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skid00skid00 wrote:
Adding IS to the 400 would double it's cost. The cost would go from ~$1000, to ~1500, demand would drop, and Canon would charge ~$2000 to pay for retooling, and still make a profit.
Adding 4-6 additional lens elements ALWAYS decreases optical performance. You can make up for that by more spendy lens glass, polishing, and coatings... Which makes for a higher price, which decreases sales, which increases price.
I get 70% pixel-sharp shots with my 400 AND 1.4x TC, on a 1Ds, handheld, at 1/200 second. Here's some other handheld shots: http://home.earthlink.net/~ladlueck3/sharp560.htm
Did adding IS to the 300/4 double its cost and significantly affect its IQ and weight? What about the 500+600mm's? What about the 70-200/4IS and the 18-55IS...are they not worth the extra cost for better IQ and versatility? As I stated prior, modern IS systems are now cheaper to produce and while many still have the notion that it adversely affects IQ and weight that notion is simply wrong. New technology always adds significant cost to a product--as time passes and that technology ages and becomes more common the overall cost drops and more lenses are integrated with the technology (the same thing happened when AF, USM, and SP coatings/elements were developed). This can be seen in Canon's most recent lens releases--70-300 DOIS, 400/4 DOIS, 70-200/4IS, 24-105IS, 18-55IS, 17-55IS, 17-85IS, 70-300IS, 55-250IS, 200/2IS, 800/5.6IS. The majority of recent glass is fit with an IS system. See a pattern? Not all of it is cheap, but the price does not reflect only the addition of IS--IQ has also increased as well. For example: the 70-200/4IS is double the cost of the non-IS because of the lenses IQ superiority compared to the non-IS ver. ONTOP of the addition of IS--not only because of IS. If you honestly believe Canon will not update or replace the 16 year old 400/5.6 with an IS variant (be it f/5.6 or f/4--which there is, just not in production) in the near future I'm sorry to say you are being a bit naive.
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