I have many Pentax DSLRs and still they are working well in my repair skill. Just go back to the past in minute, My first DSLR was not Pentax, it was Minolta. I have changed Minolta to Pentax for ’cause of loved Pentax philosophy – slow but good picture. At that time, My Pentax DSLR was ist*DS. It used SONY CCD APS-C sensor and my latest DSLR K-5, and it is still using SONY CMOS APS-C sensor ! Wow …
Actually I love my Pentax DSLRs and K-mount lenses even I using SONY NEX series – it is with SONY E to K mount adaptor – because I just like to shoot a picture with K-7 and K-5.
My lenses of above half are designed to use in FF sensor, because they are belong to Film SLR cameras. Still they are too enough shoot a wonderful pictures in modern DSLR and its sensor. I believe good pictures are not always belongs to good camera like our life pictures stored in our phones.
I know FF sensor must be better in taking pictures in overall for photographer. Absolutely I know how many things are comes to me if FF sensor equiped body came out. My FF size exposured surface correspond lenses will be more shine, as I hoped. I can gain more depth with proper Av than APS-C.
I am still love my old to latest DSLRs, but I will love to see FF sensor euqipped. This is my hope.