Author Topic: To E mount or not to E mount  (Read 2287 times)

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Offline species

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To E mount or not to E mount
« on: July 20, 2014, 10:01:54 AM »
Hi, i recently purchased a Sony a6000 which i am very impressed with, so much so that i am thinking about ditching my A99 and buying a A7r for landscape and zoo work.  My only issue is that for zoos i use my 70-400mm all the time, and anything less than 400 would be a bit of a non starter.  I was wondering what options, other than the Sony convertor (which frankly seems like a bit of a bulky addtion there might be?  There seems to be a distinct lack of longer lenses for e mount?

Are there such things as 2x convertors for e mount?

If i bought a 200mm lens and the sony A7r with the 36mp, could i use the clear zoom and what resolution would i need to downgrade to?

Offline REX (aka TG)

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Re: To E mount or not to E mount
« Reply #1 on: July 20, 2014, 11:31:51 AM »
I have also a6000 with SEL 70-200 G f4 very..very... good combination for sports. The SEL 70-200G f4 is super silent and super fast compare to 70-400G on SLR/SLT body. I cant imagine using the La2/4 with 70-400G because...

1st you will loose the PDAF of the a6000. The camera will be convert to SLT with about one stoplight loose and also use an AF system from a55.

2nd you will be holding about 2kg combination from a body that only weight 400gr..... very uncomfortable.

There are no teleconverter for the moment but if they ever make it I think it will work perfect with 70-200G f4 since the PDAF work perfect until closed aperture to f13

If you want to keep the AF speed of a6000 you must stay with E-mount lens or if  speed is not very important you can use what ever adapter you like (Sony one or after market)
aSLT/SLR/NEX,DYNAX

Offline sum_of_all_parts

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Re: To E mount or not to E mount
« Reply #2 on: July 20, 2014, 02:57:50 PM »
I hope this might help. I own the a7R, the 70-400 mm G zoom, a SLT a77, and the full frame adapter (LA-EA4) and have had to chance to work extensively with them. To cut to the chase, I do not use the 70-400mm on the a7R with the adapter, but simply keep that long zoom mounted on the a77. Part of the reason is convenience. I dislike changing a big lens out in the field and if I am carrying such a large heavy optic, it is simply more convenient to have it mounted on the body ready to go. The weight penalty of having to carry second camera body is made negligible by the size and weight of the zoom.

Having said that I have used the LA-EA2 adapter and it does involve some light loss. It uses 1/3 f-stop of light for the auto sensor and the remaining 2/3 f-stop goes to the sensor. Its size and weight is not big--it weighs 4 ounces and it works nicely on the a7R. I use this adapter with a Tamron 90 mm macro and a 100-300 mm APO Minolta Zoom and I have no complaints of about using it with either. Basically, focusing speed is on par with my a77. For these two lenses, I will use the LA-EA4 adapter as both are reasonably compact and the both are excellent optics. I might add that even without image stabilization, these two lenses are usable with careful hand holding techniques. It might be just me, but I prefer using the 70-400 mm on a tripod--but then again, I just turned 65 and I am getting a tad weaker. A friend is trying to get me to buy his 1.4X Sony Teleconverter to use on the 70-400 mm. He reports it is optically good; however, the lens will not autofocus with this adapter. I am on the fence about buying this as it will make the 400 mm the optical equivalent of a 800 mm lens (on an APS-C sensor)  and I do not know if I need a lens this long. By the way, the 70-400 mm is a wonderfully sharp and I enjoy using it on the APS-C sized sensor cameras.

Brian Matsumoto
« Last Edit: July 20, 2014, 03:07:44 PM by sum_of_all_parts »

Offline species

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Re: To E mount or not to E mount
« Reply #3 on: July 20, 2014, 07:45:33 PM »
Im in the same boat, in that i am finding it hard to lug round the weight of my a99 and the 70-400mm, but given what you've said I'm not seeing a viable option with the A7r.  I guess if the clear zoom (if it has it) gave approx 20mp i could try a 200mm lens, but im not feeling that's going to work well as my a99 setup.  I love my a6000 and agree it's awesome for sports, but i dont want to lose full frame, so need something like A7r.  Wonder when/if Sony is going to get its butt in to gear and bring more decent e mount lenses to the table...

Offline chappo1

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Re: To E mount or not to E mount
« Reply #4 on: July 20, 2014, 11:33:40 PM »
Another 65 year old weakling is reading all these threads closely as his  A99 with a 24-70 Zeiss is fantastic but getting heavier as time ticks by and one day will be replaced with an A7 or whatever they call it by then...... john
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Offline sum_of_all_parts

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Re: To E mount or not to E mount
« Reply #5 on: July 21, 2014, 12:36:04 AM »
Right now, my camera bag has the a7R with the 24-70 mm zoom and the Minolta APO 100-300 mm Zoom with an attached LA-EA4  adapter. This is about as much as I wish to carry. I may substitute my Nikon 20 mm wide angle for the Minolta zoom, depending on where I am going.  It I decide to take the 70-400, it is mounted on the A77. Viewing my photography notes, I note that I seldom take both the 70-400 mm and my bag with the a7R. It just may be me, but when I use the long zoom, I tend to use it at its long end and it seems when this is a requirement, I really don't use the "normal" zoom all that much.

I usually photograph with my wife and she has found the perfect solution. She carries the a7R with normal zoom and lets me carry the 70-400 mm with a77 and any accessory lens she wishes to use! In fact, she bought me a photographic back pack I can carry more stuff for her.

Brian Matsumoto