Originally posted by normhead Cheap stops at 300mm. Expensive starts at 200mm.
That's spot on
Anyhow, thanks all for you thought and experience. Currently I tend to go for two option and probably my final decision will be dependent on second hand availability
1. Tamron 70-200mm F2.8 with a 1.4x or 2x - this way I could get some extra reach i would need during the trips and also use the lens afterwards for my daily needs.
2. Try to find one of the mentioned Sigmas second hand - with 400 or 500 tele end reach.
somehow i am not too convinced about the contrast, IQ and performance of the cheaper end consumer zooms, including 55-300.
Thanks again,
Davis
---------- Post added 10-21-15 at 07:32 AM ----------
Originally posted by cbergy Is the Bigma 50-500 still available for Pentax mount?
I guess not - i have only seen second hand versions.
Originally posted by stemked But anyway I have run through several lenses over the years and can give you some quick input.
thanks for such a great input. you have had a lot of testing
I am considering thought Sigma 150-500 type as we will be mostly traveling by car and i will have trip with me
so the weight is not the main constraint.