I need a polarizer filter for my pentax 67's 105mm

Discussion in 'Medium Format Cameras and Accessories' started by game, Nov 6, 2006.

  1. game

    game Member

    Messages:
    371
    Joined:
    Aug 10, 2005
    Location:
    netherlands
    Shooter:
    Multi Format
    Hi there,
    this is a simple question.
    I want to buy a filter for my pentax 67's 105mm lens. But I don't know it's diameter. The lens does not give any info on that. When measuring I measure 67mm, but it could also be 68 or 66.
    I am sure someone here knows what I should have.

    One other question:
    I will buy a polarizing filter for my pentax 67, any suggestions or things I should pay attention to?
    Brands that are good, brand to avoid. Circular/linear?

    Thanks in advance!!! kind regards game
     
  2. roteague

    roteague Member

    Messages:
    6,671
    Joined:
    Jul 15, 2004
    Location:
    Kaneohe, Haw
    Shooter:
    4x5 Format
    I would probably be a 67mm, since that is a standard size (68 or 66 aren't).
     
  3. Dave Parker

    Dave Parker Inactive

    Messages:
    4,049
    Joined:
    Aug 14, 2004
    Shooter:
    Multi Format
    67mm, that is pretty much a standard sized filter in the Medium format lenses..

    Linear will work fine on the 67...stick to a good name brand and you will be fine, some of the cheaper polarizers can have a color cast to them..

    Dave
     
  4. naturephoto1

    naturephoto1 Subscriber

    Messages:
    1,819
    Joined:
    Mar 26, 2006
    Location:
    Breinigsvill
    Shooter:
    Multi Format
    I just confirmed it on the B & H Photo website, the Pentax 105mm f 2.4 lens takes a 67mm filter.

    I agree with Dave to get a good Polarizing filter. If shooting color transparencies, you may wish to opt for a warm Polarizing filter.

    Rich
     
  5. game

    game Member

    Messages:
    371
    Joined:
    Aug 10, 2005
    Location:
    netherlands
    Shooter:
    Multi Format
    as far as I know, the linear filter and the circular perform the same but the circular should be used with autofocus or TTL camera's.
    I use none of those both methods, so I guess there is no reason to buy a circular. Or is there?

    Second, yes I guess it should be 67 then...

    Third, what are good brands?

    THANKS
     
  6. Dave Parker

    Dave Parker Inactive

    Messages:
    4,049
    Joined:
    Aug 14, 2004
    Shooter:
    Multi Format
    On your manual focus camera, there is no reason to spend the extra money for the circular, they both do the same thing, but the extra expence is not needed.

    Brands, I use Tiffen, Hoya's, B+W and helopans, I know alot of people use Helos and B+W's but normally I have not found much of a difference, the most important thing is to make sure it does not have a color cast..

    Dave
     
  7. David A. Goldfarb

    David A. Goldfarb Moderator Staff Member

    Messages:
    17,922
    Joined:
    Sep 7, 2002
    Location:
    Honolulu, Ha
    Shooter:
    Large Format
    If you have TTL metering that uses a beamsplitter (like many Canon cameras--even FD era), that's another case where you should use a circular polarizer, but I don't think that's the case with the Pentax 6x7.
     
  8. game

    game Member

    Messages:
    371
    Joined:
    Aug 10, 2005
    Location:
    netherlands
    Shooter:
    Multi Format
    how do you find out about cast, when buying over the internet?
    thanks, game
     
  9. jovo

    jovo Membership Council

    Messages:
    4,124
    Joined:
    Feb 8, 2004
    Location:
    Jacksonville
    Shooter:
    Multi Format
    Consider buying a 77mm filter, and get a step up ring for the 105 lens (67-77). I have the 55, 105, 135, and 200mm lenses. The 55 and 200mm lenses use the 77mm filter, and the 105 and 135 use the 67, so the one large filter fits all the lenses when the step-up ring is used. If and when you may acquire any of those others, you're already set with filters. BTW...I use a circular polarizer, not a linear one.
     
  10. naturephoto1

    naturephoto1 Subscriber

    Messages:
    1,819
    Joined:
    Mar 26, 2006
    Location:
    Breinigsvill
    Shooter:
    Multi Format
    The Leica R series camera need the circular polarizers as well. As David has said, I do not know the Pentax 6 X 7 Cameras and if they need the Circular Polarizers as well. As far as I know, both the B & W and the Heliopan filters use Schott Glass. I have for now stopped using my Heliopan Linear and Circular Polarizers because I am now almost always the Singh-Ray Circular Warm Polarizing Filters (their glass is outstanding). The newest of their filters that I have is their Lighter Brighter Warm Polarizing Filter. But the Singh-Ray Polarizers are Circular. I use the Warm Polarizers because I am shooting 99.9% Transparencies.

    Rich
     
  11. game

    game Member

    Messages:
    371
    Joined:
    Aug 10, 2005
    Location:
    netherlands
    Shooter:
    Multi Format
    hmmm could be good advice, but off course such a thing is unavailable ererywhere, I'll keep out looking since I indeeed hae a 200mm too.

    anyone else on the cast thing, and brands?
     
  12. roteague

    roteague Member

    Messages:
    6,671
    Joined:
    Jul 15, 2004
    Location:
    Kaneohe, Haw
    Shooter:
    4x5 Format
    Most new polarizers these days are circular, so you may not find anything else offered.
     
  13. Dave Parker

    Dave Parker Inactive

    Messages:
    4,049
    Joined:
    Aug 14, 2004
    Shooter:
    Multi Format
    The 67 that I owned, did not require a circular, but as Robert said, the circulars are far more common now a days, so a linear could be difficult to find, you might check on ebay, I have picked a ton of good quality filters up for a really good price on there, far less expensive than many of the retail outlets.

    Dave
     
  14. naturephoto1

    naturephoto1 Subscriber

    Messages:
    1,819
    Joined:
    Mar 26, 2006
    Location:
    Breinigsvill
    Shooter:
    Multi Format
    If you are considering the other lenses for the system, I would consider John's suggestion in getting the 77mm Polarizer and a step-up ring from 67mm to 77mm. As to filter makes, I would tend to bite the bullet and consider a Circular Polarizer from Hoya, B & W, Heliopan, of Singh-Ray (all their Polarizers are circular). If you decide to use the Cokin P System holder and Cokin P size filters, you could consider getting a Singh-Ray filter in the P size. It will cover filter sizes up to 82mm. The new Lighter Brighter Singh-Ray filters will allow more light through (about 1/2 - 1 stop more) than the other makes. As a result, the Singh-Ray filters will make focusing a little easier and allow you to shoot at a little faster shutter speed. Presently, I do not see regular Polarizing Filters on their Website. They used to make them. I am sure that they will make them for you. If you decide to go that way, ask about the filter in the new Lighter Brighter version.

    Here is the Singh-Ray link:

    http://www.singh-ray.com/

    Rich
     
  15. David A. Goldfarb

    David A. Goldfarb Moderator Staff Member

    Messages:
    17,922
    Joined:
    Sep 7, 2002
    Location:
    Honolulu, Ha
    Shooter:
    Large Format
    B+W calls their linear polarizer a "Top Polarizer." I use linear polarizers. The only camera I have that would require a circular polarizer is my Canon New F-1, and I tend to use that mainly with long lenses that have drop-in filters, for which a polarizer is unavailable or impractical, and on the very odd occasion that I might want a polarizer with a shorter lens (not that it wouldn't be useful--I just tend to shoot other formats more), I can just calculate the exposure compensation manually.
     
  16. game

    game Member

    Messages:
    371
    Joined:
    Aug 10, 2005
    Location:
    netherlands
    Shooter:
    Multi Format
    Walimex, does anyone knows that brand??
     
  17. Dave Parker

    Dave Parker Inactive

    Messages:
    4,049
    Joined:
    Aug 14, 2004
    Shooter:
    Multi Format
    Never heard of it?
     
  18. dpurdy

    dpurdy Subscriber

    Messages:
    2,211
    Joined:
    Jun 24, 2006
    Location:
    Portland OR
    Shooter:
    8x10 Format
    Pentax Polarizor

    The polarizor I have on my 105 says Asahi Pentax 67 right on it. Very nice. Has the little pentax bayonet connectors as well. I love the filter and use it even in studio with portraits and studio lights. Got it off ebay for 20 something dollars and is mint condition.
     
  19. game

    game Member

    Messages:
    371
    Joined:
    Aug 10, 2005
    Location:
    netherlands
    Shooter:
    Multi Format
    well that's a great find indeed.
    but I aint gonna wait for smething likek that to come along.
    I found something, that's produced by schneider, for a decent price. so I think I am gonna go for that.
    Greets game