Type: Posts; User: wickerprints

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  1. FS: EF 70-200/2.8L IS USM (first version)

    UW12xx date code; barely used, in pristine condition--no cosmetic blemishes, save for the usual faint wear marks on the lens hood. Glass is clean, operates perfectly. All accessories and original...
  2. Yes, this happened to me about two years ago, but...

    Yes, this happened to me about two years ago, but I was quoted and charged about only $130. They replaced one of the sub-barrel components that got scratched up from twisting the zoom ring while...
  3. The entrance and exit pupils are not something...

    The entrance and exit pupils are not something that actually exist as physical objects. Only the aperture stop itself is a real object. The pupils are simply the images of the aperture stop as...
  4. A clarification regarding points 3 and 4 of my...

    A clarification regarding points 3 and 4 of my previous post: you must set up the correct EOS Utility preferences to perform these functions. You must connect your camera to the computer in order...
  5. I download directly from the camera, using EOS...

    I download directly from the camera, using EOS Utility, for a number of reasons:

    I rarely shoot with more than one CF card. Not removing the card from the camera means I minimize the risk of...
  6. Replies

    Re: EOS 1D X announced!

    And he will STILL manage to blow out the highlights and make it completely out of focus, despite the advanced AF and AE, because he's going to stick a Zeiss lens on it and shoot on full manual. I...
  7. Re: How many points do you have on Canon's new "Points Qualification System"?

    62, but if I get around to selling two of my lenses, that would bring me down to 46.
  8. Replies

    Re: New Lytro camera

    I'm surprised at how enthusiastic some people are about this camera, despite no information being given about the imaging resolution. Some idiots actually had the nerve to say the imaging resolution...
  9. Re: is it a good idea to purchase canon lenses in shanghai?

    I would NOT do it. First of all, you won
  10. Replies

    Re: F-Stop Blues

    If it were truly "useless" in the sense that the light from marginal rays at f-numbers faster than f/2 are lost at the sensor, you wouldn
  11. Re: Q: What is the terminal velocity of a 24-105 f/4 L?

    I calculate that the terminal velocity of an EF 24-105/4L IS USM under these circumstances is roughly 72 miles per hour, or 32.23 m/s. My calculation is based on the following assumptions:

  12. Re: Canon EF 400mm f/2.8 L IS II USM Lens ISO 12233 Crops

    From what I can see in the charts, the conclusion I draw is that the extender itself is what facilitates the performance gain. Compare the 2x II against the 2x III, and you can immediately see a...
  13. Re: Daniel did not read Nikon's comments about its imaging product

  14. Re: Problem with chromatic aberration with my new Canon EF 85mm f/1.8

    In a nutshell: yes, it is normal for this lens, as well as almost any fast-aperture design (i.e., faster than f/2). It
  15. Re: Maximum Magnification - different for EF lenses on crop bodies?

    No. (Lateral) magnification is image height divided by object height.

    Loosely speaking, the size of an object in the scene as projected by the lens, divided by the actual size of the object, is...
  16. Replies

    Re: Canon f1.8

    I went from using the EF 85/1.8 USM to the EF 85/1.2L II USM.

    The 85/1.8 did 95% of what I wanted. I still sometimes regret selling it. My copy was remarkably sharp and there really wasn
  17. Replies

    Re: EF 24-70mm f/2.8 L USM - No IS

    First, you may want to go back and read my previous post.

    Second, by your reasoning, why shouldn
  18. Replies

    Re: EF 24-70mm f/2.8 L USM - No IS

    Image stabilization was invented by Canon and was first released into production in 1995 with the EF 75-300/4-5.6 IS USM. The technology proved so useful that it was soon implemented for the EF...
  19. Replies

    Re: EF 24-70mm f/2.8 L USM - No IS

    There are no lenses faster than f/2 that have an IS unit. The sole exception is the EF 200/2L IS. All other lenses with IS are f/2.8 or slower. This in itself makes the 200/2L a rather remarkable...
  20. Re: Just a reminder of the importance of protection

    Well, we don
  21. Re: Any Ideas On How To Remove Dust From An Image??

    If the spot shows up when that specific lens is mounted, but not when using other lenses, then it must be dust in the lens and not the sensor. Not many people realize this, but dust in the lens *can*...
  22. Re: what are the fastest-focussing canon lenses out there?

    The AF speed of a lens depends on multiple factors:

    The body used: 1D-series bodies process AF information faster than lower-end bodies, and therefore the focus adjustment is more responsive.
  23. Replies

    Re: Deterring Crime

    A gun is not a good deterrent for robbery. It
  24. Re: Can someone explain what a 50 or 100% crop is?

    An x% crop is simply a portion of the original image that has been resized to x% of its original pixel dimensions.

  25. Replies

    Re: Portrait setup.. Help!

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