Switch to English Language Passer en langue française Omschakelen naar Nederlandse Taal Wechseln Sie zu deutschen Sprache Passa alla lingua italiana
Members: 70,536   Posts: 1,544,141   Online: 902
      
Page 2 of 3 FirstFirst 123 LastLast
Results 11 to 20 of 21
  1. #11

    Join Date
    Dec 2002
    Shooter
    Large Format
    Posts
    6,242
    John, For your information I use the BTZS and I wish that you would not cherry pick the question that was posed.

    For your information the question was as follows:

    "I'm trying BTZS and was wondering.
    Can I use the f stop and shutter speeds that corrispond with the given EV number as I move the f stops up and down the scale of the meter?"
    Mike A


    The answer is that there are several shutter speed and f stop combinations that will arrive at the same exposure. To take your answer would be to say that the exposure must be F 5.6 at 1/250 of a second rather then perhaps a more appropriate F 22 at 1/15 second which may be more appropriate to the exposure at hand.

    That as I read the question posed and not condensed as you have done is what the fellow is asking and the answer is that yes the photographer is at discretion to choose the Fstop and or shutter speed that are appropriate to the exposure at hand consistant with the EV that the meter indicates.

    He is indicating this question by the fact that he recognizes that there are other combinations as he alters the Fstop related to the EV on the meter. It is written in plain English.

    That is not at odds with BTZS. I would wonder where the heck this is misleading? Perhaps you can inform me on where this is wrong.

  2. #12

    Join Date
    Apr 2004
    Location
    New Zealand
    Shooter
    Multi Format
    Posts
    2,410
    Images
    4
    You gave an absolute answer without the qualification of prior testing/calibration that the BTZS requires.

  3. #13

    Join Date
    Dec 2002
    Shooter
    Large Format
    Posts
    6,242
    Quote Originally Posted by John McCallum
    You gave an absolute answer without the qualification of prior testing/calibration that the BTZS requires.

    Jesus Christ John, that is nitpicking...the man indicated that he was attempting to use BTZS and that sort of predicates the response does it not?

    In fact the question does not depend on the use of BTZS...the question could have been posed on the Ansel Adams Zone System or even the Smokey Joes system of Involved Windage and Elevation Inclusion...it is basic photographic knowledge and theory.

    Your position and response is viewed as being small minded and petty.

  4. #14

    Join Date
    Apr 2004
    Location
    New Zealand
    Shooter
    Multi Format
    Posts
    2,410
    Images
    4
    Quote Originally Posted by Donald Miller
    Jesus Christ John, that is nitpicking...
    I guess it is. Is that not what the BTZS is all about?


    [size=1](I'm just john).[/size]

  5. #15

    Join Date
    Dec 2002
    Shooter
    Large Format
    Posts
    6,242
    Quote Originally Posted by John McCallum
    I guess it is. Is that not what the BTZS is all about?
    Considering this comment, I wouldn't even begin to qualify that with a direct response. It would be a literal waste of time.

  6. #16

    Join Date
    Dec 2002
    Shooter
    Large Format
    Posts
    6,242
    Quote Originally Posted by John McCallum
    Perhaps the point is, that someone learning requires specific and accurate information (without assumptions) or they can be sent off on the wrong track.
    Perhaps we should offer entrance exams before any and all questions will be considered. Would you like to volunteer for the position to see that academic standards are met prior to presenting the question to the respondents...or do you have the answers to any and all questions posed?

    On the subject of assumptions. It seems to me that if anyone was jumping to erroneous conclusions it might have been that guy in New Zealand. The post stands and the title says BTZS...what more do you want? Maybe to fish out of being a glaring idiot in this instance.

  7. #17

    Join Date
    Jan 2005
    Location
    Yorkville, Il
    Shooter
    ULarge Format
    Posts
    324
    Donald, Your interpretation of my some what cryptic question is correct.
    Jorge, I understand your explanation regarding the ASA as well.

    I would have addressed this earlier but I was out photographing.

    Thank you for your responses gentleman,
    Mike

  8. #18

    Join Date
    Sep 2002
    Shooter
    Large Format
    Posts
    4,530
    Quote Originally Posted by Donald Miller
    Jorge, I don't recall reading anywhere in the original question where the gentleman suggested doing anything other then using the determined ASA. The question was about combinations of shutter speeds and F stops as related to a given EV.

    In response to your statement, if the meter doesn't suggest the proper exposure, who or what the the heck does?
    Oh borther, it gives you the contrast range so you can calculate the SBR, consult your charts (or input them in the palm) and then obtain the appropirate f stop/shutter speed combination based on the proper film speed derived from your tests....got it?

  9. #19

    Join Date
    Dec 2002
    Shooter
    Large Format
    Posts
    6,242
    Quote Originally Posted by Jorge
    Oh borther, it gives you the contrast range so you can calculate the SBR, consult your charts (or input them in the palm) and then obtain the appropirate f stop/shutter speed combination based on the proper film speed derived from your tests....got it?

    Yes, but the exposure is determined by the EV reading of the meter based on the shadow value...is it not?

    Which brings us back to the initial question. That being the one that apparently I interperted correctly. The answer to which is that any combination of shutter speed and f stop can be used that corresponds to the EV of the determined exposure.

    Now what is it that has not been gotten and who is it that failed to grasp it?

  10. #20

    Join Date
    Sep 2002
    Shooter
    Large Format
    Posts
    4,530
    Quote Originally Posted by Donald Miller
    Yes, but the exposure is determined by the EV reading of the meter based on the shadow value...is it not?

    Which brings us back to the initial question. That being the one that apparently I interperted correctly. The answer to which is that any combination of shutter speed and f stop can be used that corresponds to the EV of the determined exposure.

    Now what is it that has not been gotten and who is it that failed to grasp it?
    :rolleyes:

Page 2 of 3 FirstFirst 123 LastLast


 

APUG PARTNERS EQUALLY FUNDING OUR COMMUNITY:



Contact Us  |  Support Us!  |  Advertise  |  Site Terms  |  Archive  —   Search  |  Mobile Device Access  |  RSS  |  Facebook  |  Linkedin