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I thought that those with the big expensive gear might find my research helpful.
Amazon.co.jp still carries a number of items that you can't get elsewhere.
** The rear FA* CPL for the FA* 300/2.8, FA* 600/4 and FA* 250/600/5.6:
Amazon.co.jpF PENTAX ‰~•ŒƒtƒBƒ‹ƒ^[ FA~ (ƒP[ƒX•t) 35184: ‰“dEƒJƒƒ‰
At the time of this writing, they are still in stock.
** The official Pentax 112mm SMC protective filter, for the F*/FA* 250-600/5.6, FA* 300/2.8, A* 600/5.6, and A* 300/2.8 :
Amazon.co.jpF PENTAX SMC PFƒtƒBƒ‹ƒ^[ 112ƒ~ƒŠ 35621: ‰“dEƒJƒƒ‰
There is also a more reasonably priced multicoated 112mm filter on Amazon US:
Amazon.com: Marumi 112mm 112 MC UV MCUV Multi-Coated Filter Japan NEW: Camera & Photo
** The official Pentax 145mm SMC protective filter for the A* 400/2.8:
Amazon.co.jpF PENTAX SMC PFƒtƒBƒ‹ƒ^[ 145ƒ~ƒŠ 35623: ‰“dEƒJƒƒ‰
I shopped a lot for a substitute on this one. I could not find *any* other 145mm filters.
** The official Pentax 150mm SMC protective filter for the F*/FA* 600/4 and A*1200/8:
Amazon.co.jpF PENTAX SMC PFƒtƒBƒ‹ƒ^[ 150ƒ~ƒŠ 35624: ‰“dEƒJƒƒ‰
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Now, you can't order any of these items from Amazon.co.jp unless you are in Japan, so you'll have to find someone to broker the transaction for you. One of our PF users, @Tom1803:
View Profile: tom1803 - PentaxForums.com has been extremely helpful in brokering a couple of these transactions for me.
I hope this arcane knowledge has been helpful to you. If so, click the little thumbs up button over on the left. If not, well <shrug>.
Last edited by Clinton; 10-04-2011 at 05:31 PM.