Question for Pentax shooters on Teleconverters

[Paul2660]

Pentax makes a 70-200 and the 150-450 both full frame lenses.

Does anyone know if there is a teleconverter 1.4x that will work on either of these lenses? 

I found a 1.4x from Pentax.

http://www.bhphotovideo.com/c/product/1029081-REG/ricoh_37962_1_4x_hd_da_af.html

Not sure if this will work on full frame lenses.

Paul C

[Ray Cox]

Paul

You may find this thread from Pentax Forums to be your answer.

Ray

http://www.pentaxforums.com/forums/10-pentax-slr-lens-discussion/323664-pentax-70-200-f2-8-tc.html

[Paul2660]

Ray,

Thanks, looks like for now, a no go for full frame, maybe in the future Pentax will come out with a solution. 

It's too bad that Sigma chose not to make their 150-600 in the K mount in either the contemporary model or the sport.

Paul C

[mjrichardson]

Paul

There's another thread on teleconverters on the K1 with some examples here..

http://www.pentaxforums.com/forums/190-pentax-k-1/321600-ff-teleconverter-k-1-a.html

Would be interested to hear your thoughts on the K1, there is a body waiting for me at my dealer, just trying to decide if it's worth it, the lenses bother me.

Mat

[skierd]

This is a good thread for the K-1 and long lenses/TC's.

http://www.pentaxforums.com/forums/122-lens-clubs/55946-300mm-plus-lens-club-discuss-your-long-lenses-1479.html

Might check here too:
http://k-1-lab.com/en/

95% sure the HD DA 1.4x TC is full frame compatible, or close enough for govt work.  Worst case, you turn off crop mode and deal with the vignettes in LR or PS or with a crop.