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      09-24-2011, 07:20 PM   #1607
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Quote:
Originally Posted by scollins View Post
But I doubt it will autofocus quickly or reliably with a 2X, since that would be f11. Maybe in a very bright setting, but I bet it would still be slow.

But for something moving very slowly (like the moon..) it would work ok
With the 1D and the 1Ds it's not horrible in decent light, but you can only use the center AF point.

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      09-26-2011, 03:38 PM   #1608
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one more day till I get my 70-200 f4 is
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      09-26-2011, 08:57 PM   #1609
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why not go for the 2.8 IS?
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      09-26-2011, 09:02 PM   #1610
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Originally Posted by ichiban View Post
why not go for the 2.8 IS?
For me it's too friggin' heavy to carry when I'm also carrying a 500mm f/4. If you need the f/2.8, then great, get it and lug it, but if you don't have a special need for it, then go with the f/4.
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      09-26-2011, 10:42 PM   #1611
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Define bokeh...

Go.
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      09-26-2011, 10:50 PM   #1612
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Quote:
Originally Posted by UdubBadger View Post
Define bokeh...

Go.
Shape, texture and overall "look" of out of focus regions of an image. Not exact, but pretty much covers what most folks mean.
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      09-26-2011, 10:56 PM   #1613
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So an extreme out of focus region of a photo containing a shallow DOF?
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      09-26-2011, 10:58 PM   #1614
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Quote:
Originally Posted by dcstep View Post
For me it's too friggin' heavy to carry when I'm also carrying a 500mm f/4. If you need the f/2.8, then great, get it and lug it, but if you don't have a special need for it, then go with the f/4.
This, it's twice as heavy, out of my budget(kinda pushing it with the 4 IS even) and version 1 isn't as sharp as the f4....version 2 is over $2300
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      09-27-2011, 12:32 AM   #1615
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Quote:
Originally Posted by MATT0404 View Post
Just wanted to post an update to this. I received the original receipt and sent the lens to Tokina for evaluation. I called them yesterday to check on the status and they said they received the lens on the 8/31, repaired the autofocus motor, and shipped it out on 9/1. I should have it back on Thursday. Repair was covered under warranty.
Update #2:

Tokina repaired my 16-50/2.8 and it worked for about 5 minutes before resorting back to the grinding noise. I shipped it back to them, once again, and they responded that the lens is irreparable and they are going to issue me a refund of the purchase price of the lens. The representative mentioned that this particular lens has been very problematic.

I'm thinking about the Sigma 17-50/2.8 OS as a replacement. Any advice or recommendation?
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      09-27-2011, 07:00 AM   #1616
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http://photography-on-the.net/forum/...ht=sigma+17-50
Images and comments on this particular lens.
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      09-27-2011, 08:41 AM   #1617
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Originally Posted by UdubBadger View Post
Define bokeh...

Go.

Beautiful white-tail doe munching on grasses by dcstep, on Flickr
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      09-27-2011, 07:37 PM   #1618
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So I got the 70-200 is today...question, is it supposed to make clicking sounds? I think it's the stabilizer cuz when it's off the clicking goes away.
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      09-27-2011, 08:09 PM   #1619
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Quote:
Originally Posted by dcstep View Post
That just looks like shallow DOF and gradient of colors to me because the background isn't showing shapes/contour/representing what it is... which is what I thought bokeh was.
Am I misunderstanding Bokeh still?

Last edited by UdubBadger; 09-27-2011 at 08:25 PM..
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      09-27-2011, 08:21 PM   #1620
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Quote:
Originally Posted by khaye1 View Post
So I got the 70-200 is today...question, is it supposed to make clicking sounds? I think it's the stabilizer cuz when it's off the clicking goes away.
A certain amount of clicking is common with IS. If you hear it, that's ok. If your subjects hear it, there might be a problem. It should be audible only when you have the lens very close to your head.
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      09-27-2011, 09:12 PM   #1621
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Here ya go. Bokeh http://photography-on-the.net/forum/....php?t=1059086
object in focus everything else dissapears very smoothly and just melting away.
One of my Bokeh pics. F2.8 on a 100mm Canon. See how everything blends very smoothly away from sharp focus?
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      09-27-2011, 09:22 PM   #1622
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^^ NICE!

Quote:
Originally Posted by M_Six View Post
A certain amount of clicking is common with IS. If you hear it, that's ok. If your subjects hear it, there might be a problem. It should be audible only when you have the lens very close to your head.
thanks...here's the first shot at 100% crop

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      09-27-2011, 09:49 PM   #1623
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Nice shot!! Very sharp, especially for a 100% crop.

I'm envious. That lens is going to be my Christmas present to myself.
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      09-27-2011, 10:37 PM   #1624
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you guys snap some good pics with whatever you're working with...I could only imagine what you can do with this.

it did set me back a few shiny pennies though. Thank goodness for "on-call" money, haha.
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      09-28-2011, 12:06 AM   #1625
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More about Bokeh...

Bokeh really isn't about the far-out-of-focus regions of an image. Everything is pretty much smoothly blurred there. Why Bokeh matters is because when portions of an image get further and further out of focus they don't always smoothly blur out (like simply increasing the radius of the Gaussian Blur filter in Photoshop). Instead the image formed by real lenses often show objects "breaking up" with some nasty looking spatial variations in the region of intermediate focus - before fully blurring out in the far OOF region. A lens that's said to have "good bokeh" avoids this tendency and tends to produce a smooth transition from sharp to blurred as the degree of misfocus increases.
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      09-29-2011, 02:17 PM   #1626
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i wonder how legit this is

http://www.thedigitalhunter.com/prod...roduct_id=2563
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      09-29-2011, 02:55 PM   #1627
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Something is wrong there. That's a $1500 body for less than a 60D? Not a chance.

They supposedly have a new 5d Mk II with a 17-85mm IS lens for under $2k? Yeah, right.

More info here. Scammers, of course. Just like the Craigslist scammers who try to sell high end cameras for short money.
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      09-29-2011, 03:26 PM   #1628
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http://www.wisebread.com/do-not-buy-...-you-read-this


common scam. buy from known, trusted merchants ONLY.
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