Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- User Rating: 
Summary for Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- AF does not work with Nikon D40/D40X cameras
Notes on Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- I haven't used long range lenses before and did not realize how challenging the job is. However the lens is very sharp. It has quite noticable chromatic abberation issue. The main part is that it's not designed to work with Nikon D40/D40X cameras (that's what I have) as their autofocusing mechanism is different and requires special kind of lenses. I did not know about it before I purchased the lens. Amazing thing is - no ad mentions it. So I focus it manualy. It's an extra challenge as under most conditions depth of field is very shallow and using the viewfinder you cannot tell for sure when your subject is really in focus. It only shows later when you review your shot in details. Long range shots must be taken from a tripod - no VR. You get what you pay for. I think it's OK if you are planning to use it in a bright day light for remote static scenes.
Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- User Rating: Summary for Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- Tamron non AF
Notes on Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- Great lens for the price, but one thing. i was under the assumption it would be auto focus, but does not contain the essential Af motor needed. If your camera has the AF motor inside then you'll be fine.
Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- User Rating: Summary for Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- Good image quality for the money
Notes on Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- I enjoyed this lens for awhile, after selling my Nikon 80-400mm VR because it was huge and heavy. I initially tested it out, using the "macro" abilities quite a bit, but later found that all I needed in my everyday use was focal length. Sure, there are shots I could get at 400mm that I couldn't quite get at 300mm, but 95% of the time 300mm was the perfect length.
This lens was very handy on a trip to Hawaii, but I have since sold it and moved up to the Nikon 70-300mm VR (now that it is quite a good deal on Amazon), so I will make some (hopefully helpful) comparisons between the two.
Pros:
* Light weight, low cost - value is definitely the strongest point of this lens
* Sharp at 300mm (should always stop down to f8 or f11 for best results here)
* Great color (like most Tamron lenses)
Cons:
* No VR (becomes helpful at longer focal lengths)
* Auto-focus can be slow, almost unusable in low light
* Image quality not quite on par with the Nikon 70-300mm VR
I say "not quite" because there is nothing wrong with the images I took with this lens. They are sharp (for the most part) with strong color, no problems really, but when compared to the shots I've taken with the Nikon 70-300mm VR they are not quite as impressive. It's a subtle difference, but there is a definite advantage to the glass used in the Nikon lens. (NOTE: I am only talking about the VR lens, not either of Nikon's less expensive 70-300mm lenses.)
For my use, the VR of the Nikon is a huge plus and has helped me get some shots I could not get sharp otherwise. The Nikon lens is much heavier, though, and carrying it around for half a day on a recent trip left my arms rather tired.
I would recommend the Tamron for someone wanting a light-weight travel lens on a budget. You will get more than you expect out of this low-cost lens.
I would recommend against it if you shoot mostly in low light situations, as the Tamron's weakest point is its problems focusing in low light.
Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- User Rating: Summary for Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- You get more that what you pay for . . .
Notes on Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- . . . when you buy this light-weight workhorse telephoto. Well, I call it a workhorse because over the course of the past year I have used it extensively. It was in fact my first telephoto lens and it taught me a lot about depth of field and composition. The close-focusing ability with the "macro" switch is very handy and a joy to anyone who likes flower close-ups. The bokeh on this thing is buttery-smooth, and it's pretty sharp up to about 185mm, the shortest setting you can have with the macro function on (beyond that, sharpness drops off). In all, this is an excellent bargain and a decent performer.
Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- User Rating: Summary for Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- Noticeably better than its predecessor version
Notes on Tamron AF70-300mm F/4-5.6 Di LD Macro Lens ...- I do find better image quality in this A17N version over the 572DN, allegedly due to better anti-reflection coatings.
Another improvement is cosmetic, really.. covering of the zoom ring is much nicer looking than the rubbery armor-like solution of the older model.
Both models, however, share one annoying trait, no doubt common to newer mechanical linkages of lighter-weight components?: With just the wrong bump, the zoom ring can come uncoupled. The results with both lenses has been that, until sent for repair, zooming has to be push-pull of the front end of the extended lens barrel. More disturbing, however, is that the autofocussing also starts to evidence sounds of minor binding, so that the motor is working harder in certain ranges. That concerns me if it could lead to camera AF motor burn out, or linkage failure.
For intended use and for the price range, the lens performs wonderfully well, and I enjoy the 1:2 "macro" usage I've gotten out of it. Reviews I've read tout this lens as optically pretty much equal or better than the Nikon version of it, and while I cannot directly compare, I wouldn't argue otherwise from the images I've gotten.
I can recommend it for a carry-around lens for easy-access-nature use, whether flora or fauna, at least on digital slrs with good noise handling at higher ISO's and/or in ample light.
