Is this a prototype of the smc Pentax-A☆ 600mm f/5.6 ED [IF]?: Pentax SLR Talk Forum: Digital Photography Review
![SMC Pentax-FA* 250-600mm F5.6 ED [IF] Reviews - FA Zoom Lenses - Pentax Lens Reviews & Lens Database SMC Pentax-FA* 250-600mm F5.6 ED [IF] Reviews - FA Zoom Lenses - Pentax Lens Reviews & Lens Database](https://www.pentaxforums.com/lensreviews/data/44/SMC_Pentax_FA-star_250-600mm.jpg)
SMC Pentax-FA* 250-600mm F5.6 ED [IF] Reviews - FA Zoom Lenses - Pentax Lens Reviews & Lens Database
Is this a prototype of the smc Pentax-A☆ 600mm f/5.6 ED [IF]?: Pentax SLR Talk Forum: Digital Photography Review
![Pentax smc FA 250-600mm f/5.6 ED (IF) lens reviews, specification, accessories - LensBuyersGuide.com Pentax smc FA 250-600mm f/5.6 ED (IF) lens reviews, specification, accessories - LensBuyersGuide.com](http://lensbuyersguide.com/img/300/857.jpg)