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Thread started 29 Aug 2006 (Tuesday) 08:43
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Tamron 17-50mm f/2.8

 
bedojo
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Location: portland oregon
     
Dec 22, 2010 18:19 |  #2536

dirtyhucker wrote in post #11499196 (external link)
I just got mine off ebay from a sketchy seller. its front focusing element was loose and it was full of dust. i see your ring cover is already off exposing the three screws holding the glass on. Dont be afraid to pull it apart and lift the front glass off the lens, it just sits there on its own mount. Theres no calibration needed when you put it back together. Its an easy fix, get some good small screwdrivers and pull it apart, clean it out and put the lens back together. Easy fix. No calibration needed.


definitely worth a try, as it sits its worth garbage, repair is same whether u try it first or send it in.
and if you fix it then u can feel better about selling it for more money.


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cbacarella
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Location: Madison, WI - USA
     
Dec 22, 2010 23:41 |  #2537

dirtyhucker wrote in post #11499196 (external link)
I just got mine off ebay from a sketchy seller. its front focusing element was loose and it was full of dust. i see your ring cover is already off exposing the three screws holding the glass on. Dont be afraid to pull it apart and lift the front glass off the lens, it just sits there on its own mount. Theres no calibration needed when you put it back together. Its an easy fix, get some good small screwdrivers and pull it apart, clean it out and put the lens back together. Easy fix. No calibration needed.

bedojo wrote in post #11499420 (external link)
definitely worth a try, as it sits its worth garbage, repair is same whether u try it first or send it in.
and if you fix it then u can feel better about selling it for more money.

Thanks guys for the responses. I was really wondering about the front element and how it was held in there. I was quoted at $155 to fix / clean / re-calibrate from Tamron, so i shall give it a try myself, then go from there!

Thanks again,

.Chris




  
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roynaldo1
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35 posts
Joined Feb 2009
Location: Poole, Dorset, UK
     
Dec 23, 2010 10:02 as a reply to  @ cbacarella's post |  #2538

Haven't been on here for a while, here are some recent shots.


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roynaldo1
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Dec 23, 2010 10:03 as a reply to  @ roynaldo1's post |  #2539

And another


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Frogdog
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Dec 23, 2010 11:18 |  #2540

The first one is really nice roynaldo!


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lnandi
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Dec 23, 2010 17:28 |  #2541

pulsar123 wrote in post #11492638 (external link)
Adobe Camera Raw 6.2 (came with Photoshop CS5, and I think is in Lightroom as well) can automatically correct images for lens aberrations, including the Tamron 17-50mm. It can do that to the whole batch of images, in one step. It also does many other lenses.

Great news!

Especially that I just unboxed my Christmas present and found a new tamron 17-50 inside :) My gf really did want to make me happy :)
Can't wait to have some sunny days :)

BTW... what is a good way to check my lens for any problems? I guess I can find that front-backfocusing testing chart somewhere on the internet. Any other things to look for? I guess I have 3 days to return if anything is wrong.
Also my lens says it is made in Japan. This is good, isn't it? Compared to the other which are made in China? Or some other country, I can't recall...


550D | Nifty Fifty | 100mm F2 | Yongnuo 468, 565 and some umbrellas

  
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TweakMDS
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Dec 23, 2010 19:44 |  #2542

I've had this lens for a while now (over two years), but lately, the 11-16, 28 1.8 and 35 macro have all been on the winning side of competing with it for camera time... My lunchbreak with winter landscape was a good moment to get it back in the saddle :)

Pardon my heavy processing, it's dark in here so may have gone overboard with the contrasts. Click for pixelpeeping and exif on flickr.

#1. Let's get the sun all in there and see what flares. Not so much.

IMAGE: http://farm6.static.flickr.com/5209/5286406575_7d78e9c73b_z.jpg
IMAGE LINK: http://www.flickr.com/​photos/mdstoop/5286406​575/  (external link)

#2. Backlit tree, gotta love the way this lens behaves with heavy conditions such as backlit snow.
IMAGE: http://farm6.static.flickr.com/5125/5286406569_7926501e16_z.jpg
IMAGE LINK: http://www.flickr.com/​photos/mdstoop/5286406​569/  (external link)

#3. "The office" itself; Kasteel Nederhemert
IMAGE: http://farm6.static.flickr.com/5049/5286406589_36e844a367_z.jpg
IMAGE LINK: http://www.flickr.com/​photos/mdstoop/5286406​589/  (external link)

Thanks for looking, C&C always welcome and appreciated :)

Some of my lenses focus beyond infinity...!
~Michael
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"My featured shots" (external link)

  
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roynaldo1
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Location: Poole, Dorset, UK
     
Dec 24, 2010 02:47 |  #2543

Frogdog wrote in post #11503010 (external link)
The first one is really nice roynaldo!

Thanks!




  
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roynaldo1
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Location: Poole, Dorset, UK
     
Dec 24, 2010 02:51 |  #2544

Not sure if I've already posted this one but it's probably my favourite that I've taken with this lens.


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roynaldo1
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Dec 24, 2010 02:56 |  #2545

Really don't feel like doing any work this morning!


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roynaldo1
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Location: Poole, Dorset, UK
     
Dec 24, 2010 02:57 |  #2546

Great pics TweakMDS, I think they look spot on




  
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roynaldo1
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Dec 24, 2010 03:43 |  #2547

and more


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Inchpractice
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Location: Bucks, England, UK.
     
Dec 24, 2010 04:45 |  #2548

lnandi wrote in post #11504905 (external link)
BTW... what is a good way to check my lens for any problems? I guess I can find that front-backfocusing testing chart somewhere on the internet.

I think this is the one you mean:

http://focustestchart.​com/chart.html (external link)

You can then download and print out the test chart yourself here:

http://focustestchart.​com/focus21.pdf (external link)

A good way to test new lenses you've bought imo.
Just remember to shoot in good light and compare against other lenses for a proper comparison.
As I said before in this thread the first two copies of this lens that I bought weren't focussing correctly so I'd recommend doing this test at your earliest convenience.


Groom suitsexternal link for photographers with taste.

  
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lnandi
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Joined Dec 2010
     
Dec 24, 2010 09:39 |  #2549

Inchpractice wrote in post #11507153 (external link)
I think this is the one you mean:

http://focustestchart.​com/chart.html (external link)

You can then download and print out the test chart yourself here:

http://focustestchart.​com/focus21.pdf (external link)

A good way to test new lenses you've bought imo.
Just remember to shoot in good light and compare against other lenses for a proper comparison.
As I said before in this thread the first two copies of this lens that I bought weren't focussing correctly so I'd recommend doing this test at your earliest convenience.

Thanks!
I will do it as soon as I get to a printer...


550D | Nifty Fifty | 100mm F2 | Yongnuo 468, 565 and some umbrellas

  
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pulsar123
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Dec 24, 2010 18:27 |  #2550

You better check the lens for front/back focusing. With your camera, you can't do AF micro-adjust. I just calibrated my Rebel XS and Canoin 135L, focus is spot on, but the Tamron (which I sent before to their service center, but they said it is within their specs) is still front-focusing. I actually developed a little of theory about how phase detection AF works, and it looks like I should be able to fix the front focusing by adding a shim between the lens and its mount. See the thread here:

https://photography-on-the.net …hread.php?t=967​488&page=2


6D, Tamron 24-70 f2.8 VC, 135L, 70-200 f4L, 50mm f1.8 STM, Samyang 8mm fisheye, home studio

  
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Tamron 17-50mm f/2.8
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