wide angle conversion lenses for DSLRs

Discussion in 'Digital SLR' started by Paul Furman, Mar 7, 2010.

  1. Paul Furman

    Paul Furman Guest

    http://www.komamura.co.jp/e/CVL/index.html
    There are some articles announcing this upcoming line of Horseman wide
    angle and macro conversion lenses for DSLRs from fall 2009 but I don't
    see where they can be bought. Horseman is known for making some rather
    fancy large format gear, so one would expect these lenses are not total
    crap although the $60-$120 price doesn't suggest the flawless imaging
    they describe. These are for screwing on the front of a kit lens.
     
    Paul Furman, Mar 7, 2010
    #1
    1. Advertisements

  2. Paul Furman

    Peter Guest



    The picture of the .25 superwide macro reminds me of the old Spiratone lens
    that had the same fisheye effect. I think if I dug deeply into my old photo
    pile I might find one that fit a series VII converter.
     
    Peter, Mar 7, 2010
    #2
    1. Advertisements

  3. Paul Furman

    Paul Furman Guest

    What sort of Spiratone lens? I have a couple of their bellows lenses,
    which are fairly crappy, the 35mm is a complete joke, the 150mm is not
    bad but an easy one to make.

    Horseman also makes a 35mm tilt shift bellows which is awfully darn
    expensive but not all that useful.
     
    Paul Furman, Mar 7, 2010
    #3
  4. Paul Furman

    SMS Guest

    They might be fun to play with, but I expect that they won't be any
    better than the highest-quality conversion lenses for P&S cameras, which
    as you know, give pretty mediocre results.
     
    SMS, Mar 7, 2010
    #4
  5. Paul Furman

    Better Info Guest

    Yes. Like these taken with an $80, 0.25x, fish-eye adapter on a P&S camera.

    http://farm3.static.flickr.com/2733/4413223426_e408833ce3_o.jpg

    http://farm5.static.flickr.com/4071/4413223430_34e325af04_o.jpg

    Used as fish-eye at 9mm EFL and 18mm EFL ultra-wide by using the P&S
    camera's super-zoom lens to choose the focal-length wanted. Just as sharp,
    flare-free, and CA free right up to the camera's own widest-angle where it
    is then no longer needed. A continuous zoom range with one pocketable
    camera and two pocketable adapter lenses, from 9mm - 736mm f/2.4-3.5, all
    for under $500. Without having to expose the sensor to dust and condensing
    or freezing humidity when changing them.

    When compared against the images produced with a fixed-focal-length $2000
    Nikkor fish-eye for DSLRs, this 0.25x adapter wins. That $2000 is just for
    a single focal-length too mind you.

    What were you were saying, SMS? You uselessly psychotic
    pretend-photographer role-playing DSLR-TROLL.


    Now remember you idiotic DSLR-Trolls, try to not misconstrue JPG artifacts
    for noise or over-sharpening again, as you idiots always do.


    So funny. Now that you DSLR-Trolls have taken the live-view benefits from
    P&S cameras, reticulated view-finders from P&S cameras, video-modes from
    P&S cameras, etc., etc., now you're going to start discovering the benefits
    of leaving your lens on your camera and using front-end adapters too.
    Benefits like no longer losing 2EV steps aperture when using tele-extenders
    nor getting dust all over your sensor with every lens change.
    Unfortunately, you'll be adding on so much more weight to your kit by using
    front-end adapters large enough to retain your lens' own widest apertures
    that you're back at square-one again.

    OMG! You're slowly turning your DSLRs into P&S cameras! Without the main
    benefits. LOL! Unfortunately, unlike pros that use P&S cameras in full
    manual mode most often, you'll still be using your DSLRs in idiots'
    auto-everything mode. Making your DSLRs into grossly cumbersome P&S
    cameras. Unfortunately you'll also never get out from under all the
    drawbacks of that image-shaking slapping mirror and image-distorting,
    slow-flash-sync, crippling focal-plane shutter and all the front and back
    focusing issues of your fast but wholly inaccurate phase-contrast focusing.

    This is getting more and more funny. The best comedy show on earth are the
    posts by DSLR proponents.
     
    Better Info, Mar 7, 2010
    #5
  6. Paul Furman

    Better Info Guest

    Yes. Like these taken with an $80, 0.25x, fish-eye adapter on a P&S camera.

    http://farm3.static.flickr.com/2733/4413223426_e408833ce3_o.jpg

    http://farm5.static.flickr.com/4071/4413223430_34e325af04_o.jpg

    Used as fish-eye at 9mm EFL and 18mm EFL ultra-wide by using the P&S
    camera's super-zoom lens to choose the focal-length wanted. Just as sharp,
    flare-free, and CA free right up to the camera's own widest-angle where it
    is then no longer needed. A continuous zoom range with one pocketable
    camera and two pocketable adapter lenses, from 9mm - 736mm f/2.4-3.5, all
    for under $500. Without having to expose the sensor to dust and condensing
    or freezing humidity when changing them.

    When compared against the images produced with a fixed-focal-length $2000
    Nikkor fish-eye for DSLRs, this 0.25x adapter wins. That $2000 is just for
    a single focal-length too mind you.

    What were you were saying, SMS? You uselessly psychotic
    pretend-photographer role-playing DSLR-TROLL.


    Now remember you idiotic DSLR-Trolls, try to not misconstrue JPG artifacts
    for noise or over-sharpening again, as you idiots always do.


    So funny. Now that you DSLR-Trolls have taken the live-view benefits from
    P&S cameras, reticulated view-finders from P&S cameras, video-modes from
    P&S cameras, etc., etc., now you're going to start discovering the benefits
    of leaving your lens on your camera and using front-end adapters too.
    Benefits like no longer losing 2EV steps aperture when using tele-extenders
    nor getting dust all over your sensor with every lens change.
    Unfortunately, you'll be adding on so much more weight to your kit by using
    front-end adapters large enough to retain your lens' own widest apertures
    that you're back at square-one again.

    OMG! You're slowly turning your DSLRs into P&S cameras! Without the main
    benefits. LOL! Unfortunately, unlike pros that use P&S cameras in full
    manual mode most often, you'll still be using your DSLRs in idiots'
    auto-everything mode. Making your DSLRs into grossly cumbersome P&S
    cameras. Unfortunately you'll also never get out from under all the
    drawbacks of that image-shaking slapping mirror and image-distorting,
    slow-flash-sync, crippling focal-plane shutter and all the front and back
    focusing issues of your fast but wholly inaccurate phase-focusing.

    This is getting more and more funny. The best comedy show on earth are the
    posts by DSLR proponents.
     
    Better Info, Mar 7, 2010
    #6
  7. Paul Furman

    LOL! Guest

    They're very poorly made, you can tell just from the specs.

    1 element, 1 group = no achromat.

    2 elements, 2 groups = no achromat.

    3 elements, 3 groups = no achromat.

    But then if they used achromats at the size required for DSLR lenses the
    prices would be as outrageous as buying a whole new fixed focal-length
    lens.

    I guess DSLR users will lose out on yet another benefit of P&S cameras.
    High-quality adapter lenses designed with quality achromats at low prices.

    LOL!
     
    LOL!, Mar 7, 2010
    #7
  8. Paul Furman

    Better Info Guest

    No you can't. You can't even produce these test-shots as good as this from
    your piece of shit DSLR. Prove it! Put up or shut up!
    Just as soon as you get rid of your silly and stupid-sounding DSLR's "crop
    factor" (LOL) definition.
     
    Better Info, Mar 7, 2010
    #8
  9. Paul Furman

    Better Info Guest

    No.

    Did have fun wasting that much time?

    Jump, Troll. JUMP!
     
    Better Info, Mar 7, 2010
    #9
  10. Paul Furman

    Better Info Guest

    An interesting lens. How come you didn't pick out any of these as an
    example?

    http://koyaanis.tripod.com/misc/f4_12mmC.JPG

    http://koyaanis.tripod.com/misc/f56_12mmC.JPG

    http://koyaanis.tripod.com/misc/f8_12mmC.JPG

    Are you afraid to show what even that lens and camera combo will do? I'll
    add that to my list of other inexpensive wide-angle solutions for P&S
    cameras, if they're still available. THANKS!

    I love it when I can put a troll to good use. :)

    Jump for me some more!
     
    Better Info, Mar 7, 2010
    #10
  11. Paul Furman

    LOL! Guest

    If someone wanted to jump for a psychotic troll they could find all the
    examples of wide-angle DSLR lenses that perform even poorer than that.
    Hell, they don't even have to be wide-angle lenses. I've seen DSLR
    fixed-focal-length, let alone zoom, lenses perform even poorer than that,
    costing well over $1000. Many examples posted to this very newsgroup, with
    their pride of course, until it is pointed out to them.

    LOL!
    LOL!!!!!!!!

    Fuckin' eh, that's funny. Keep barking and jumping! You desperately need to
    find something to date besides a bunch of unrelated names online. Keep this
    up and you'll be fantasizing that everyone in the world is all the same
    person ............ AND THEY'RE OUT TO GET YOU!

    LOL!!!!!!!!

    Here's a clue, to save you from your final break-down ...... not ONE person
    in the whole wide world gives even one lousy **** about you and what you
    are. If you disappeared from the planet, not one person would have ever
    noticed you were ever here. Prove it to yourself. Don't post for a month.
    See if anyone says, "Hey! What happened to that Chrlz?" They won't even
    notice you've been gone nor for how long. The same would happen in your
    real life too if you killed yourself. Until someone noticed the stench
    wafting up from your basement room.

    LOL!

    Damn I love the humor found on the net! It's like "Monty Python Meets One
    Flew Over the Cuckoo's Nest".

    LOL!
     
    LOL!, Mar 7, 2010
    #11
  12. Paul Furman

    LOL! Guest

    Damn, now the DSLR-Trolls are going to call you a P&S Troll too. Or the
    same one as all the other posters that they call P&S trolls.

    Maybe we can get Chrlz to add you to his psychotic-stalker's list of names
    too.

    LOL!
     
    LOL!, Mar 7, 2010
    #12
  13. It looks like an interesting collection of supplemental wide, fisheye,
    and close-up lenses, made for 58mm-threaded lenses. *In general*,
    final image quality depends on the attachment and original lens quality
    and especially on how well they "get along together". Results can be
    excellent, as with an "el-cheapo" fisheye I would have recommended
    to no one, but on a friend's P&S, it is excellent - and an Olympus .8x
    on my f2 Sony 707 zoom (but only near its lens widest zoom end...) is
    good to the corners wide open. Also in general, the non-fisheyes
    produce strong barrel "distortion" (they actually are fisheyes, but with
    restricted angles of view) and the best of these may use aspheric
    molded plastic elements to reduce optical problems, even if there is
    only one element.
    --DR
     
    David Ruether, Mar 7, 2010
    #13
  14. Paul Furman

    Peter Guest


    Spiratone lenses were pretty crappy and very cheap. I was talking about the
    fish eye conversion
    lens. As I said the picture reminds me of that old lens, which by the way,
    was junk glass.
     
    Peter, Mar 7, 2010
    #14
  15. Paul Furman

    Ray Fischer Guest

    You're a poor liar, asshole troll.
     
    Ray Fischer, Mar 7, 2010
    #15
  16. Paul Furman

    Charles Guest

    Plonk!
     
    Charles, Mar 7, 2010
    #16
  17. Paul Furman

    Charles Guest

    Plonk!
     
    Charles, Mar 7, 2010
    #17
  18. Paul Furman

    MikeWhy Guest

    Are you blind or just wouldn't know a bad image when you see it? Coma and CA
    are evident everywhere at every aperture. I presume your eyes work well
    enough. That leaves only one conclusion.
     
    MikeWhy, Mar 8, 2010
    #18
  19. Paul Furman

    John A. Guest

    I used to be pretty good at whack-a-mole.
     
    John A., Mar 9, 2010
    #19
    1. Advertisements

Ask a Question

Want to reply to this thread or ask your own question?

You'll need to choose a username for the site, which only take a couple of moments (here). After that, you can post your question and our members will help you out.