In the old days when I wanted to take pictures of distant objects, like landscapes, with my 35mm OM-2 I would just move the focus all the end: infinity. Now, however, my lenses focus past infinity. How can you focus past infinity? I don't get that. Not only is it really inconvenient, but I would think scientifically impossible. What's going on with this?


1 Answer 1


In the old days all our lenses had an "infinity stop". Nowadays, many lenses allow a setting that is beyond infinity. This gives the lens greater flexibility to be fitted on different cameras with different adapters. In other words, on some setups, the distance from the rear glass lens element to sensitive surface (back-focus) might be different. We are talking about differences of the distance between mounting flange and sensitive surface for different camera brands.

  • \$\begingroup\$ Are you able to provide any evidence at all to support this statement? Certainly none of the first party manufacturers have an interest in making their lenses useable on different brands. \$\endgroup\$
    – Philip Kendall
    Commented Aug 17, 2022 at 15:15
  • \$\begingroup\$ @ Philip Kendall - No evidence whatsoever - just looking at other posts that complain that the lens they bought does not have an infinity stop. I have been wrong more that 1000 times this probably is 1001. \$\endgroup\$ Commented Aug 17, 2022 at 16:20

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