Shutter Lag on digital camera...

Discussion in 'Digital Cameras' started by erics, Feb 25, 2005.

  1. erics

    erics Guest

    We have a old canon A20 which must be getting on for three years old -
    currently mostly using it for 6x4 pictures so 2MP isn't a massive issue,
    although the option to print bigger or crop would be useful, hence more mega
    pixels. One thing we have found to be a continual annoyance is the shutter
    lag as it is used a lot to take family pictures and kids don't stay still
    for long.

    Are the modern digital compact cameras much improved in terms of shutter
    lag, or would you only notice a big improvement by going for a dSLR?

    Considering the Canon A95 as a possible replacement - anyone have any
    experieince of the shutter lag on this?
    Also considering the value of getting something with a larger zoom such as
    the DiMAGE Z5 which according to the website has a very small shutter lag
    (0.06) which I find hard to believe as reviews don't seem to mention this.
     
    erics, Feb 25, 2005
    #1
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  2. erics

    Eric Gill Guest

    Some. Oddly enough, the more money you spend, the faster everything gets
    (to a point).
    Only if you consider "usually no lag at all" and "able to shoot 5 frames a
    second or more" a big improvement.
     
    Eric Gill, Feb 25, 2005
    #2
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  3. erics

    erics Guest

    I don't think more money is the issue in this case as I am on about the
    advance of technology at the same price point as my A20 was 3 years ago
    (~£300). Looking at the specs of similarly priced cameras (not allowing for
    inflation etc) it is obvious you get a good deal more pixels, control,
    features, and possibly lens. It is not so easy to see if at this price point
    the speed of processing etc has improved - it is almost like they don't want
    to admit it is a digital camera problem.

    I have since read that one way of reducing shutter lag is pre-focusing, or
    using a camera with manual focus, as the AF is the majority of the delay? I
    guess there must have also been shutter lag with my old 35mm point and shoot
    camera, but because it was typically weeks before the pictures come back it
    wasn't immediately obvious. I would hate to think the number of pictures we
    have "missed" because the camera didn't fire when we first hit the button!
    "usually no lag at all" would be a big improvement, "5 frames a second"
    would be over kill for me!

    I like to think that a "good" digital camera would encourage creativity and
    experimentation, as well as capture a record of events for the future. The
    trouble is getting the right camera.
     
    erics, Feb 25, 2005
    #3
  4. erics

    erics Guest


    Thanks for the info. I am tempted by a dSLR but need to justify the extra
    cost in my own mind (and the persuade the wife!). I also don't want to
    needlessly pay for more camera than I require.

    I intend to go to a store to get a feeling for a few cameras, just want to
    be a little informed before I go so I can tell a sales gimmick from the
    truth!
     
    erics, Feb 25, 2005
    #4
  5. It's not the shutter lag so much as it is the slow auto focus. On most point
    and shoot cameras if you can press the shutter down half-way to let the AF
    do it's job and then hold for the moment you want to shoot, I think you'll
    notice the "lag" from that half-way to shutter-release is not that much.
     
    Dave R knows who, Feb 25, 2005
    #5
  6. erics

    Ron Hunter Guest

    I think you need to update your information. I have a Kodak DX6440
    (last year's model), and the shutter lag is minimal. It has never been
    a problem, and newer models are even faster. As for multiple shots, I
    can take up to 6 shots before having to write to the card. Look for a
    camera with a large buffer ram. As for feel, if you mean heavy and
    bulky, yes, the DSLR has that 'advantage'.
     
    Ron Hunter, Feb 25, 2005
    #6
  7. erics

    Rob Guest


    The fastest camera in small cameras is the Ricoh R1 which is 4Mp and
    there is a 5Mp (model?) have a look at these specs yes they are correct
    not a sales pitch.
     
    Rob, Feb 26, 2005
    #7
  8. erics

    Bigguy Guest

    Go try for yourself - nothing beats 'hands on'...

    Going from my previous CP4500 to a D70 was a revalation, a near religious
    experience...
    No P+S I have tried has anything near the response and feel of a DSLR.

    Anyone used to 35mm SLRs cannot help but be frustrated by the slow response
    of P+S cameras... if you're new to photography you may not notice (or assume
    it's a fault of the user).
    Great for outdoor, sunny days, lanscapes etc... lousy for low light, candids
    or action shots... I took my old Fuji S3000 to the Superbikes and got lots
    of shots of tailpipes leaving shot!!

    I've been taking pictures for 30 years so luckily I knew the fault was not
    with me ;-)

    Love my D70 - push the button and it takes the shot you see in the
    viewfinder - kind of what photography is about I feel...
    Any good shots I took with the CP5400 were 70% chance!!

    Go to your nearest camera store and try some DSLRs... take your own CF card
    if 'poss and take the results home.

    I still take the CP5400 on walks and travelling for snaps and 'covert' shots
    but for anything serious its the D70.

    A few D70 pics from around town
    http://www.guytittley.pwp.blueyonder.co.uk/Gallery/album/index.html


    Guy
     
    Bigguy, Feb 26, 2005
    #8
  9. erics

    Tony M Guest

    5Mp - R1v, release in UK next month, price approx £230. (interestingly,
    it was on the QVC shoppoing channel this morning as pick of the day)

    Tony M
     
    Tony M, Feb 26, 2005
    #9
  10. erics

    Rob Guest

    http://www.ricoh.com.au/products/vi...id=559&range=Ricoh+Digital+Cameras&RangeID=10

    High resolution 4.0 megapixels CCD
    Advanced precision technology
    4.8x magnification wide angle 28-135mm optical zoom lens
    3.6x digital zoom (combined 17x magnification)
    World leading 0.8 second start-up time
    World's fastest shutter response time before focus lock - 0.05 seconds
    World's fastest shutter response time after focus lock - 0.003 of a second
    Quick performance 0.9 second interval shooting



    Link to the R1V 5Mp camera at the above URL
     
    Rob, Feb 26, 2005
    #10
  11. erics

    tellme Guest

    www.qvc.com
     
    tellme, Feb 26, 2005
    #11
  12. erics

    Tony Hwang Guest

    Hi,
    Film is instant total exposure vs. sensor is scaned. It takes fraction
    of a second to complete image and send it to buffer. Also when you turn
    the camera on, the firmware has to do self check, go to ready, etc.,
    another fraction of seconds, etc. They all adds up.
    It's like computer OS(Windows, Linux, OS X, etc.) boot up time.
    Tony
     
    Tony Hwang, Feb 26, 2005
    #12
  13. erics

    Tony Hwang Guest

    Hi,
    Really?
    So how CCD works? Care to run down?
    Let's start with logic block diagram of any digital camera.
    Of course mechanical movement is SLOWER than the speed of electrons.
    Movie films shoots how many fps? It can even catch a bullet flying.
    Ever caught a fired bullet on film in a physics lab?
    Tony
     
    Tony Hwang, Feb 27, 2005
    #13
  14. erics

    Ron Hunter Guest

    I can't imagine why anyone would worry about a .8 second startup time,
    as opposed to .25 seconds. I don't think I can raise the camera to
    shooting position from turnon that fast. One second between shots is
    enough, unless you want a 'burst mode', which many moderately priced
    cameras offer.
     
    Ron Hunter, Feb 27, 2005
    #14
  15. erics

    Ron Hunter Guest

    I am certainly glad it isn't THAT slow. Unix can take twenty minutes to
    boot!
     
    Ron Hunter, Feb 27, 2005
    #15
  16. erics

    Ron Hunter Guest

    Yes, and how much film does it expend doing that? And how much does
    such a camera cost.
    And digitals don't capture IMax, either. Terrible.
    Please be reasonable.
     
    Ron Hunter, Feb 27, 2005
    #16
  17. erics

    Ron Hunter Guest

    That feature is available on many cameras. Mine does the same thing.
    The manual claims that leaving the lens extended saves battery power
    when doing intermittent shooting. I am sure it does, but I don't feel
    comfortable carrying the camera around with the lens uncovered. In
    spite of its rather slow (4 second) startup time, I usually just turn it
    off.
     
    Ron Hunter, Feb 27, 2005
    #17
  18. Actually, your film P&S camera was probably faster. Most of these use
    an infrared system, sweeping a dot of IR light across the subject and
    seeing when it is brightest as seen from a sensor located in another
    position on the camera front. It's basically an automated rangefinder,
    and it can be made to work pretty fast.

    Camera manufacturers *could* put the same sort of system in digital P&S
    cameras, but nobody seems to. I guess it's just too attractive to use
    the video output of the main CCD for focusing. But DSLRs are fast to
    focus because they use the same sort of focusing systems as film SLRs.
    These measure through the taking lens, but they do *not* use the main
    CCD.

    Dave
     
    Dave Martindale, Feb 27, 2005
    #18
  19. A fat chance of that happening ...
     
    Stephen Poley, Feb 27, 2005
    #19
  20. erics

    Rob Guest

    Were not talking DSLR camera here but small compact cameras - don't do
    a comparison with a DSLR.
     
    Rob, Feb 27, 2005
    #20
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