35mm Lens Database back on-line (finally!)

Discussion in '35mm Cameras' started by Dr. Joel M. Hoffman, Nov 10, 2004.

  1. We used to have a wonderful resource for evaluating 35mm lenses ---
    the on-line user-supported 35mm lens database at
    http://www.exc.com/Photography . The good news is (1) it is back
    on-line:

    http://www.exc.com/Photography

    or more directly:

    http://www.exc.com/Phorography/Lenses.cgi

    and (2) it will soon include a digital camera database.

    The bad news is that the old lens database was wiped out. User reports
    about lenses are often much more valuable than published specs. So if
    you have time to enter information about lenses you own, now's the
    time!


    Thanks.

    -Joel
     
    Dr. Joel M. Hoffman, Nov 10, 2004
    #1
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  2. Dr. Joel M. Hoffman

    Alan Browne Guest

    Dr. Joel M. Hoffman wrote:

    ....happily, there is a database at photozone that is full of lenses and user
    evaluations. www.photozone.de . It also has a report on ratings given by
    photography magazines and similar sources where the results are averaged for
    each lens.

    .... www.photodo.com has measured sharpness and distortion data, but the graph
    links are all screwed up and have not been repaired. You simply get the link to
    the graphs and replace the IP with 'www.photodo.com' and then you can get the
    graphs.

    Cheers,
    Alan
     
    Alan Browne, Nov 10, 2004
    #2
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  3. Dr. Joel M. Hoffman, Nov 10, 2004
    #3
  4. ...happily, there is a database at photozone that is full of lenses and user
    It looks great. Unfortunately, that database doesn't seem to have a
    place for comments, which can be particularly useful, both in
    evaluating a lens an in evaluating the person submitting the report.
    Nor can one look at individual results. (Surprisingly, the DB also
    doesn't have Olympus lenses. Http://exc.com/Photography has --- well,
    used to have, and hopefully will have again --- Olympus and a wide
    variety of other manufacturers.) Having cumulatie results and
    individual responses was a nice treat that, hopefully, we'll have
    again.


    -Joel
     
    Dr. Joel M. Hoffman, Nov 10, 2004
    #4
  5. The worst thing about Photodo is that it seems not to have been
    updated in the last four years, as far as I can tell. I think the
    broken links are a byproduct of that; they are numerical addresses,
    and I think the numerical address has changed without anyone updating
    the links. Using a single number to rate a lens is, of course, a bit
    silly, but the MTF charts were useful, especially as they were
    measured at Hasselblad, as I recall.
     
    Stephen H. Westin, Nov 10, 2004
    #5
  6. Dr. Joel M. Hoffman

    Eric Miller Guest

    Eric Miller, Nov 10, 2004
    #6
  7. Dr. Joel M. Hoffman

    TP Guest


    Ah yes, www.photographyBEWARE.com.

    I have grave doubts whether more then a small percentage of the
    "reviewers" at that site have ever *seen* the equipments they are
    "reviewing", let alone used them. There are so many examples of
    "users" hyping products they clearly don't know anything about that
    the whole site is worse than useless.
     
    TP, Nov 10, 2004
    #7
  8. Dr. Joel M. Hoffman

    DALLAS Guest

    So why do you let it bother you, your Highness?
     
    DALLAS, Nov 11, 2004
    #8
  9. More good news about the 35mm-lens database
    (http://www.exc.com/Photography ): Some of the old reports have been
    restored. While I don't have the database from the old server, I do
    have an old backup from before the old server, when I used to house
    the server myself. And I've put those reports back on-line. Once
    again, I'll be grateful if you can take a moment or two to help
    repopulate this database.

    -Joel
     
    Dr. Joel M. Hoffman, Nov 11, 2004
    #9
  10. Dr. Joel M. Hoffman

    Bill Tuthill Guest

    From my limited experience (just Minolta and Nikon systems, mostly)
    Photozone's Lens Comparisons, from magazine tests, seem very reliable.
    http://photozone.de/2Equipment/easytxt.htm
    It was fixed recently, at least for me...
     
    Bill Tuthill, Nov 11, 2004
    #10
  11. Dr. Joel M. Hoffman

    Alan Browne Guest

    Nope. Most of the MTF charts are still hard coded with an IP address that
    didn't follow the new location of the other pages. I always (including after a
    refresh) get a broken link symbol for the graph. I copy out the link, paste it
    in the URL bar of a new windo, fix the link and then I get the graph. Decidedly
    tedious when looking at several lenses...

    I've written numerous times to the numerous alleged e-mails of the page owners
    with no reply or effect.

    Cheers,
    Alan
     
    Alan Browne, Nov 11, 2004
    #11
  12. More good news about the 35mm-lens database
    Someone just pointed out a bug in the database, wherein the results
    page, displayed from:

    http://www.exc.com/Photography/Lenses.cgi

    only printed every other result. So if you've searched the database
    recently, when you go back you'll find twice as many lenses
    displayed. (The digitial camera database at

    http://www.exc.com/Photography/digicams.cgi

    suffered from the same flaw, but there aren't really enough reports
    there yet to make that database all that useful.)

    Enjoy.

    -Joel
     
    Dr. Joel M. Hoffman, Dec 16, 2004
    #12
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