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#21 |
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Join Date: Jul 2003
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No, the Tamron is full frame, and it is advertised that way, the di just signifies they think it works well with digital as well. The entire Tamron line claims they work well with 35mm and digital. I have been using my Tamron 28-75 F2.8, xr di on my eos 1(ancient film device) and the image is clean and sharp right to the edges.
I have yet to break a tamron, whereas I have broked 2 sigmas (1 burnt focus motor, 1 frozen diaphram). So lighter may be in the plastic materials used in their construction. NHL wrote: The Sigma 24-70 f/2.8 is a full-frame (ie larger filter size) whereas the Tamron is for APS-C sized cameras! Same with the Tokina (and why they are "inconsistent quality") --> Be careful of ratings since the Sigma (and Tokina) could be penalized at the peripherals when reviewed on a full-frame but you're only using the best center portion of this lens on a D70. ![]() The lighter for 'cropped' camera 24-60mm f/2.8 (smaller filter) is more in line with the Tamron... :idea: |
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#22 | |
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Join Date: Jun 2002
Location: 39.18776, -77.311353333333
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The Sigma 'DG' is equivalent to the Tamron 'Di' and will work on a full-frame as well even though they're optimized for APS-C... The non-DG version are true full frame
![]() http://www.luminous-landscape.com/co...m-nov-04.shtml Quote:
BTW there's no motor in the Nikon (unlike Canon) lens. The autofocus is done by the camera, ie the motor is inside the camera! So when someone talks about a lens AF speed that's an oxymoron, a brighter lens will help the camera focus faster than a darker lens, or a wide will aid the camera to focus faster than a tele, but a lens itself has no speed. Only AF-S(or I) and HSM lenses have motor in them and why they are faster and quieter. :idea: BTW all EX lenses are metals, and the Tokina is built like a Tank (weight like one too) I have the same one on my Minolta 9Xi! :G |
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#23 |
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Join Date: Jul 2003
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Yes, agree!
Was just joking about the plastic parts :G, I've just had bad luck with some brands. I know others who have been using them without problems for a long time. The only Tokina I have is a 70-210mm FD mount and I think you can use it to bang in nails. They did not skimp on the armour. |
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#24 |
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Join Date: Apr 2003
Posts: 45
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I bought a new Tamron 28-75 F2.8 XR Di for my D70 and returned it. I could not get clear focus under several different settings and conditions. I've heard of others with the same problem. Too bad because I really want to get a small, affordable 2.8 lens.
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#25 | |
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Join Date: Feb 2004
Posts: 269
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tksuther wrote:
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#26 |
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Join Date: Apr 2003
Posts: 45
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Yes, I've heard this too - it takes a few copies to find a good one. Maybe I'll reorder one later. Any other suggestionsfor a small, affordable f/2.8 or faster?
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#27 | |
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Join Date: Feb 2004
Posts: 269
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tksuther wrote:
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#28 |
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Join Date: Jun 2002
Location: 39.18776, -77.311353333333
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Another side note in quality of zooms -> check for the ones which hold focus as one zooms in or out: Most newer zooms simplify the design in order to make a zoom lighter and the focus doesn't hold anymore...
Check a zoom out at the wide and then throughout the tele positions, does the distance ring varies or the focus changes ? ![]() Quite a rare breed theses days: "Like the rest of the lenses in the AT-X series... is what is commonly referred to as a parafocal lens, meaning when focus is achieved at a telephoto focal length, it is possible to zoom back to a wide angle and maintain focus on the subject." http://www.fredmiranda.com/reviews/s...rt=7&thecat=29 |
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#29 |
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Join Date: Feb 2004
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What is with Sigma using nearly identical names for different versions of a lens? That made it tough when I got my 70-300 APO Macro Zoom II because there were I and II versions, plus DL versions instead of APO. With the 24-70 lenses, majority of reviews/feedback weren't very positive but strangely some were quite positive. Evidently the new 24-70 is quite a bit better than the previous version, hence the varying opinion.
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#30 |
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Join Date: Nov 2004
Posts: 28
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I've got the 24-70/2.8, and it's not the sharpest lens in the world - but it'll do. Here's a 100% crop at ISO 200 on a D70:
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