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  1. #11
    Join Date
    Mar 2005
    Posts
    221

    Auto ISO

    I'm a tad confused as to how this works - on the M_inolta A200 that I used previously, it 'increased' the ISO speed when lighting conditions deteriorated.
    M_inolta deliberatly spelt this way to prevent advertising link being added.

    I've set the ISO setting to AUTO & ISO Correction in AUTO to 200 to 3200 but nothing appears to happen in mode that I use - previously I believe that it was only effective in 'Sports' Mode.

    Any one any ideas.
    Last edited by WightWalker; 12-08-2005 at 09:01 AM.
    Illustrated walks on Isle of Wight - www.iwcam.co.uk

  2. #12
    Join Date
    Mar 2005
    Location
    Chapel Hill, NC
    Posts
    647
    Yeah, this is an annoying one - turns out Auto ISO only works if your EV Compensation is at 0. If you dial in any EV (like the default +0.5 that I like to have), ISO stays at 200.
    Pentax *ist DS
    smc-P DA 18-55 f/3.5-5.6
    My flickr gallery

  3. #13
    Join Date
    Mar 2005
    Posts
    221

    Auto ISO

    I'd forgotten that even with the ISO WARNING set to say 400, there is NO warning when the ISO is increased automatically above that setting - the ISO WARNING ONLY works when adjusted manually.

    Shame that P_entax didn't link ISO WARNING to function with AUTO ISO.
    P_entax deliberatly spelt this way to prevent advertising link being added.

    I've run a few shots in low lighting & the ISO was automatically increased to 3200 - within the set range.

    On the previous fimware, AUTO only worked in Sports Mode.


    Thanks for the tip on exposure compenation.
    Last edited by WightWalker; 12-08-2005 at 09:02 AM.
    Illustrated walks on Isle of Wight - www.iwcam.co.uk

  4. #14
    Join Date
    Mar 2005
    Location
    Chapel Hill, NC
    Posts
    647
    Yeah, indeed, there are still a few things that could stand to be improved, imo:
    • Take flash mode out of the Fn menu and replace it with something useful - metering mode, for example. Or AF point selection mode. Or Flash Exposure Compensation, even... I don't get why it's there anyway, I don't think anybody changes it beyond the initial selection - and if you're that into flash, you'll have an external unit anyway.
    • Link ISO warning to Auto ISO
    • Make auto ISO work with EV compensation (could make this optional via a custom function)
    • Add a user-selectable minimum shutter speed for Auto ISO to target.
    Last edited by Balrog; 12-04-2005 at 04:36 AM.
    Pentax *ist DS
    smc-P DA 18-55 f/3.5-5.6
    My flickr gallery

  5. #15
    Join Date
    May 2005
    Posts
    129
    Take the flash out of Fn menu and put in metering mode!!
    Pentax *Ist DS + growing number of equipment
    Canon PowerShot A510
    Earth/Europe/Slovenia

    - Gallery -

  6. #16
    Join Date
    Sep 2005
    Location
    Dallas
    Posts
    58
    Any noticeable improvement for picture quality (sharpness-wise for jpeg) after the firmware upgrade? What is item #4 - The effect of Digital soft filters can be selected from weak, middle or strong?

  7. #17
    Join Date
    Mar 2005
    Location
    Chapel Hill, NC
    Posts
    647
    There's nothing wrong with the JPEG sharpness anyway, if you set it higher in-camera.
    The "Digital Soft Filters" thing just adds a variable-strength 'soft-focus' effect to the image ... something better left to PP anyway, imo.
    Pentax *ist DS
    smc-P DA 18-55 f/3.5-5.6
    My flickr gallery

  8. #18
    Join Date
    Mar 2005
    Posts
    221

    JPEG Sharpness

    I bet no one ever comments on JPEG sharpness (or lack of it), for example, on the Canon_Rebel XT.

    Just because DP Review went 'over the top' in critiscising the Pentax, the mud has stuck & there's this mistaken belief that the Pentax JPEG quality is inferior.

    DP Review has NEVER published the same tests that they did for the Pentax with any other dSRL, to the best of my knowledge - why I wonder.

    I downloaded comparative images (watch face) from DP Review for the Rebel XT & Pentax and if anything, the Pentax was sharper BUT the reviewer stated the opposite.

    All dSRL's don't process images as much in the camera as 'point & shoot' cameras which means that they require some post processing to get the best results whilst leaving the unprocessed image alone.
    Last edited by WightWalker; 12-08-2005 at 10:28 AM.
    Illustrated walks on Isle of Wight - www.iwcam.co.uk

  9. #19
    Join Date
    Mar 2005
    Posts
    221

    Auto ISO

    I've found this feature quite useful whilst out yesterday shooting under dull conditions.

    I tend to use Tv mode set to 1/180 which is fast enough to prevent camera shake on the 'kit lens'.

    However, as mentioned earlier, there's no indication as to when this 'kicks in' or what criteria is set by the camera.

    Using Tv mode as the example, I believe that the aperature will be continually opened up until it reaches the 'end stop'. At this point the ISO value will be increased up to what ever value has been set; obviously once an ISO value of 3200 has been reached, then the aperature figure will flash to warn of an exposure problem.
    Illustrated walks on Isle of Wight - www.iwcam.co.uk

  10. #20
    Join Date
    Mar 2005
    Posts
    221

    Who's adding links to posts

    Quote Originally Posted by dallas75287
    Any noticeable improvement for picture quality (sharpness-wise for jpeg) after the firmware upgrade? What is item #4 - The effect of Digital soft filters can be selected from weak, middle or strong?
    I've noticed advertising links being added to posts which is nothing to do with the originator. i.e. picture quality adds the following:
    SPONSORED LINK
    Which? Report on Picture Quality
    Which? Online gives unbiased advice and information on a vast range of products and services. Register today to read thousands of reviews and reports, helping you make informed decisions.
    trial.which.co.uk


    Could the Modorator please investigate & advise
    Last edited by WightWalker; 12-08-2005 at 09:05 AM.
    Illustrated walks on Isle of Wight - www.iwcam.co.uk

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