Berkeley CSUA MOTD:Entry 35397
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2004/12/22-23 [Consumer/Camera] UID:35397 Activity:high
12/22   There hasn't been a camera thread in a bit. I'm lazy, can someone help
        me decide that a dig SLR is better for me than a "prosumer" one,
        and if so that the Canon dig. rebel at $770 after rebate is the best
        deal? It appears to be $500 less than a Nikon D70.
        \- the +$800 non SLR digitals are for rich morons --psb
        and if so that the Canon dig. rebel at $770 after rebate is the best
        deal? It appears to be $500 less than a Nikon D70.
        \_ It really depends what you want to use it for.  I think for most
           semi-serious photographers, you're probably better off spending less
           money on a fixed-lens camera than more money on an SLR+lens.  A
           number of prosumer cameras have lenses which are quite acceptable,
           although there are some compromises to be made.  If you don't
           already have a bunch of lenses, and don't know exactly how much
           photography you're going to be doing, I'd definitely look at a
           manual-control prosumer camera with a decent fixed lens.  -tom
           \_ yes, I agree with tom that prosumer lenses have their
              advantages.  I'd say price and portability are the two
              main ones.  Have you seen how bulky those Digital SLRs are with
              those long lenses?
        \-nikon d70body is $1k - $100rebate = $900. although unless you have
        a lot of nice lenses you probably do want to get the kit lens. --psb
         \_ yea I was comparing basic kits. the canon body is $670. So is the
            Nikon kit lens worth the extra dough over Canon's? Getting the
            black body on the Canon amusingly seems to add $40. The Nikon lens
            is a DX which I recall you bitching about.
            \- whether the lens is worth it to you obviously depends on
               what you are sitting on and what you plan to shoot. nobody
               is saying "oh it is a piece of shit lens" ... independent
               of how it may fit your needs, the general consensus seems
               to be "it is fairly priced". i have a nikkor AF-D 18-35
               but i bought the kit lens because i have a second body and
               the pix i care about are often paroramics so i didnt want
               to keep swapping lenses. BTW, a huge factor in cameras are
               operational issues that cant be expressed in single number
               statistics like pixels or flash sync speed etc. if one camera
               has something 3 deep on a menu and another camera has a button
               that can immediately control that setting, that kind of thing
               can make a huge difference. --psb
               \_ ok, agreed... I'm sitting on nada, I've kind of followed the
                  market for a while now though. I suppose I wonder why the
                  Canon kit with similar specs ends up $500 less than the
                  Nikon. I think I understand the usability concerns with this
                  Canon camera. Are the lenses different in just "general
                  optical quality" or am I missing something else... ok thx.
                  \- there are a lot fo comparisons on http://photo.net, dpreview
                     etc. if you post non-anonymously i would be more inclined
                     to send you the links.
        \_ if you dont' have any lens at first place, then, go with whatever
           you want: Canon, Nikon, Sigma, Pentax.  All of them are pretty good.
           the key is control, as post earlier.  Make sure the camera you use
           has easy access (e.g. hardware button) for 1. white balance, and
           2. exposure compensation.  If you know anything about photography,
           then, you probably want seperate dial/control for apature and
           shutter speed as well.  Canon Digital Rebel combines apature and
           shutter speed into one control.  For person like me who tend to
           fiddle with both on every picture, that is some serious usability
           issue.  As for lenses, I would ditch the kit lens and get a better
           one, and get as wide as you can afford.
                \- the DX format "G" 18mm lens is going to be much
                   cheaper than anything else which will be an option
                   if he goes with the nikon. otherwise you are talking
                   about a lens with a much more limited range like the
                   18-35 [an AF-D lens] or you are talking about +$800
                   lenses. --psb
        \_ I would go with the Canon 300D (Digital Rebel). Not only is it
           cheaper (w/ 18-55mm lens) than the D70 (w/o lens), it also uses
           a CMOS sensor rather than a CCD. The upshot for a non-pro is
           that the 300D will produce better photos with less fiddling than
           the D70 (a cmos sensor gets a RGB value at every "pixel" whereas
           a CCD only gets one value at each "pixel" and then interpolates
           the others from adjacent pixels). Some of the limitations of the
           \_ This is SOOOOOO Not true. I hope no one is buying the 300D
              based on this lie. All sensors, CMOS or CCD, records only
              one color per pixel. The bayer pattern then merges the colors
              to form one final pixel. What you get is a slight loss of
              sharpness. For the record, only the foveon sensor is physically
              able to record all 3 colors at a single pixel location.
           300D are that it takes a while to boot from standby whereas the
           D70 is instant on, that makes some difference, but I set the
           standby to 30 mins on my 300D when I need to do quick shooting
           and this doesn't reduce my battery life noticeably. The 300D
           also doesn't have some of the pro features that the D70 and
           10/20D have, but if you are looking at a pro-sumer camera, then
           the 300D will be more than sufficient.
           The other big advantage I find is that Canon lenses are cheaper
           used than Nikon lenses and also Canon's lower end lenses are of
           much better optical quality than Nikon's lower end lenses. And
           you could always get yourself a Canon "L" series lens (generally
           consider the best lens you can buy from any vendor).
                    \- the canon 20d vs d70 is a serious question if you
                       take out $$$. i think the d70 is pretty clearly
                       a better camera than the 300d. the only justification
                       for the 300d would be large investment in canon lenses
                       in which case you would probably be looking at the 20d
                       anyway. i would take the cmos/ccd stuff above with a
                       grain of salt. --psb
                        \_ The noise levels of the 300D/10D sensor at the
                           same ISO and shutter speed are lower than the
                           D70's:
                           http://www.dpreview.com/reviews/nikond70/page14.asp
                           \- focusing [NPI] on a couple of percent difference
                              on laboratory condition, blownup shots is silly.
                              there is a giant difference in noice between
                              physically smaller sensors with same #pixels
                              but suggesting a signficant difference in
                              noise between the d70 and 300 is "noise" ...
                              it's better to look at more significant
                              differences [like camera functionality and
                              interface] than these marginal qualitative
                              ones. d70 vs 300d: 1/500 vs 1/200 flash sync.
                              d70: better metering. 8000th vs 4000th for
                              top shutter speed. much much larger buffer
                              for continuous shooting in d70. better whitebal
                              control. come on. this is not a serious contest.
                              with the 20d it is a serious comparison. --psb
           \_ Yeah they have a rebate deal where you get extra $100 rebates
              on lenses bought with the drebel. I have a hard time determining
              the value to me of some of these though. The 17-40 f/4 L one
              could be interesting, could get with camera for <$1100.
              Adding a tele this gets pretty pricey although I suppose the
              lenses are a better long term investment than the camera.
              One other thing about the SLR is the sensor size:
              http://www.dpreview.com/reviews/canoneos300d/page14.asp
                \_ I don't remember which lenses qualify for the rebate,
                   but if the 75-300 IS or the 28-135 IS qualify, I would
                   recommend getting one of those.
                   \_ while they are good lenses, don't forget that
                      dSLRs have a cropping factor of 1.3x to 1.6x (some).
                      So that means a 28mm becomes a 44mm (example only)
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www.dpreview.com/reviews/nikond70/page14.asp
Standard Test ISO equivalence on a digital camera is the ability to increase the sensit ivity of the sensor to enable faster shutter speeds and/or better perfor mance in low light. The way this works in a digital camera is by "turnin g up the volume" (gain) on the CCD's signal amplifiers. Nothing is witho ut its price however and doing so also typically increases visible noise (random speckles visible all over the image). We are now using a more reliable, repeatable and neutral method for evalu ating noise. Noise i s measured as the standard deviation of the medium gray patch on a Greta g MacBeth ColorChecker chart. The image is normalized before measurement of noise to remove the possibility of figures being affected by image c ontrast (one method of masking noise). Note that noise numbers shown on the graphs below can not be compared to those in older reviews. Test notes: * Shots taken at approximately 21C (70F) * Lighting was simulated daylight * Manual white balance * Aperture Priority Nikon D70 vs. Red Green Blue channels Visually a very similar performance, although looking at the split out RG B crops you can see that the pattern of noise is quite different at high er ISO's. At ISO 1600 the 300D's noise pattern is quite large and blotch y, the D70 with much finer more granular noise. Red Green Blue channels Unsurprisingly the D70 and D100 appear to be neck and neck, the D70 makes a better job of the manual preset white balance and maintaining color n eutrality at higher sensitivities, the D100's higher ISO gray patch taki ng a slightly pink cast. Indicated ISO sensitivity is on the horizontal axis of this graph, standa rd deviation of each of the red, green and blue channels (normalized) ar e on the vertical axis.
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www.dpreview.com/reviews/canoneos300d/page14.asp
Prosumer) Tests on this page were carried out as described on the previous page. As promised in our pre-production review we have updated this noise test p age with results from the eight megapixel Sony DSC-F828 as well as the S ony DSC-F717 and Minolta DiMAGE A1. Test notes: * Shots taken at approximately 21C (70F) * Lighting was simulated daylight * Manual white balance * Aperture Priority Canon EOS 300D vs. Sony DSC-F828 By comparing the exposure values below we can state that the Canon EOS 30 0D is approximately 07 EV (three quarters of a stop) more sensitive at the indicated ISO setting than the Sony DSC-F828 at the same indicated I SO (this is exactly the same as our experience when we compared the 300D to the PowerShot G5). Thus the EOS 300D's ISO 100 would be equivalent t o an ISO 160 on the DSC-F828 (although it doesn't actually allow that se nsitivity selection). Red|Green|Blue channels As you can see from the crops above and the luminance noise graph below t here is simply no way any prosumer level digital camera with such small sensors can achieve the low noise levels of a large digital SLR sensor a t higher sensitivities (because of its considerably larger well size, mo re signal = much better S/N ratio). At ISO 800 the EOS 300D has less noi se than any of the prosumer / compact five megapixel digital cameras bel ow have at ISO 200. Indicated ISO sensitivity is on the horizontal axis of this graph, standa rd deviation of each of the red, green and blue channels (normalized) ar e on the vertical axis.
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