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If it consistently focus at the back of your focus point, probably the ground glass is reversed: the frosted part is probably facing you instead of...

It will be great

If it really won't budge then it can always be cut off using a very small cutter in a mini-drill (Dremel or similar) but obviously the retaining ring...

It's missing from the conventional list of aberrations? That itself might be an aberration.

Still waiting.

Why isn't diffraction considered an optical aberration? It's missing from the conventional list of aberrations. Late night pondering... ...

Caveat emptor: I may not have toned this print after all. I have been using that toner consistently on kallitypes for a couple of years - gradually...

If you really want to get this out of your system, I have applied modern tech to help evaluate what your lenses are doing... I now use my large...

Michael, I am basically at the same stage as you, but lucky enough (now that I'm a happy retiree) to have the budget and time for the learning...

Agreed. Just another tool -- use wisely.

And has that helped remedy the problem?

Goes back to what the image-maker's print goals are.. IMO group f64 held a significant influence on many LF image creators. This was the...

Good assessment, Adam. But to the above options, you could also add that diffraction is just another potential tool, to either employ or set aside...

same here, i kept the tent and got a half refund. Mine had light leaks in the same place you are talking, i taped the pinholes and cover the whole...

I'm not the original poster but I did buy one of these for ulf and it came w pinholes through the top stitching, brand new out of the box. The...

I was thinking about why 400-800 ISO might work. Given a developer that works >6x faster than normal and while also developing to completion, I...

Hi all, Good thread...thank you. So, I've re-read the thread and here's what I was able to get out of it.... - There are rules of thumb to...

tgtaylor, thanks for the example. It looks just slightly purple to me. Jim, how do you apply the small volume of toner to your prints? Flat...

Juniper on Schonchin Butte, Lava Beds National Monument, a number of years ago. Likely burned up in the Caldwell fire this summer. I'd go up to...

Kayaked there last June and all was good. Did it the year before, in June as well, and while we were there a small RV went in the river. They got...

Pull off the front and rear lens groups, open the aperture wide open, lock the shutter open. If it's really just paint, you could apply a gel paint...

Good advice on all counts. I was beating on a center punch with a 20 oz ball peen hammer the other day. The punch went boing, still haven't found it,...

From my own practical needs, I try not to go smaller than f/32 for 4x5 format, or smaller than f/64 with 8X10 film (or smaller than f/45 if a large...