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Author Topic: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review  (Read 40812 times)

candyman

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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #75 on: August 19, 2012, 04:33:22 AM »
Happy reading :)

You misunderstood me: I *know* what a distortion is, I just didn't read any *review* that says the lens has a problem with it. Dpreview & KR have no review yet, Photozone: "At 24 mm the lens shows a heavy amount of barrel distortion (~3.8%), which flips over to a slight pincushion type (~0.8%) at 70mm. In the middle range the distortions are marginal. "

Of course there a dozens and dozens of user reviews out there - but given the poor Tamron quality control many people "test" a bad sample and generalize their findings. I'd rather rely on a professional reviewer who replaces a lens if he discovers unexpected problems. Btw, even a moustache distortion could be corrected with the correct lens profile, it's just a question how much quality is lost.


I think Dwarf is referring to :
http://www.lenstip.com/340.11-Lens_review-Tamron_SP_24-70_mm_f_2.8_Di_VC_USD_Summary.html

The more you look, the more you see ─ Robert M. Pirsig


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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #75 on: August 19, 2012, 04:33:22 AM »

Marsu42

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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #76 on: August 19, 2012, 05:30:04 AM »
I think Dwarf is referring to :
http://www.lenstip.com/340.11-Lens_review-Tamron_SP_24-70_mm_f_2.8_Di_VC_USD_Summary.html

I see - but I think this review is a good example of a test of a Tamron lens with qc issues because the verdict is "Tamron loses in many categories (like resolution in the frame centre [...]" which is the *exact* opposite of what every other review is saying: The main advantage of the Tamron is supposed to be its sharpness in the center with massive falloff even in mid-frame! So I think that explains the "moustace" distortion, too, but still getting a good Tamron seems to be like winning the lottery.

Rienzphotoz

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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #77 on: August 22, 2012, 07:31:04 AM »
Sorry Bvukich, but the general consensus by non-Canon fan boys (ie Independent Testers), the 5D3 got it's a$$ handed to it by Nikon.

Canon needs a real winner, and soon.
[/quote]
Until 2 weeks ago I had the Nikon D700, Canon 7D (sold both to buy 5D MK III).
I  almost bought the D800 until I took a few shots at the store at ISO 1600 & ISO 3200, then I also held the 5D MK III and did the same ... my conclusion is that Nikon D800 5cuks cow ni9ples at ISO 800 and above ... yes the D800 is AWESOME at ISO 100 in a controlled lighting environment but NOT in all lighting situations.
For photographers like me an affordable all-rounder full frame DSLR is more useful then the awesomeness of megapixels at low ISO.
During video recording I use Samsung 128GB Series 7 Slate 11.6" Tablet PC (running on Win 7 & Canon EOS Utility) tethered to my DSLR as my touch screen live view / field monitor ... and I've made several videos for my company with this setup.  To have the same set up with Nikon I have to shell out extra money for their software.
Contrary to most uninformed buyers (in terms of video performance) Nikon D800e (which sells for US$3300) is closer to 5D MK III (yet D800 falls short of 5d MK III's video performance) ... also Nikon does not give any software similar to Canon's EOS utility for free (instead one has to shell out US$ 135 to get Nikon software) ... so for someone like me the price difference between D800e and 5D MK III is only US$65 .... I am glad I bought 5D MK III at $65 more than D800 and got better video performance and an all round camera that works amazingly well at incredibly high ISO. Another thing that most people (who make purchase decisions on price alone) do not consider is that Nikon glass is much more expensive than the equivalent Canon glass (so whatever price advantage they thought they got from D800 over 5D MKIII, they quickly lose that in the Nikon lenses ... in the end you realize that both cameras, eventually, cost the same).
For me Canon already has a real Winner in 5D MK III   
For studio photographers or those who always use  tripods, yes there is no equal to Nikon D800 at that price range and it knocks the socks off 5D MK III. But I am not a studio photographer and for my needs I have a real winner in 5D MK III.
Canon 5DMK3 70D | Nikon D610 | Sony a7 a6000 | RX100M3 | 16-35/2.8LII | 70-200/2.8LISII | 100/2.8LIS | 100-400LIS | 40/2.8 | 50/1.4 | 85/1.8 | 600EX-RTx2 | ST-E3-RT | 24/3.5 T-S | 10-18/4 OSS 16-50 | 24-70/4OSS | 55/1.8 | 55-210 OSS | 70-200/4 OSS | 28-300VR | HVL-F43M | GoPro Black 3+ & DJI Phantom

BrianMichael

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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #78 on: February 12, 2013, 01:11:51 PM »
I'm totally sold on the Tamron 24-70mm with VC over the Canon..

Canon is said to be a lil sharper.. But not worth $1000 more.. Plus.. A lot of what I do is in low light no flash.. I need to shoot on lower shutter speeds while shooting hand held.. The vibration compensation of the Tamron sells it for me.. Way to go Tamron for stepping it up as a third party company..

If we were speaking about 70-200mm I'll be a canon fanboy

Marsu42

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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #79 on: February 12, 2013, 02:32:15 PM »
Canon is said to be a lil sharper.. But not worth $1000 more.. Plus..

The Canon is more "worth it" if corner sharpness is paramount or often really shooting @f2.8 - but if the general style is to shoot @f4+ for increased dof and only for available light emergencies wide open then the Tamron with vc and 6 year warranty has a strong case - if you can get a good copy.

Yes, there is one report of a lens element coming loose and if I'd be a full time pro on heavy duty shooting the build quality might favor the Canon, but currently that won't hinder me from getting the Tamron.

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Re: Tamron EF 24-70 f/2.8 VC in Stock & Quick MTF Review
« Reply #79 on: February 12, 2013, 02:32:15 PM »