Good explanation, thank you for the video.

great information wow!!!1 lovely video thanks

One of the most informative and well-presented videos on YT. While I knew this information already, it was still a great pleasure to watch due to your style. Cheers!

Correct information, straight to the point. Good video

A great lesson, and by such a dashing fellow.  Great video, thank you.

Very informative! Thank you for the insights!

Fantastic wristwatches ⌚

Nice summary. Thanks.

Thank you for a concise and very informative video.

I was wondering what those white spots were...Thankyou...most helpful.

I have a  Schneider 150mm/5.6 Symmar-S MC that exhibits "Schneideritis" and it's a fantastic lens.  No issue at all.  It's purely cosmetic, because it's not in the imaging path.  If you see any spots, haze, or fingerlike growths inside the lens IN the imaging path, steer clear!

Jonathan, very nice video, succinct, informative, and thoughtful. Thank you. Have you done any videos comparing lenses--say symmar-s against sironar or nikkor against fujinon? Not just in general sharpness but also color cast on fujichrome or ektachrome film as well as chromatic aberration especially when tilting or swinging the front standard and objective? Thanks again.

Hello Jonathan
       I've been shooting medium format with my Hasselblad 500-C, 500-CM and Zeiss Super Iconra B folder, all of which are 6x6 format.. I'm in the process of building my own 4x5 field camera. I've picked up a some miscellaneous parts from Japan, i.e. Toyo 45S front standard and rotating ground glass back from Toyo's original 1958 manufacturing stock. Detailed presentation on the large format lense assembly. After dealing with the C-Series Carl Zeiss Hasselblad lenses with their integrated shutters. It would appear if you find a properly functioning shutter. I'm leaning toward the copal shutters, the large format lenses are somewhat simpler than the Carl Zeiss lenses for the Hasselblad. At any rate I appreciate the info you've included in your video, and will keep track of some of your other vids as time passes. Keep up the hard work, excellent presentation.
Regards
Sonny USA

I have two lenses with "schneideritis", neither of which is a Schneider. One is a Fujinon  W 1:5.6/180 4x5 lens that has those white "spots". The other one is a Soviet Mir 26B 3.5/45 medium format one that has a white "streak" around the perimeter of the lens. Can't see any effect on the optical performance on either.

Brilliant video, thank you so much for the useful information!
I was wondering if you have a video where you outline vendors/shops where one might be able to find large format lenses within EU/UK? I recently got myself a cambo actus system, and I an dying to get a ultrawide lens (wider than 100mm) for it. However, I find it quite difficult to find reputable sellers.

Hello, I came across your channel. I’m going to build my own 4x5 camera and I was looking at the different lens options. I found a 105mm (Carl Zeiss Zena f/4.5), an 135mm (Schneider Symmar f/5.6, and an 150mm lens (Fujinar-W f/6.3). If you can give a recommendation it would be greatly appreciated

What would be a good first general purpose lens for 4x5? Thanks in advance. Great video here.

Hi Jonathan,do you know why the lens is not centred in the panel. It’s the same on Wista panels with the mounting hole below centre. It can be a problem if I want to use rising front. Thanks Ed

Is metering with large format the same as metering with 35mm format?

What lens fits or is for a Century 8X10 camera?