slclick said:neuroanatomist said:Tamron has had QC issues in the past (e.g., second elements coming loose in the 24-70/2.8 VC). Assuming this review is of a pre-production lens (likely hand-picked for the reviewer), I'd prefer to wait for reviews of production copies of the lens, purchased through normal retail channels.
I do enjoy Dustin's reviews as he, like Bryan C. speak in real world terms and the review isn't coming off as a sales pitch. But I agree with Neuro and the off the shelf review vs promo-pre production review.
unfocused said:The sample images don't blow me away, but they aren't bad. Nothing that a little sharpening in post couldn't fix. For most of us, there really isn't any other choice. The only relevant comparison is between this and Sigma's "Bigma." If it outperforms that, then it's a winner.
Buschtrommel said:it might be a good lens, but the problem is the aperture of 6,3 at the long end. With clearly sunshine there a good results possible but try at bad weather to get a 1/1000 without pushing the ISO into highest heaven.
Also I think that this lens will not be very sharp at the long end and the long end is at least the reason to buy this lens.
Mt Spokane Photography said:I was a little bit concerned with the quality of the 600mm images. I know that things are reduced and sometimes images are distorted by reduction and jpeg, but I feel that my 100-400L with a 1.4X TC looks as good or better on my 5D MK III with a 100% crop.
The comment about AF stopping at times was a bit concerning as well.
Like others, I'd like to have a low cost 600mm lens, and I know there will be compromises, I want to better understand what they are.
Frank - Did you try a TC on the lens with the 5D MK III?
mackguyver said:The link is working now - nice review of the lens. It looks like the performance is good but not great from this review, but I'm sure it's going to be finding a lot of spots in amateur & birder's bags given the price and size.
I'll wait for the DxO / PhotoZone / LensTip, etc. results before passing any further judgement.
Mt Spokane Photography said:I was a little bit concerned with the quality of the 600mm images. I know that things are reduced and sometimes images are distorted by reduction and jpeg, but I feel that my 100-400L with a 1.4X TC looks as good or better on my 5D MK III with a 100% crop.
The comment about AF stopping at times was a bit concerning as well.
Like others, I'd like to have a low cost 600mm lens, and I know there will be compromises, I want to better understand what they are.
Frank - Did you try a TC on the lens with the 5D MK III?
Don Haines said:Dylan777 said:600mmish: Tammy $1,000ish Vs Canon $12,000ish ::
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Personally, I can't wait for this lens..... should I get one of these http://photojojo.com/store/awesomeness/iphone-slr-mount/ so I can use it with my iPod?
dlleno said:
Exactly... An updated 100—400 +1.4x is sounding a lot better to be. Sure it will be 2x maybe 3x the price..
mackguyver said:Neuro, I'm pretty sure the lens was released in December in Asia, so this should be a retail lens, but until we can read the review we won't know for sure.
hksfrank said:yep , they told me this was not cherry picked and just take out from those stock (not sure but i knew everything there will be golden sample and they knew how to cherry pick the good stuff) at least my copy on hand was looking like that
lescrane said:first, thanks Frank for making this available and answering our questions.
I think Frank shot these birds hand-held. If this is true, we cannot really benchmark the sharpness of the lens at all. The review is still valuable as a "hands on" assessment of how the lens will hadle in real life, but as far as sharpness, the user, and the conditions introduces a lot of variation. I personally will shoot with a monopod, rarely hand held. If I hold the assembly close to my body and breathe correctly, can usually go one stop slower than hand held.
I've been scouring the Chinese and Japanese websites and seen many bird shots, and they have overall been ok. As Frank and others said, it will help to have the "lab" tests to see how this Tamron compares to 100-400 Canon L, etc on the bench.
The autofocus speed is a big factor, esp. if you shoot BIF's, or other fast moving objects. If you tend to take fewer action pictures, you can live with slower autofocus.