I've been working on this all year, a good lockdown activity. 5x7 made from Huon Pine, a native of Tasmania. Prized for boat building (it resists rotting) and fine furniture making. I considered traditional materials like walnut, cherry teak etc but could see no reason not to use Huon Pine. It's turned out strong and light (2.2kg all up) and has respectable movements. I just got it all assembled yesterday and have only the ground glass screen to grind and zero marks for the movements to add.
The movements are: Front, 50mm rise/fall, 40mm L/R shift, swing and tilt as per bellows; Rear, 30 degrees backward tilt, forward tilt as per bellows, 12 degrees L/R swing. The extension will go out to 530mm but due to the thickness of the bellows material I can only get to 400. This is Ok because I rarely use more than 2x normal focal length. I think I should also be able to use a 90 degree wide angle without a recessed board, which will be handy as I plan a 4x5 adapter.
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