Originally posted by Lukasabs Dear Forum-members,
I currently own a Pentax K-70 together with my beloved "HD PENTAX-DA 16-85mm f/3,5~5,6 ED DC WR" lens.
As I will visit multiple national parks in the united states in a couple of months (Yellowstone, Arches, Bryce Canyon, Grand Canyon, Zion, etc.), I want to buy a zoom lens for better wildlife and nature photography.
I´ve been researching for quite some time now and for me it comes down to either the "HD PENTAX-D FA 70-210mm F4 ED SDM WR" for 1200$ or the "HD Pentax-DA 55-300mm F4.5-6.3 PLM WR RE" for less than half the price. I´ve read many reviews (also here in the forum) and am torn between those two lenses. I am fully aware that the 70-210mm lens is designed for full frame cameras, but according to the in depth reviews it works very fine with APS-C as well.
I am simply wondering if my Pentax K-70 can use the full potential of the 70-210mm lens. Or would it be wasted money in your opinion and I should go with the cheaper 55-300mm lens? If the 70-210mm lens is still significantly better on APS-C Systems, I would be willing to pay the higher price.
I would really appreciate your opinions and experiences on both lenses.
Thank you very much in advance,
Lukas
Greetings Lukas from the neighborhood. Your "kit" lens is a superb choice for starting out, it is one of the sharpest zoom lens, it will be great for landscapes and allaround snapping. Don't worry if your shots turn out less than expected, just shoot some more and try to find interesting stuff to show off at home. Do not be afraid to go full tourist while being a tourist.
For wildlife those two lenses (55-300 and 70-210) are somewhat usable, the 55-300 PLM is a bit darker than the earlier versions, plus I don't trust collapsible designs. The 70-210 is optically superb but f/4 and weighs the same as the Tamron 70-200/2.8 IF Macro. I would also consider the DA* 60-250/4, superb optics, more focal length and can play well with the DA 1.4x TC. I'm not going to recommend the 150-450 because no matter how nice it is it costs way too much for something that is essentially a Bigma.
For comparison, my route for wildlife was starting with a disappointing DA 50-200, then getting the Tamron 70-200/2.8 and DA TC, then getting a Sigma 50-500 "Bigma" (big mistake, baaaad bokeh, very heavy, dark) and quickly replacing it with a DA* 300/4.
The 300/4 and the 1.4x TC was my main wildlife setup on the K-3 and now on the K-1.
What you want is good optics with bokeh rendition that doesn't make you puke and light enough to be able to carry it around all day.
Also by visiting national parks, be aware there will be rules for photographers, some parks don't allow tripods or long lenses (or groups over a certain number), also they might prohibit photography at certain locations, lookout points.
Make sure you carry enough water, a compass and map, and make sure your phone is charged to be able to call emergency or check GPS on map. And please don't litter.