Originally posted by thibs However, I never saw a Pentax ad with a third party lens.
It doesn't that because YOU didn't ever seen a Pentax ad with a third party lens that:
- it never occured: there proof here it does happen
- it is a bad strategy.
Lastly if I recall it is not a Pentax ad but an ad from the distributor that sell other brand. For them it is obviously good to sell their products. Maybe they got good prices on both, maybe they have to many and want to get rid of them. Maybe they want to promote they can have very actractive deals.
Does this serve Pentax anyway? For sure, if one buy the pack, Pentax get the revenue on K-S1 meaning money and also more "Pentax" gear out in the wild. They also show the Pentax name anyway.
Would it have been better for Pentax if the offer was with a Pentax lense? Possible but maybe the price could not have been the same with comparable lenses like 18-135 or 18-270. Obviously the ads make a point on fantastic value. So the ad could not target the same segment with Pentax lenses and possibly it would have been a deal breaker and we would have seen instead an ad with a Canon Rebel and a sigma. That for sure wouldn't have helped Pentax.
We could argue a Pentax lense would have helped Pentax more. This would be true if the expected revenue for Pentax would be better this way. This is far from being certain and we are not the one that can juge that.
As if Pentax should prevent that to happen I'am not sure to understand. Many merchants feature Pentax from time to time and they even have kits including sigma/tamron lenses from time to time. I saw this on Amazon for example. Woul it benefit Pentax to alienate their channel just for "purity"... This is counter productive.