Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E

Started Jan 16, 2013 | Discussions
p m h
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Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
Jan 16, 2013

Has anyone had a chance to try this?

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daniel johnstone
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to p m h, Jan 16, 2013

you may find this helpful    http://www.naturalart.ca/voice/blog.html

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mfouks
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to daniel johnstone, Jan 16, 2013

Thanks Daniel.  After reading the blog, it sounds like the 70-200 f2.8 using the 2X teleconverter  is not that sharp until stopped down a bit- the newer 70-200 f4 is actually better.   It still doesn't really answer my question of which combination using teleconverters is better though i.e. 70-200 or 300  lens

Marsha

daniel johnstone wrote:

you may find this helpful http://www.naturalart.ca/voice/blog.html

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Richard3
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to mfouks, Jan 16, 2013

The F4 hands down for me best purchase I ever made .

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Kanano
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to daniel johnstone, Jan 17, 2013

Hi Marsha, saw your other post as well to decide between the two. Check this site out - he favours the 300 f4 and 1.4 tc as well

http://photographylife.com/best-nikon-lenses-for-wildlife-photography#more-25081

Cheers

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GMack
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to p m h, Jan 17, 2013

The f/2.8 lens may give you a better auto-focus lock on than the slower f/4 lens with a 2-stop converter.  Once you get up to around f/5.6-f/8 you are questioning the sensors in some cameras and some (less expensive models) may be worse AF offenders than others too.  Some may hunt a bit at the slower aperture too and might or might not hit the sweet spot either.

Mack

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mfouks
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to Kanano, Jan 18, 2013

thanks Kanano.  I read the site and it was very helpful.  I have pretty much decided that the 300mm F4 with the 1.4X is better than the 70-200 with the 2X.  Now I'm just wondering about renting the 300 mm f2.8 lens for a week in Costa Rica.  Either that or the 300mm f4.  I know that the 2.8 version is much better but I'm not sure I can handle its weight.

Marsha

Kanano wrote:

Hi Marsha, saw your other post as well to decide between the two. Check this site out - he favours the 300 f4 and 1.4 tc as well

http://photographylife.com/best-nikon-lenses-for-wildlife-photography#more-25081

Cheers

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mfouks
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to GMack, Jan 18, 2013

thanks Mack.  I'm thinking about renting the 2.8 instead, just not sure if I can put up with its weight.

Marsha

Mack wrote:

The f/2.8 lens may give you a better auto-focus lock on than the slower f/4 lens with a 2-stop converter. Once you get up to around f/5.6-f/8 you are questioning the sensors in some cameras and some (less expensive models) may be worse AF offenders than others too. Some may hunt a bit at the slower aperture too and might or might not hit the sweet spot either.

Mack

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p m h
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to daniel johnstone, Jan 19, 2013

Thanks Daniel for sharing this. It pretty much answers the question, especially for close/mid distance. Now if anyone could care to test it at (near) infinity

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Brandon birder
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to mfouks, Jan 19, 2013

mfouks wrote:

thanks Kanano. I read the site and it was very helpful. I have pretty much decided that the 300mm F4 with the 1.4X is better than the 70-200 with the 2X. Now I'm just wondering about renting the 300 mm f2.8 lens for a week in Costa Rica. Either that or the 300mm f4. I know that the 2.8 version is much better but I'm not sure I can handle its weight.

Marsha

Kanano wrote:

Hi Marsha, saw your other post as well to decide between the two. Check this site out - he favours the 300 f4 and 1.4 tc as well

http://photographylife.com/best-nikon-lenses-for-wildlife-photography#more-25081

Cheers

Depends what you mean by much better.

The 300 f2.8 is slightly sharper than the 300 f4 but it is close.

It has VR

It is twice as bright

It handles all tele convertors better.

But it is 3x the weight

Really needs a monopod

And costs a shedload of money.

Having said that I prefer it to the 300 f4 for what I do.

Renting would be a good idea.

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Keith2012
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to mfouks, Jan 28, 2013

I have done some searching for an answer to a question that I have but cannot seem to find my answer.....hence the reason for my post.  I have read many posts about the Nikon teleconverters with the 70-200 vrii 2.8 which I happen to have.  I know that the autofocus works at the f5.6 aperature which is where I would be at with a 2x but what I would like to know is if you stop the lens down to f8 to more, will the autofocus continue to work assuming I am in good daylight conditions?

Thanks in advance.

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MikeInIndy
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to Keith2012, Jan 28, 2013

"Stopping down" only happens when the shutter is fired or the DOF preview button is hit. The camera always focuses with the lens wide open.

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westcoasthd
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to MikeInIndy, Jan 28, 2013

What you probably didn't realize is that a f4 lens with a 20TC has f8 as the effective wide open aperature. So focus is affected when shooting wide open at f8.

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westerner
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to westcoasthd, Jan 28, 2013

What is wrong with using a 1.7x teleconverter with the 70-200? I have read many users talking up the awesome image quality of this combo. It's almost as though the 1.7x was made for the 70-200, it is that good. And wide-open aperture is f4.8 (lose 1.5 stops of light).

I would personally prefer the versatility of the zoom lens over the fixed 300, but that's just me.

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K.B.

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Keith2012
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to MikeInIndy, Jan 28, 2013

Mike,

I just want to repeat what I think I understand...correct me if I am wrong.    The autofocus should not be directly affected by how I set my aperture to take the shot I want to take.....the camera will autofocus using the wide open aperature....which in the case of a Nikon 70-200 vrII 2.8 is at f5.6 with the tc20eIII.....if that makes sense.

Thanks!

Keith

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westerner
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to Keith2012, Jan 28, 2013

Mike may choose to answer as well, and I do not mean to butt in, but, yes, that is is pretty much it. Focus point will not change when you take a photo with the lens stopped down, the depth of field simply becomes greater. Depth of field preview allows you to see, first-hand, the changes in depth of field before you actually take the shot. The camera always uses the widest available aperture to auto focus with. If you are set to f16, the camera auto focuses at, in your case, f5.6, then stops the lens down to f16 when the shutter is pressed. After the exposure is made, the lens returns to f5.6, ready to set focus on your next shot.

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K.B.

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MikeInIndy
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to westcoasthd, Jan 28, 2013

Apparently you didn't READ the post I was replying to, he said he had the 2.8 version of the lens and used the term STOPPING DOWN.

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-Mike

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MikeInIndy
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to Keith2012, Jan 28, 2013

That's correct, if you look at the lens and camera there's a little lever that connects the two that snaps the aperture blades open and shut.  When you mount the lens the camera sets it to wide open and then flips the lever to close down the aperture only when taking a shot or using one of the preview features that shows you the actual aperture you're setting.  On older cameras the "aperture ring" was a stopper that just caused the lever to stop at the setting you chose, on newer cameras the lever is variable and just closes the lens down the amount you pick.  This is why fast lenses generally focus faster because no mater what aperture you decide to use them at, they can focus at their fastest possible aperture.

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-Mike

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Keith2012
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Re: Which lens is sharper with TC-20E III: 70-200mm f/2.8 VRII or 70-200mm f/4 on D800/E
In reply to MikeInIndy, Jan 28, 2013

Great....thanks guys!!

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