why this heading .... Simply because a comparison of Seben manufacturer is certainly more helpful than to measure with an objective to another company with a red ring .... and I see from old to new have, I want to start times. I myself have still 28-75 thus quasi the vVorgänger to the recent 24-70 with stabilizer and USM. In the beginning I really had to deal with the lens (28-75), it seemed to me like a book that you have not read and therefore does not know what it says how to treat it needs so that you can come to me useful results. The 28-75 (at least my copy) had behaved at the beginning like a donkey störischer with 7 seals, .... it had a clear focus and the front as well as with any image. Fortunately, I have the opportunity (EOS 6D) to trim the fine adjustment with respect to AF. After a few days with test shots I had geschaft to minimize it to the Committee on ca 95-98%. Unfortunately, as of yet, and always something rather blurry looking shots with regard not 100% sitzdendem AF doing that but certainly objective even in the Canon case. Now I've bought the new 24-70. Conclusion At first glance, larger, bulkier, heavier, fine workmanship, very much like the old 28-75. Unfortunately, even this objective, at least on my 6d a front focus, which is less than the 28er, but clearly visible though. But on the fine-tuning of this gene defect could be remedied quickly! In visual comparison I've made at full aperture, the new lens is visibly sharper, contrast and color rich !. The old lens records a bit softer and a touch Teilwiese faded from. I would not say that it is all the galaxies, however, the difference in detail is clearly visible now. In this regard, Tamron has worked considerably on new Obektiv ... compliment. The AF is in my opinion not only by its USM technology significantly quieter, it is also more accurate, both in dark subjects as well as in the overall Trefferqoute! For stabilizer I would like to write anything, he is part of it, works, is serving. I myself would not have needed since the lens considerably harder than the old one has become ibautechnisch. Of course, if I had written the above, one should not compare canon red ring there, so I have to say though, the Tamron's response to the competitors product This model is certainly here. That is why also the stability and the new focal range all the times the way it should be. The old zoom range had me personally like a little better, 24er weitwikel on full frame can then something seem very far away, but the way it is.
following + and -
+ Better picture quality than the previous 28-75 (distinguished sharply from, starting Offeblende) + Better contrast than its predecessor + Stabilizer + Dustproof + Better remuneration of the front lens than its predecessor + USM technology
- Significantly heavier than its predecessor - Significantly larger than the predecessor - More expensive than its predecessor but by half cheaper than the competitors - Focal length range I found the predecessor better (28-75)
My Conclusion, the lens does a really good and sophisticated look, the look has been improved as well as to some components extended (Stabilizer USM). The size and weight is comparable to competitors with red ring. Whether the extra cost worthwhile competitors must each decide for themselves. Whether the transition from the old 28-75er worth exactly. Now I have both of them and will see over time how I decide what to give away, here safely decides someday weight or sharper look. Only four stars a great feel / look? Yes, simply because of the quite enormous Front focus. I just see the consumer that no correction options on your camera and have thus certainly not necessarily find a pleasure in this fact geungenen product.
