GrumpyGrandPa wrote:
LBA: Can anyone explain this please re how it starts?
I'm rather concerned as I have just purchased a Pentax-da 55-300mm f4.5-6.3 ed plm wr as it is a tiny bit longer and faster at focussing on my K-S2 and am now thinking about a 1.4 or 1.7 converter.......

I may be able to be treated though as I am sure I have read somewhere that a tc may not work with this lens !

loadoftripe wrote:
Thanks Peter for the info, I use TAV mostly as I'm mainly taking bird shots, will remember to use Av.

With regards to filters I have been looking on the tinternet and Lee look very expensive so unsure of the way to go, have actually got old Cokin resin filters from film days with adapter, but they are not large enough except on the DFA 100 f2.8 WR macro.
Do you go for separate filters or the kit with holder and adapter rings? that is the question. Seen the cheaper ones that have resin filters, and the expensive glass ones. But then again as money is not a problem thankfully (now retired) and you can't take it with you as they say!
Any recommendations anyone, I have seen K&F 62mm circular variable ND for £43?
Are K&F far superior than cheaper resin ones?
I have possibly 3 to 4 lens that could be used with ND filters; 2 x 82mm and 1 of 62mm and 1 x 49mm, or just use the one 62mm and save a bit of cash. The latter is favourite at the moment

Mike-P wrote:
Checked one is version 1, striped is version 2.

V1 can be very flakey with autofocus on Pentax cameras newer than the K-5II, they need an update which Sigma no longer do. I sold mine a few months ago, fabulous lens but if something goes wrong with it now you are stuffed as there are no parts anywhere.