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alexo

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Posts posted by alexo

  1. I also shoot pretty much the same way I shot during film days. There is a cost to digital and that is time in front of the computer. I don't want to have to go through 10,000 images to find 5 that I like. My goal is to shoot 5 if I want to have 5. However, I'm not that good and so, I wind up shooting about 20 - 30 to get the five I want.

     

    Sometimes I watch Youtube videos of the various metrosexual people showing off their overpriced equipment and I see them do an outdoor family shoot and they're firing their cameras like machine guns. I don't get that. You'll have to go through 5 or 6 images that are essentially the same. You can see what you're shooting before you press the button, so you pretty much know how good it's going to be. If you're not sure, take two, but to fire off a burst... not my thing.

  2. I currently have a Canon FD auto bellows, which I use with my Canon 5d2. I reverse mounted my FD 50mm f1.8 lens and the setup is pretty flexible and works quite well.

     

    However, I'm beginning to experience the limitations of this setup and I wanted to add tilting and shifting capabilities. I came up with a few options, all of which have their pros and cons.

     

    1. Tilt/Shift bellows. There are a number of bellows units, especially for medium format, which can be adapted for my setup. These run in the ballpark of about $650 and they would pretty much do what I need. However, my tilting options would be limited to macro
    2. Technical camera such as Cambo DB or Arca Swiss Universalis. This setup would allow me to have view camera functions at macro level and for general photography. However, it's EXPENSIVE and I wouldn't want to spend that kind of money if there are other options that would give me this functionality
    3. Adapting a 4x5 camera. This is a somewhat less expensive proposition than tech camera, but the limitations of this setup is that it's heavy, bulky and my choice of lenses for general photography would be limited.
    4. Mounting two tilt/shift adapters (one on the lens and one on the camera with bellows in between). This setup should theoretically give me independent front and rear standard movements. I say theoretically because I've never seen that done and I don't know how well it would work and if there are issues with such a setup. This setup would sort of be a compromise between macro and non-macro, with a macro setup having both front and rear movements and only lens movements available for general photography
    5. Using a TSE lens on bellows. I don't know how well that would work or whether reverse mounting a TSE lens would yield good results. This is one of the cheapest options, but there would be no rear movements for macro, unlike the adapter option (although I could also get a TSE adapter for the rear if that works).

    So, I'm not quite sure what to do. If anyone has had any experience with any or all of these options, or if anyone has anything else to recommend, I'm all ears.

     

    Thanks

  3. <p>The Mamiya C33 does not have interchangeable backs, but you can use 120 film by rotating the film pressure plate 90 deg. There should be an indicator on it.<br>

    <br />As far as the lens is concerned, just put it on, don't worry about it. The dial is for parallax correction. The 55 is wide enough where that's less of an issue unless you focus REALLY close.</p>

  4. <p>I've bought stuff from e-bayers from all over the world. I find the Japanese traders to be very meticulous in their product descriptions. They're very good in making sure that all the i's are dotted and all the t's are crossed. I would have no problem buying from Japanese sellers.</p>

    <p>I've consistently had problems with Chinese sellers. They don't pay attention to what they're doing. They send the wrong product or the wrong size or the wrong this or that. It's constant aggravation, so I avoid Chinese sellers like a plague, but everyone else is ok for the most part.</p>

  5. <p>I disagree with the notion of judging a sensor by the print. A RAW file is essentially the digital equivalent of a negative. So, if you want to judge the sensor, you have to judge it by the first generation output. A print is at least two generations removed from that. When you're looking at the print, there are too many variables that have gone into making it. You're looking at the paper, you're looking at the post processing, you're looking at the driver, on and on and on.</p>

    <p>From what I have seen, the tonality advantage of a larger format is a myth. What is that tonality a function of? If it's a function of pixel size, then my Canon 5d2 should have better tonality than any of the 50mp cropped MF cameras because it's got bigger pixels. You would also see a drop in tonality as the resolution increases. </p>

    <p>The tonality difference is the way that the manufacturers choose to render the scenes. The FF manufacturers go for the pop, a higher contrast look to give it a more "wow" effect, while the MF manufacturers go for a lower contrast to give it the sense of greater tonality. You can see that with the introduction of Canon 5D4, where Canon has started moving towards the "greater tonality" rendering, rather than the "pop"</p>

    <p>The same goes for noise. It's a choice of rendering. The FF cameras sacrifice some of the base ISO noise in order to boost low light sensitivity. Whereas the MF manufacturers sacrifice low light sensitivity for great S/N ratio at base ISO. Again, that's a choice of rendering, not a function of sensor size.</p>

    <p>MF digital allows us two very distinct and uncontroversial advantages that are the function of the sensor size:</p>

    <ol>

    <li>Greater resolution at a given pixel density</li>

    <li>The lens/camera geometry that results in shallower DOF, greater focal length at a given angle of view.</li>

    </ol>

    <p>That's where the advantages end. Therefore, in order to maximize and readily see the advantages of the MF digital cameras, you have to go to a MINIMUM 645 FF sensor. Otherwise, these advantages become a lot less apparent and you'd be hard pressed to tell an image made with a FF camera from the one made with a crop MF.</p>

  6. <blockquote>

    <blockquote>

    <p>In your experience, do 24 MP APS-C sensors match the image quality of 24 MP full frame? --Dan South<br>

    For the most part, yes. You have to stretch them pretty far to start to see the break down. --Alexander O</p>

    </blockquote>

    <p>Absolutely not! At anything over ISO 1600 you will see a LOT of difference in noise levels--not that I am recommending shooting at such high ISOs.<br>

    The new Fuji will show considerably cleaner files as the ISO increases. Resolution? Well, admittedly the resolution increase will not exactly be overwhelming, but the difference in noise will be very, very noticeable.</p>

     

    </blockquote>

    <p>Yeah, sorry. I should have qualified that all of my observations are made at base ISO. </p>

  7. <blockquote>

    <p>In your experience, do 24 MP APS-C sensors match the image quality of 24 MP full frame?</p>

     

    </blockquote>

    <p>For the most part, yes. You have to stretch them pretty far to start to see the break down. However, the FF 24mp sensors win out in terms of geometry, which I described earlier.<br>

    .<br>

    .<br>

    .</p>

    <blockquote>

    <p>Do 12 MP cell phones compete head to head with the Nikon D3?</p>

     

    </blockquote>

    <p>No. Read the qualifier I wrote. The pixels have to be big enough in order to control the noise level. Secondly, you can't compare the lens quality of a cell phone with the Nikon lens quality. So, the cell phone would not be able to compete even if it had a FF sensor.<br>

    .<br>

    .<br>

    .</p>

    <blockquote>

    <p>Have you worked with files from the Pentax 645Z or the Phase One and Hasselblad cameras that use 50 MP sensors? Can you confirm first hand that these cameras offer no image quality gain over the Canon 5DS R?</p>

     

    </blockquote>

    <p>Yes and yes. I've downloaded a number of RAW files from various 50mp cameras and I went over them with a fine tooth comb. I can honestly say that I don't find the Canon 50DSR files to be substantially different from Pentax, or Phase One crop sensor 50mp files.</p>

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