OMD E-M1 vs Sony A-7, What's the Difference?

Started Oct 23, 2013 | Discussions
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captura Forum Pro • Posts: 21,795
OMD E-M1 vs Sony A-7, What's the Difference?
1

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

1. The sensor is 4x bigger.

2. Depth of field is radically different.

3.

Michael Kaufman
Michael Kaufman Senior Member • Posts: 2,690
Re: OMD E-M1 vs Sony A-7, What's the Difference?
8

captura wrote:

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

1. The sensor is 4x bigger.

2. Depth of field is radically different.

3.

When you take the time to add a lens, the size and weight are generally very different. I only mention this because the depth of field is only relevant if you include a lens.

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Banger
Banger Contributing Member • Posts: 592
Re: OMD E-M1 vs Sony A-7, What's the Difference?
4

1, OK ..but no big deal with newer technology. IQ probably very close, more dependent on particular lens used rather than anything else.  I suspect Canikon are starting to get worried, particularly Nikon as the Sony is likely using the same D800 (sony) sensor.

2. Sure, paper thin DOF easier if that's where you get your jollies, but most folks are more interested in the benefits of greater DOF with u4/3 & APSc.

3. Body size comparable, but Sony requires 35mm sized lenses, and that is a very big heavy deal, particularly if you want f2.8 or wider lenses.

and ???

Rob

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stimmer Veteran Member • Posts: 5,138
Re: OMD E-M1 vs Sony A-7, What's the Difference?
1

Probably subtle things...

.lenses will have to be slower to be small, so depth of field advantage is lost.  Lenses will be very expensive, 1000 bucks at least per lens.  Focusing will be a little slower.

that being said it looks great.  The first real camera from Sony that is worth anything.

captura OP Forum Pro • Posts: 21,795
Re: OMD E-M1 vs Sony A-7, What's the Difference?

Banger wrote:

1, OK ..but no big deal with newer technology. IQ probably very close, more dependent on particular lens used rather than anything else. I suspect Canikon are starting to get worried, particularly Nikon as the Sony is likely using the same D800 (sony) sensor.

2. Sure, paper thin DOF easier if that's where you get your jollies, but most folks are more interested in the benefits of greater DOF with u4/3 & APSc.

True enough. I thought the DOF with APS-C was a good compromise, but now NEX is dead.

3. Body size comparable, but Sony requires 35mm sized lenses, and that is a very big heavy deal, particularly if you want f2.8 or wider lenses.

The Zeiss EF FF lenses I handled, a 35mm/2.8 and a 50/1.8 were sureprizingly smalll. Longer lenses will be large. Old E-mount APSC lenses still work OK, but only 10mp on A7 and 16 mp on A7r.

and ???

Rob

captura OP Forum Pro • Posts: 21,795
Re: OMD E-M1 vs Sony A-7, What's the Difference?

Michael Kaufman wrote:

captura wrote:

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

1. The sensor is 4x bigger.

2. Depth of field is radically different.

3.

When you take the time to add a lens, the size and weight are generally very different. I only mention this because the depth of field is only relevant if you include a lens.

I found it difficult to shoot without a lens.  Although I adapted my Olympus body-cap lens to APS-C and it worked. I suppose that might count as half a lens.

Art_P
Art_P Veteran Member • Posts: 9,870
Re: OMD E-M1 vs Sony A-7, What's the Difference?
2

Focus speed, frame rate - isn't the Sony a bit sluggish?

Current availability of lenses - Sony will take some time to catch up to 4/3 (and no, APS lenses don't count here)

Price of lenses (when available)

IBIS

Size of lenses, especially at the long end - There may be some small E mount primes on the way, but when it comes to reach you can fit in your pocket, it's hard to beat a smaller format.

The A7 may be a better match to old film lenses.

the higher resolution of the Sonys would likely be preferred by landscape shooters who can never get enough detail.

The person thinking about a FF Canikon might well be tempted to give the new Sony more than a casual glance... But there's that lens availability issue. Well, we will see how fast Sony can release a reasonable set of lenses.  More interesting to someone starting from scratch than someone who already has a number of (AF) lenses in another mount

The person with a good deal invested in 4/3 or m43 lenses probably won't be so excited by the A7 as a replacement for their current system.

I think the real news here would be if Nikon or Canon takes note and develops a compact FF mirrorless body with fast accurate AF using existing lenses (even if adapter is needed). Such a camera could well kill off Sony FF mirrorless before it gets off the ground. Fortunately for Sony, Canikon doesn't move that fast.

Biggest market I see for the new Sony is someone already using Sony APS and looking to go to FF

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Art P
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I live where the two play together,
I thrive on the conflict"

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Lab D Senior Member • Posts: 6,938
Take one look at the 70-200mm F/4 lens for the A7
1

For a couple short focal lengths the A7 can be small, but for longer focal lengths it becomes as big as other FF cameras. Focus won't be as good either.

I saw this in another forum and it speaks volumes.

http://camerasize.com/compact/#487.392,380.294,ha,t

or this...

http://camerasize.com/compact/#487.395,380.306,ha,t

I'll take the larger grip and better focusing.

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Lab D Senior Member • Posts: 6,938
The truth about the A7's large size.
1

captura wrote:

Banger wrote:

1, OK ..but no big deal with newer technology. IQ probably very close, more dependent on particular lens used rather than anything else. I suspect Canikon are starting to get worried, particularly Nikon as the Sony is likely using the same D800 (sony) sensor.

2. Sure, paper thin DOF easier if that's where you get your jollies, but most folks are more interested in the benefits of greater DOF with u4/3 & APSc.

True enough. I thought the DOF with APS-C was a good compromise, but now NEX is dead.

3. Body size comparable, but Sony requires 35mm sized lenses, and that is a very big heavy deal, particularly if you want f2.8 or wider lenses.

The Zeiss EF FF lenses I handled, a 35mm/2.8 and a 50/1.8 were sureprizingly smalll. Longer lenses will be large. Old E-mount APSC lenses still work OK, but only 10mp on A7 and 16 mp on A7r.

and ???

Rob

The E-M1 grip is slightly larger than the A7 and I prefer the Canon grips over both. Of course we already know the A7 doesn't focus as fast the E-M1 and can't do what a DSLR can do.

Now about that size....

http://camerasize.com/compact/#487.395,380.306,ha,t

It is too close to other FF cameras that will function better.

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Acrill
Acrill Senior Member • Posts: 1,934
Re: The truth about the A7's large size.
5

The E-M1 is a feature-packed flagship model.

The A7 is a bare-bones budget model.

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SaltLakeGuy Forum Pro • Posts: 11,530
Something for everybody
1

there is no question the A7 isn't going to have the blinding fast focusing (saw a sample video on Youtube to confirm it). Not to mention one of the primary reasons to get an EM1, the IBIS which is like SteadyCam on video and a savior for those of us who are shaky shooters. I see the 7R being the hero with that huge sensor advantage in a small package. Neither are going to make it as a sports shooter camera. I'm sure they will hit their target audience just fine.

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Martin Ocando
Martin Ocando MOD Veteran Member • Posts: 4,991
THIS is the Difference
4

captura wrote:

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

1. The sensor is 4x bigger.

2. Depth of field is radically different.

3.

http://camerasize.com/compact/#482.366,487.392,ha,t

And this is a 70-200 f:4 compared to an equivalent but faster lens.

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Art_P
Art_P Veteran Member • Posts: 9,870
And yet
1

for some reason a few people think of the A7 as the E-M1's main competition.

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Art P
"I am a creature of contrast,
of light and shadow.
I live where the two play together,
I thrive on the conflict"

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Vlad S Veteran Member • Posts: 3,667
Matter of choice
3

captura wrote:

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

That is not µ4/3 vs. FF comparison, because E-M1 was not built for sake miniaturization alone. Why not compare A7 with E-M5, or E-PM2, or Panasonic GM1?

http://camerasize.com/compare/#387,487

Vlad

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Lab D Senior Member • Posts: 6,938
Re: Something for everybody

SaltLakeGuy wrote:

there is no question the A7 isn't going to have the blinding fast focusing (saw a sample video on Youtube to confirm it). Not to mention one of the primary reasons to get an EM1, the IBIS which is like SteadyCam on video and a savior for those of us who are shaky shooters. I see the 7R being the hero with that huge sensor advantage in a small package. Neither are going to make it as a sports shooter camera. I'm sure they will hit their target audience just fine.

Once I saw the pro-Sony guys admitting right away the A7 won't focus as fast as M43 cameras, I knew it would not be good camera for some. After seeing the 200mm lens, another group is going stop considering it.

btw, I use the EM1 to shoot sports and it does very well.

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Paphios Regular Member • Posts: 395
Re: OMD E-M1 vs Sony A-7, What's the Difference?
1

The OMD E-M1 has native lenses and is a mature system.  The Sony is a beta test.

Grobb
Grobb Senior Member • Posts: 1,229
Re: OMD E-M1 vs Sony A-7, What's the Difference?
2

captura wrote:

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

1. The sensor is 4x bigger.

But the IQ is less than .1x better up to about 3200 ISO (depending on what lens you use), so what is your point? If you shoot primarily in extremely dark environments (over 50% of the time), maybe FF is what you need. If not, m4/3 cameras do very well, especially when used with a flash.

2. Depth of field is radically different.

Only if wanting/needing "radically" shallow DOF is important to you. Some people do not care about or want paper thin DOF, they are more concerned about IQ, fast/accurate focus and choice of great lenses, which cost much less than FF high quality lenses, by the way.

3. If you want a camera and lens system that cost less, weighs less, is easier to shoot with and has very similar IQ, m4/3 is what you will choose. If you would rather lug around 2-3 times the weight, and pay 2-3 time the money for approximately the same IQ for the same lens quality/focal lengths, use a FF system.

How hard is that to understand? The GM1/GX7 with the new 15mm, 12-32mm, and 35-100mm lenses would be a very nice/practical 3 lens kit system for what most enthusiasts are interested in using!

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Digitall
Digitall Regular Member • Posts: 417
Re: Now add lenses. (N/T)

(N/T)

Zenjitsuman Contributing Member • Posts: 790
Re: OMD E-M1 vs Sony A-7, What's the Difference?

If you can use your M4/3 for tele lenses, size and weight advantage in reach is in M4/3 favor.

For 35mm and 50mm and wide angle, manual focus FF lenses especially Leica M lenses are tiny.

For wide angle you can get some nice Canon FDn 24mm f2 lenses which is a 12mm on M4/3

and a 16mm on APS-c.  Good 16mm and 12mm f2 lenses are kind of expensive and I got my

like new Canon Fdn for about $275 a year ago.

Only thing is you have to lug you M4/3 around, its not so bad he-he.

Optech makes a reporters camera strap that can hold 2 cameras I think that the above solves

the problem of the large FF lenses, M4/3 definitely has its place especially with IBIS for tele lenses.

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CharlesB58 Veteran Member • Posts: 7,623
Re: THIS is the Difference

Martin Ocando wrote:

captura wrote:

M43 vs FF full-frame. Same size and weight.

http://camerasize.com/compare/#482,487

1. The sensor is 4x bigger.

2. Depth of field is radically different.

3.

http://camerasize.com/compact/#482.366,487.392,ha,t

And this is a 70-200 f:4 compared to an equivalent but faster lens.

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We don't even need to go into size difference. If someone doesn't recognize the overall difference in usability, controls, and quite probably durability, then let them choose based strictly on sensor size and body size.

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