Recent content by zilch0md

http://northcoastphoto.com/ I've always been pleased with these guys - sending them 120 Provia 100F for several years, now.

For measuring Near distances prior to calculating DoF - and for finding a target on which to focus that resides at twice the Near the distance: Bosch GLM 35 Laser Measure $48 (unprecedented) https://www.amazon.com/Bosch-GLM-35-Measure-120-Feet/dp/B00VI7WBWE Look at the price history...

Wow! You're going for it - 8 lp/mm in 32x40 prints. At 4x enlargement, I think this is achievable - securing 32 lp/mm on-film, but you might find some of your lenses are not up to the task, depending on how close the corners come to the edge of your image circle. Here's hoping you have...

^. Best laugh I've had all day. :-) Thanks!

If I had a magic wand, everyone would wake up tomorrow morning with one of these on their beside table: A backlit stereo viewer equipped with achromatic lenses, that allows one to view a matched stereographic pair of medium format chromes at 4.3x magnification, shot with two Mamiya 7ii bodies...

Hi Jarin, Going by the CoC formula in the Wikipedia article, one should input the anticipated viewing distance and enlargement factor, in addition to your personally desired print resolution, specified in lp/mm (line pairs per millimeter). Reading the post I've quoted, above, it looks as if...

You're welcome, David! The formula for determining the CoC that should be used for DoF calculations reveals only two variables affecting how small that circle of confusion must be at the film plane: enlargement factor and your personal preference for final print resolution (which, should...

Here comes the can of worms. That was a pretty harsh, yet unqualified condemnation of hyperfocal focusing. I can only assume you've not learned how to control it, perhaps by choice, but that's perfectly OK. Whatever your methods, they are apparently working very well for you. Your disappointment...

Hey one90guy, It's always nice to hear someone who is content with their focus and aperture selection method. It means you have a good grasp on the fundamentals and you are achieving some measure of consistency at meeting your own requirements for print resolution. Congratulations! You're a...

Harold Merklinger's book, The INs-and-Outs-of-Focus, makes a case for the convenience of focusing at Infinity, rather than using hyperfocal methods, but even though he admits that the resolution of Near subjects will be compromised when focusing at Infinity, that's often overlooked by fans who...

I've been using Mamiya 7ii bodies for over 15 years. My approach would be too obsessive for some applications, where the need for speed is critical, but here's how I manage aperture and focus distance, ameliorating degradation caused by both defocus and diffraction, to secure a specific final...

The only examples of which I'm aware are the Plaubel Makina 67, W67, and 670 (German bodies, Japanese lenses.)

What a clever way to collect a niche mailing list! I'll submit my vote here: Mamiya 7ii Thanks!

You might find this useful: Dead Link Removed Mike

I thought he was shopping for a 220V AC voltage regulator.