Originally Posted by neuroanatomist
I guess I am going to be able to make that comparison, I just ordered the 1D Mark IV [*-)]
I guess I am going to be able to make that comparison, I just ordered the 1D Mark IV [*-)]
WooHoo! Congrats!! Can
I will get you some close ups of the divorce papers when the wife finds out[:^)]
Maybe I can slip it in with my other cameras and she won't notice.
Thanks for the response John (Fast Glass), but perhaps I wasn't clear. I wasn't trying to compare using an extender vs. cropping, I was referring to the additional expense that might be incurred by requiring a 400mm f/2.8 with the MKIV, as opposed to a300mm f/2.8 + 1.4X extender on the MKIV which would cause a loss of one f-stop, as well as slower AF by 50% in the latter scenario.
When I put my 1.4X extender on my 300mm f/2.8L, it becomes a 420mm f/4, so I lost one f-stop on the same camera. The aperture is now one stop smaller and my speed is one stop slower. That's what I was trying to imply.
Rich
Hey Rick., Congrats! [B]
That's awesome, you're going to love it.
It's really very, very, nice!!
Rich
HiRich,
The7D was supposed to have a advantage in reach and noise because you loose one stop with an extender with the same lens in your preivious post.A 400mm f/2.8has more reach at the same apetureas the 300mm f/2.8. My point was that the 1D IV has the advantage in noise/reach. I was in a hurry when Ityped that postand I should have noted cropped whether with a 1.6 crop camera or in the post.
The intonation of this post sounds like I am anoyed, I am not at all. Please don't take it that way.
Cheers[],
John.
Hi John,
Thanks for the clarification, however I did not take it that way at all, as I always enjoy reading about your technical side of things.
Cheers,
Rich
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