A Jim of All Trades

Posts Tagged ‘zoom lens

A New Camera Lens

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About two weeks ago I picked up a new camera lens and, though I haven’t had a lot of opportunity to use it, I wanted to post about it.

The lens is a Tamron AF 28-300mm F3.5-6.3 LD Aspherical IF Marco.

To simplify that a bit, it’s an auto focus zoom lens that has a fairly broad zoom range, meaning it can be used for taking pictures of things both fairly close and far away. This is an older film lens that’s still compatible with digital Pentax SLRs, the model was introduced around 1999 but I don’t know how old this specific one is. The longest zoom lens I had before is a 70-210mm so, though it’s very good lens, it doesn’t quite have the reach for shooting things further away, nor is it good for closer work. Aside from that I only have the standard 18-55mm kit lens (again, a decent lens, but no zoom at all really) and some prime (non-zoom) manual focus lenses, so I was wanting something auto focus that had more reach to it.  

I haven’t had much time to use it yet but here are some pics from just walking around testing it out one day. The only editing I’ve done to these is re-sizing them and sharpening them a bit to add back detail from the sizing, otherwise I haven’t made any corrections, or changed color, contrast, etc. These are all hand held shots as well, and it was very cold and windy when I was out (temperature in the 20’s (-4 Celsius, roughly) with 20 mph wind gusts!) so I’m sure there was a fair amount of shaking going on … not my finest work. My impressions of it and final thoughts are at the very end.

My thoughts so far:
I like it, but do have some mixed feelings as well… I love the versatility the range provides and think this will be an excellent lens for walking around with, but it is not incredibly sharp (I really like a sharp lens!) and the more you zoom, the worse the quality gets. That’s a trade off with zoom lenses, I know, but some are better than others. Also, zoomed the whole way out, and shooting into high contrast situations, you can find purple fringing (a purple outline) on dark lines in the photos, like on the pole holding the bird feeder with the snow as a backdrop, the black hook with the white spouting behind, or on the top edge of the building with the bright sky behind. I will learn what settings yield the best results in time to minimize this, and there’s always photoshop, but it is a weakness. It also simply isn’t that sharp at the long end. Another negative: it is basically worthless in low light; it has a terrible time focusing in doors and I had trouble getting anything usable.

That said, when pulled in just a bit from full zoom, the purple fringing basically disappears, and I was able to get a few “good” long range shots. For medium range shots, where I think it will see most of its use, I was able to get some shots I was really quite please with. For instance, the trash on the road and water cap above are reasonably sharp and true to color. The very last picture gave me a lot of hope, too; it was taken at full zoom, is reasonably sharp, and there is a fair amount of detail/sharpness with little to no fringing at all.

Overall I think it will make for a good all purpose walk around lens (how I do most of my shooting anymore), I didn’t pay much for it so feel like I’m getting my money’s worth, and it’s not like I’m a professional photographer and need the highest quality gear. Given more practice I’m hopeful that I’ll be able to get fairly consistent good shots with it, especially zoomed at the long end. I’ve also ordered a lens hood for it (a metal screw on hood from China for just $0.99 from eBay!), so that should help with the image quality and sharpness some, too. I really want to do more photo shooting this year so it should be put to a lot of use.

Thanks a lot for reading and happy shooting!

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Written by Jim

January 15, 2018 at 8:06 pm