Douglas L wrote:
Too many images to post, I did a fairly comprehensive comparison (indoor) between the 70-200 and the 100-400 on my A1 on tripod. Here is my observation:
At 100mm (f4.5, f8), 200mm (f5.6, f8), the 70-200 is sharper pretty much cross the board
At 280mm (f5.6, f8), 400mm (f5.6, f8), the 100-400 is sharper than the 70-200 +TC
Bear in mind these were done at pixel peeping level, so the difference is hard to tell at normal viewing.
At the 100-400mm's MDF, the 100-400 is sharper than the 70-200 with the 2X TC.
The 70-200+2X TC is narrower than the 100-400 at 400mm in angle of view.
The images from the 70-200 seem a bit cooler in terms of white balance.
I will do a comparison outdoor when I get around to do it.
Thanks for doing the comparison, Doug! It has always been my point that if one needs a 300/400mm focal length then you need to use a 300/400mm lens or a zoom lens that covers that focal length NATIVELY. You can get by using a TC, especially the 1.4X TC in a pinch but keeping either TC, especially the 2X TC to get the focal length what you need on a regular basis, regardless how good the 70-200mm lens is, you are may be disappointed. With that said, if you stop down 2-stop or so, which we normally do in landscape/urbanscape photography, the difference will be less noticeable. I will be doing some cityscape with that lens, with and without the TC.
I sold my 100-400mm lens though since I will fall back on my 200-600mm lens.
Dec 15, 2021 at 08:18 PM
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