd be a bit cautious about 3D printing the dark...
Beseler diffusion heads are run with the upper bellows collapsed to get the light surface as close to the negative as possible. Swapping the internal diffusion box in heads like the 45s can optimize...
There's a time capsule. The lad's shorts are shorter, and the lass's skirts are longer!
There is a parameterized OpenSCAD implementation of a sheet reel by John Clark on Thingiverse.com https://www.thingiverse.com/thing:3826578 I have a version I am testing that I scaled down from the...
Thinking a bit more about this: Scale from backsmithing is mostly iron oxides, as I remember. I suspect it will just rust and clump at some point and not get any finer. True iron powders are usually...
How fine, and what sort of weight? Unless the exact chemistry is an issue, you probably want tungsten carbide grinding elements (cost and hardness). Getting down to < 100 microns is going to be more...
This only happens with the 2509n reel? Not the B's insert? Do you load the film with the notches first? How many sheets at the same time, and does it affect them all?
Looking at my 2509n reel, I...
And you do load with the emulsion side towards the core?
Since this is 'minimal' agitation you are manually inverting a full tank?
Interesting shape space. Is it is an attic?
Just what I'd like to see on a foggy night!
Once I have used up my Bergger stock, I will probably go back to HP5 in 8x10, as I tend to use Delta 100 and HP5 in 4x5 and may as well have a common emulsion. I do not expect to buy more 8x10 for a...
When I needed some small English (BA) thread screws for my M.P.P. I found a model railway supplier in the UK. However, I did know what I was looking for - and still had to hunt around for the right...
A picture-rich environment! The two people taking photographs in the background during your 'speed' section was amusing.
You can get the approximate full weight by measuring the internal dimensions and applying the weight of water for whatever unit of volume you choose.
I'm a little less skeptical of the overall...
Definitely worth trying. The video rate will probably put a hard limit of focal plane slit measurements, but should be reasonable for leaf shutters at slower speeds. Easily archived for comparing...
I have been using SUNLU's PLA+ filament a lot lately. It is a little stronger than regular PLA and has a higher glass temperature. PETG tends to be finicky for me - I just don't have it dialed in...
TIFF is a strange beast. It is actually a framework for holding one or more versions of the same image in different formats. This was really useful in early desktop publishing where a raster image...
I have to admit that I painted my Graflok-compatible back for my Wista to match the colour of the wood rather than leave it original black. It will probably wear off, but I felt I had to make the...
You have to be careful of two things with 3D printed boards - the flexibility and the density of the plastic. Density should be OK with black layers of 0.6mm+ top/sides/base of the print. Flexibility...
Weigh onto slick surface paper, not the top pan of the balance. Most balances have a tare function to zero off the paper which saves doing arithmetic during weighing. I have a few proper spatulas for...
Those are really well defined and dense. Any physical damage to the emulsion? Since they are dark on the positive, they should be clear on the negative, which suggests the film was obscured during...
The main thing I've found over several darkroom setups is to remember where you will be standing, and make sure you are not trying to work in your own shadow. Diffuse light helps a lot in that...
Transparency helps a lot, as do specular highlights. Water in a thin layer over a rock often looks wetter than a deep pool for this reason. Multiple exposures at a faster shutter speed often look...
Mark up the floor with masking tape for the sink/enlarger/furniture. Maybe put some boxes down to make sure you walk around the tape marks. Then mime your process cycle and getting to various things....
The Standard has front and rear swing, and does not weigh much, so turning it on its side to get rear tilt isn't as bad as it could be. I'd like to see a friction wheel or something on the rear...
The cut outs are needed to get your fingers under the film to ease it out. The Fidelity ones have them under the flaps.
Zebra wet plates v2 put in a finger notch to get the plates out. The seem to...