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Vintage Lens Coverage Graphic

When you’re shopping for a large format lens one of the first things you want to know is what the coverage is. Will it cover the format I’m working with and by how much? Having salvaged the Schneider Kreuznach Vintage Lens Data I found myself with a piece of A4 paper and a compass trying to work out whether a particular lens will allow for movements on 4×5 or stretch to 5×7 etc. Getting frustrated I wrote the rough and ready Javascript+SVG application below to do this job automatically. Simply pick a lens from one of the drop downs and it will draw the image circle for you. Don’t go spending money on the basis of this application alone. Check out the spec sheets and do some tests if you are serious. Your lens coverage may vary!

11×14 8×10 5×7 4×5
By lens:
By coverage:

2 Comments

  1. Sam Kelly Sam Kelly

    Thank you very much. This is really useful!

  2. Kevin Parratt Kevin Parratt

    Dear Roger,
    Like you, I have been searching and searching for that incredibly useful historical lens data. For the company to have deleted it I can I only describe as mindless, or maybe even spiteful vandalism. It is certainly without respect for the generations of customers who have purchased their large format and enlarger lenses.
    That said, I am very grateful for the work you have put into this page.
    Thank you
    Kevin

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