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FORUMS Photography Talk by Genre Bird Talk 
Thread started 16 Aug 2018 (Thursday) 08:56
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Achieving Sharp results w/ 1.4x extender?

 
bpalermini
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Aug 22, 2018 14:12 |  #16

I think that combo should do better than what you are getting. Shooting wide open at close range provides minimal depth of field. It also takes a lot of shots of hummingbirds to get one keeper, at least for me it does but is sure fun trying to get them.

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Aug 22, 2018 16:06 |  #17

jdnan wrote in post #18690199 (external link)
Here is an example of my 300 w/ the 1.4x, III. I'm actually getting better results than I've ever achieved when attempting to use the extender in the past. I haven't changed anything so I don't really know why other than I know exactly where the hummingbird is going and I can limit the focus range of the lens to 2.4-6m. When I've attempted to use the extender in the past, it has been with large birds like owls, etc. at much longer distances. Of course there is a noticeable fall off in sharpness from straight out of the 300 w/ no extender. These images are of course heavily cropped with some basic adjustments (highlights, shadows, clarity) in Capture One pro.
...

Evaluating how well the setup works at ISO 12800 is a bit of a strain for getting a baseline, even on a 1Dx II. It looks like you're actually recording good detail but losing it to such a high ISO. Your ISO 5000 shot looks like a much better result, at that small of a photo anyway.

Shots of a static subject, from a tripod, manually focused at 10x in Live View should give you your "best case" scenario as a 'before' step to gauge any other changes from. Then, a couple of the same shot in AF One Shot to see if it's hitting at the same spot or whether it's front/back focusing.

If you're getting consistent front or back focus, MFA the combo on that body; then retest.

Once you're getting acceptable results there, it's time to work on exposure settings and/or technique.


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Post edited over 1 year ago by CyberDyneSystems. (2 edits in all)
     
Aug 22, 2018 16:30 |  #18

The good news is that you absolutely should be able to get great results from the 300mm f/2.8L IS with a 1.4X T-Con. Add in the 1Dx2 as the body, and you should be golden!

So we need to figure out where the problem lies.

- Tripod tests: those recommending this are spot on.
Do some with a static subject, in good light at ISO settings around 100-400.
Shoot things with high contrast and sharp detail for your best chance to see how sharp things are.

- MFA or Micro Focus Adjust; This is the next step. Still on a VERY solid tripod.
The "test target" is important. Don't try to focus on anything that is at an angle to the lens. Only the "ruler" should be at an angle, not the target.

Like so;
http://www.squit.co.uk​/photo/focuschart.html (external link)

Also, check out this video for how to make the MFA;
https://www.youtube.co​m/watch?v=7zE50jCUPhM (external link)


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CyberDyneSystems
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Aug 22, 2018 16:35 |  #19

Lastly, we assume with your listed gear, that you have been achieving good results with the same before you added the 1.4x. Let us know if this is the case.


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jdnan
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Aug 22, 2018 21:44 as a reply to  @ CyberDyneSystems's post |  #20

thanks for the great info. it's quite clear that I need to do the static shots on a tripod in the proper environment and perform the proper MFA. I'm going to be reviewing all the great info provided by Jake, Frank and others & do the work to get some useful data to accurately assess the lens/extender with my camera bodies. One of the POTN members who lives close by has graciously offered to help me with this effort I am thrilled with this kind offer. There are some great folks on this forum and I hope I'll be able to return the favor for others some day.

As far as achieving sharp results without the extender, I guess I would have to say I'm not 100% satisfied with those results either. I seem to get more consistently sharp results from my Tamron lens, but of course I'm almost always using that lens in excellent light. I'll know more after I do the proper MFA work.


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Aug 24, 2018 10:22 as a reply to  @ jdnan's post |  #21

It was nice meeting you last night Jerry.

I believe we made some headway on getting your gear dialed in. Too bad the birds were all gone by the time we finished. Lol.

I'm confident that with the lens tweaks, proper case selection (& tweaks), and proper exposure, you'll see measurable improvements in IQ.

I'll be eager to hear how things work out now.


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Aug 24, 2018 13:01 as a reply to  @ EyeSpyEagle's post |  #22

thanks, again, Phil, I learned a lot! I'll be testing it out this evening & tomorrow morning


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Aug 24, 2018 22:03 |  #23

Not the greatest example, but this is what I am getting with my 1.4x TC. However this isn't with a Canon TC.


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Aug 25, 2018 00:29 |  #24

After MFA, I’ve used my 300 2.8 IS with a Tamron SP 1.4x and it’s almost indistinguishable from the bare lens. The Canon 2x III I have takes a bit of a hit in AF speed and IQ, but it’s still very good. My experience is with the 5D3 and 7D2, so the 1Dx’s should be capable of at least as good as what I’m getting. I don’t shoot birds though, just sports.


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Aug 25, 2018 08:24 |  #25

TeamSpeed wrote in post #18692095 (external link)
Not the greatest example, but this is what I am getting with my 1.4x TC. However this isn't with a Canon TC.
thumbnail
Hosted photo: posted by TeamSpeed in
./showthread.php?p=186​92095&i=i211533803
forum: Bird Talk

That looks like a crop? And at f/4.5, too! It looks pretty good to me!


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Aug 25, 2018 09:24 |  #26

Extender 1.4 x III is said to have been made for E F 300 F/2.8 L II lens. I am using this combination with my 5 D Mark III for wildlife photography with very good results but that doesn't include BIF. With 5 D Mark IV it should give very good results but you must first configure your camera also for fast action shots.

I attach an image of a tiger cub sprinting to cross the jungle road . Sharpness acceptable.


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Aug 25, 2018 20:16 as a reply to  @ PhotosGuy's post |  #27

It's my old kenko 1.4x, been wanting a Canon but not sure if its worth spending that much. I have the Canon 2xiii though.


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Sep 15, 2018 10:22 |  #28

I think the OP should lower his ISO and not try to freeze the Hummingbirds wings.
Taken with a Canon 300 f/4 with 1.4 tx. just noticed the first pic does not have the extender.


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Sep 15, 2018 10:25 |  #29

This does


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Post edited over 1 year ago by TeamSpeed. (3 edits in all)
     
Sep 15, 2018 15:26 |  #30

These were with the 2x III on the 70-200 II on the 5D4, cropped a bit.

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These were with the Kenko 1.4x on the same gear, but at high ISO no longer under dusk lighting...

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Achieving Sharp results w/ 1.4x extender?
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