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pok_hon_wally_yu

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Posts posted by pok_hon_wally_yu

  1. Seriously, why do you want to spend your money on a lens? If you cannot answer it convincingly, I would suggest you to spend those 300 dollars on a tripod, film, and/or a flash instead. Have your shots been limited by your 50mm f1.8 lens?

     

    My general advice: Don't spend money on photo gear just because you have the money...

     

    Price at B&H for the two lenses are as follows:

    28 f2.8: $160

    28-105mm f3.5-4.5 II: $230

    If wide angle is what you are looking for, you may also consider the 24mm f2.8. It's $290 is still below your $300 budget.

     

    I shoot a lot of landscape and cityscape and I like my 28mm f2.8: it's light and very sharp. CA and SA are minimal. It does not have USM but focusing is still very fast and I won't say the focusing mechanism noisy at all. In addition, the 28mm lens shares the same filter size with your 50mm len, in case you have a polarizer or some other filter. (The zoom has a 58mm filter size).

  2. The third-party flashes I mentioned (Vivitar, Sunpak, Metz, Quantum) have sensors on the flash to measure flash exposure. You tell the flash the aperture and ISO, the flash will provide enough flash exposure for the subject. That's why we call "auto" flash exposure. Certainly all these flashes can be fired in full manual mode.

     

    Your Canon 580EX does not have an external sensor for auto exposure. That's why I can only use in manual mode when using with non-Canon cameras.

     

    Since Vivitar, Metz 45, and Quantum can be powered by high-voltage source, you may want to check with Jackrabbit for flash compatibility.

  3. Hold it... I don't think 645 super has flash-TTL at all. The suggestions above will work as long as you are fine with auto settings.

     

    Your 580EX will only work in manual mode when using with your 645 Super. Basically, any auto flash will work fine. If you don't want to spend a lot of money but still get good results, Vivitar 285HV or Sunpak 383 will be fine. I use the Vivitar mainly for fill flash. It's very easy to use and auto exposure is very accurate.

     

    If you want to spend some big money, you may try something like a Quantum Q-flash or Metz 45/60 series. Quantum Q flash only works with their turbo battery. Fortunately, you can also get a cable to connect the battery to your 580Ex flash.

  4. Did you get the PB-E2 or th E1 booster? In either case, $850 is still a very good deal for a 1v. I would suggest a test drive to see if the camera functions properly. If so, you may not need a CLA immediately. The camera is built like a tank. If the previous owner(s) handled the camera properly, the camera will still have a lot of millage to go.
  5. 1. A standard 52mm lens cap will work.

     

    2. I am still waiting for an answer. I asked the same question before and didn't get the answer...

     

    3. So far I do not have any problem with 220. In fact, you get 32 shots with a 220 roll.

  6. Definitely a much bigger "WOW" with MF slide projecting!!!!

     

    However, there are two basic issues you need to face with MF projection:

     

    1) Getting a MF projector: New projectors can be very expensive. You may want to hunt for used projector. I got mine for about 400 dollars and it works very well. If you see some vintage MF projectors, make sure you can get a replacement bulb since some old light bulbs for projectors are not available anymore.

     

    2) Slide Mounting: You need to do the slide mounting yourself. Fortunately, it can be done without any specific machine. All you need are a clean working environment, a pair of clean hands, and a pair of scissors.

  7. Too many factors can contribute the results you get:

     

    - Improper procedures: I cannot even tell from the picture if the map is parallel to the film plane. Also, is the map itself flat at all? Do not be defensive and just say I KNEW it's flat and properly setup by visual inspection...

     

    - Lighting: the scene is simply too contrasty for a lens test. The bright background can greatly affect the meter reading. If your test target is the map, fill the frame with the map if you can. In addition, slides like this can be tricky to scan.

     

    - Scanning: Scanner IS NOT a "mega"-maginifer as some claimed. Scanner quality and your scanning workflow can make things better or worse. Try evaluating your slides by viewing it through a loupe and/or projecting it onto a screen by a slide projector.

     

    - The Cropping: Isn't the cropping a bit too small?

     

    With all these uncertainties in the setup, the test cannot be conclusion espeically at large aperture since the DOF is extremely swallow.

  8. The sync speed of EOS 3 is 1/200s. However, the shutter will NOT fire if the shutter speed is faster than 1/200. Instead, you will see is the shutter speed in the viewfinder blinks.

     

    The 550EX is capable of high-speed sync with shutter speed up to 1/8000s. However, it's needed to be turned on manually.

     

    Back to Sandra's question: The P mode will select a set of shutter speed and aperture for you. Take a close look of what the camera had selected for you. This setting will determine your background/ambient exposure. The aperture selection will be limited by the maximum aperture of your lens. The shutter speed will be between 1/60 (if my memory serves correctly...) and 1/200 (X) when an EX flash is used. As I said earlier, if 1/60s @ f(max of your lens) is still 4-5 stops or more underexposed for the background, your background will be completely dark. Adding insult to injury, if your flash does not fire or you are not waiting for the flash to charge, your foreground will be completely dark also.

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