Originally posted by selar I have shown 3 instances of where the lens elements were reduced, in each case referring the same table, the quality rating dropped.
I am not sure how I can prove conclusively that the lens design was changed to accomodate miniaturization, when I am not privy to internal information at Pentax. The number of lens elements may have been dropped for a number of reasons including flare, cost etc., but at the time the need of the hour was to make the body and lenses smaller to compete with the OM1N, therefore it is the most logical explanation.
three isn’t enough, and wouldn’t take into consideration all the variables that come into play testing an old, likely used lens. it certainly wouldn’t address simple sample variation. thank you for proving my point with the above statement. you don’t know, and you cant prove it. and thats exactly what I have been saying, because there is no direct evidence to say thats the cause. thats why I said you shouldn’t be spreading such baseless information, as its not good for the community. they didn’t need change anything to make them smaller, my point about going from the smaller Takumars to the larger K series back down to the M series proves that the size overall can be changed and allow for the optical formula to stay the same. that means that you cant even prove that the changes made were for miniaturization for competing with olympus or anyone else. they already had the knowledge and capability to make the lenses smaller without making any changes optically. im not saying that ultimately they didn’t. maybe they did, but you haven’t proved it. you also haven’t proved that the changes made resulted in lower performance across the board. the biggest way to ‘miniaturize’ would be to simply make the lens slower, and they did that in many cases such as the 85mm going from 1.8/1.9 to f2. this indeed makes a lens smaller and asahi optical did this often well before the M series to have ’standard’ filter ring size across its lens lineup, not really for miniaturization for competition.
so no, it mustn’t be the most logical, at least not from what I see. however, even if it were true in regards to changing optical formulas to make lenses smaller, that doesn’t actually prove or even account for lower performance optically, and since Ihave stated already the overall quality is different that simply testing resolution, your original statement is baseless and should be retracted. i haven’t anything else to say about it all.