Originally posted by RaduA In all honesty I don't know how you come up with numbers like this and you write them with a straight face. 100 to 1 for the 60-250 vs 200Macro? I highly doubt that but anyway you didn't seem to read my post although you quoted it. The design is payed for except for mechanical changes that are by no means as important as optical design (so no need to dissipate a huge development cost in a certain number) and by your own admission to manufacture it it would be easier. And yet the introductory price for the 60-250 is 1100 Euro and the only logical conclusion must be that a hypothetical DA* 200/4 would cost less.Radu
You conclusion is far from logical. The price you cite is less than the lens costed close to ten years ago when it was certainly sold at a loss. Counting for inflation, higher yen and Hoyas focus on profitability you can double that unrealistic price at least.
Your idea that there are limited developing cost for an "old" design is false. Developing the optics is not what cost money; after all almost all optical designs are already done, and anyway done by a computer program. What cost money is starting remaking and retooling the lens elements and various mechanical parts of the lens. This for a lens that will sell in extremely, possibly unustainable numbers from a profit perspective. The fact that the complex focusing mechanism of this lens is part of its macrocapabilities, means that redesigning it AF system probably demands a complete mechanical and following optical redesign. This is why the A* 200/4 couldn't be used as a basis for the FA* version because the old optical/mechanical construction was not mechanically compatible with AF.
In fact, I believe this very lens is the least likely candidate for DA* treatment for these reasons. Besides, a lens equivalent to the 200 Macro on FF for APS will be a 135/4 macro; in reality this will be a 135/2.8 macro. It will only need to go to 1:1,5 magnification to give the same magnification as the 200/4 was designed for for FF. Such a lens would be a fraction of the price and sell a lot more...