Comments on: The EF Canon 140-400mm f/5.6 L IS II/III Lens https://www.birdsasart-blog.com/baa/2011/11/25/the-ef-canon-140-400mm-f5-6-l-is-iiiii-lens/ The blog of bird photographer Arthur Morris Mon, 02 Jan 2012 07:10:58 +0000 hourly 1 https://wordpress.org/?v=6.8 By: Task https://www.birdsasart-blog.com/baa/2011/11/25/the-ef-canon-140-400mm-f5-6-l-is-iiiii-lens/comment-page-1/#comment-153734 Mon, 02 Jan 2012 07:10:58 +0000 http://www.birdsasart-blog.com/?p=7636#comment-153734 The new 70-200 IS is the best yet and with the new 2XIII combo offers a 400 mm f5.6 capacity but I believe it falls short in regards to resolution (and certainly in focusing ability) on the the 7D (or any 1.6 X chip).
I have both lenses and have not tried the combo but here is an opinion that should be useful: http://www.juzaphoto.com/article.php?l=en&article=36

It may be that the 1.6 crop cameras are best relegated to only the 1.4X TC’s as auto focusing is considerably slowed down, even if the base lens is a fast one, when using the 2X TC’s.

If any lens needs updating it is the venerable 100-400 which is outstanding in terms of portability and focusing (as opposed to primes and TC’s). It is often loved or hated but often tolerated because it fills a gap that is absent competition save for price and considerable added weight. Have been looking for an update or a combination that would eliminate this lens but so far Canon has not come to the rescue.

]]> By: Arthur Morris/BIRDS AS ART https://www.birdsasart-blog.com/baa/2011/11/25/the-ef-canon-140-400mm-f5-6-l-is-iiiii-lens/comment-page-1/#comment-134172 Tue, 29 Nov 2011 03:17:54 +0000 http://www.birdsasart-blog.com/?p=7636#comment-134172 I like them all :). My least favorite is the last one; I included it because NIK Color Efex Pro’s detail Extractor improved it so vastly. artie

]]>