Author Topic: 1.4x or 2x converter with 70-200/2.8  (Read 5711 times)

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Offline retoohs

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1.4x or 2x converter with 70-200/2.8
« on: July 19, 2014, 04:48:05 PM »
Hi is anyone using with of these combos? What are they like? Now I've added the 70-200/2.8 to my bag it all of a sudden is starting to feel heavy. I have an older Tokina ATX 400/5.6 that I just don't use because of the extra weight. I'm thinking if I can afford it maybe I should pick up the 2x converter before I leave Thailand. I won't lose anything on speed with my 400/5.6. What is IQ like? At only 200gms I'd be saving on weight. Cheers Alan
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Offline REX (aka TG)

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #1 on: July 19, 2014, 08:42:41 PM »
I have both, both work with the 70-200G but use them especially with the 300G f2.8 . For longer distance I use 70-400G. With the 70-200G I would recommend the 1.4X.

Your Tokina ATX 400/5.6 may not autofocus even with the 1.4X since the aperture will be f8 and the minimum aperture for autofocus is f8



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Offline retoohs

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #2 on: July 19, 2014, 11:11:08 PM »
Thanks Rex. I want to get rid of the Tokina. I'm 55 and weight has never been an issue but all of a sudden I'm finding my bag with the 16-35CZ, 24-70CZ and the 70-200/2.8 is starting to get as near as much as I want to carry. With the 1.4 I will only be gaining 200-280/4 while with the 2x I will gain 200-400/5.6. I don't use more than 200mm very often but thought it would be nice to have up to 400mm when I do. The IQ on the ATX 400/5.6 is good but not great so I'm guessing I would not lose anything there. Why do you think the 1.4x is the better option. Cheers Alan
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Offline chappo1

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #3 on: July 20, 2014, 01:12:32 AM »
I do not have a 200mm F2.8.  I have tried my kenko 1.4 on both the 70-300G where I am of course restricted to manual focus and on the Sigma 50-500mm which will still focus albeit
S L O W L Y and at a minimum of F8.
IQ is Ok but for me the novelty wore off after having tried it.  It is not heavy to carry though....john
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Offline REX (aka TG)

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #4 on: July 20, 2014, 09:33:57 AM »
The 70-200G works very good at 2.8 but if you attache the 1.4x then you have to go to f5.6 even if the max aperture is f4 and with 2x you have to go to f8 even if the max aperture is f5.6.

If you compare the 70-400G at 400mm and f5.6 and 70-200G with 2x at 400 and f5.6 the 70-400G is sharper. As alternative to the 70-400G the 2x is good one but if you own both then the 1.4X is more suitable.

P.S I think the original Sony/Minolta Teleconverter will not work(cant be attached) with you Tokina
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Offline retoohs

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #5 on: July 21, 2014, 10:37:16 AM »
Ok thanks Rex. Maybe I forget the converter and just keep the old Tokina. I really do not use the 400 much. Maybe next trip I might consider the 70-400 but I really do not think it would get enough use. Landscapes are my main thing. Again thanks for the info. Cheers Alan.
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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #6 on: July 26, 2014, 05:46:28 PM »
After a long and hard think about what you said Rex I am going to get the 1.4x converter. It is not often I need more than 200mm but when I do the extra 80 will be plenty and I will keep the old ATX 409 just incase I need longer. Was tempted to get the 70-400G but just don't think I'll get the use out if it. Thanks again for your advice. Cheers Alan
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Offline pointblank

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #7 on: July 27, 2014, 07:08:56 AM »
I used mine with the 2X converter, which I still have in fact and ... uhm, uhm ... I would not mind parting with it for a decent price. Reason, I no longer have my digital SLR system. My remaining SLR is a Dynax 5 and a 50/1.4 Minolta. Hence my 2X converter sitting nicely in the camera drybox.

Offline retoohs

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #8 on: July 28, 2014, 12:53:32 PM »
Wish I had a dry box. Dealing with air con and hi humidity here daily in Thailand. Looking forward to getting back to the dry air of my mountain home. I would have been interested in the 2x but what Rex said made sense and today I bought the 1.4x converter. I know I only gain 80mm but that will be useful and I will keep my old Tokina 400/5.6. Cheers Alan
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Offline pointblank

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #9 on: July 30, 2014, 05:08:53 AM »
a drybox is certainly a must for the tropics, realize the effects of humidity on your lenses are long term. Ie. you won't see issues in a week but after a while the problems begin and in many cases irreversible. I don't know the prices for a drybox in Thailand but here in Malaysia they are quite affordable. In fact I have one sitting empty but that will be harder to ship to you than a 2X converter instead .... hahahaha ....

Offline retoohs

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #10 on: July 31, 2014, 06:01:02 AM »
I've only a few days left here in Thailand then back to the dry mountain air of home which will quickly suck any moisture out. I've been pretty careful about taking my gear in and out of air-con rooms but at times it is unavoidable. I've a heap of silica gel sachets in my bag which I hope help as well. Usually I bring some less expensive glass but kept thinking what's the point of owning expensive glass if I can't use it. I suffer for my gear by keeping the air-con set high and haven't had too many issues with condensation so hoping my gear it fine. 
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Offline retoohs

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #11 on: July 31, 2014, 06:40:35 AM »
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Offline retoohs

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Re: 1.4x or 2x converter with 70-200/2.8
« Reply #12 on: July 31, 2014, 06:52:39 AM »
Pointblank what sort of dollars do you want for your 2x convertor? Not sure I want it as yet until I get a chance to play around with the 1.4x when I get home. I'm still thinking it as an option to getting rid of my old Tokina ATX 400/5.6. The Tokina isn't great at 5.6 so also step down at least one stop so speed wise I wouldn't lose anything with the 70-200/2.8. Just a thought at this stage. Cheers Alan
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