Hi guys, whats your take on replacing C100 with A7s for weddings? I have been using c100 for weddings but looking at the small form factor and superb low light capabilities of the A7s, they are really attractive. I just need to get a metabone adapter and can continue to use all my gears. One thing I will miss badly is the built in ND filter. I will not consider 5d3 due to lack of tilting screen. C100 is a great camera with great ergonomics but after prolong use with lots of moving around, it is still heavy in my opinion.

My c100 can be used for corporate gigs where the pace is normally slower and does not require me to move around fast.

It's a bad move based on my experience. I use an a7s as a "c" camera with 2 c100s and the c100s always produce better images in iso less than 8000. The skin tones on the a7s can be weird, s long 2 is a lot more work to grade, and the lack of ND filters is a major pain. Also no waveform/rgp parade on the a7s. The metabones adapter can be unreliable too (have to reseat the lens) .

I've used the a7s on about 3 weddings now and would never use it as a main camera to a c100 on a wedding.

It sounds like size is the biggest issue for you. I don't know the A7s, I confess, but experience and good comparison videos have shown how the C100 outperforms the 5D3 in terms of dynamic range and detail. (You mention the tilt screen being the biggest factor there.)

I can't comment on the video quality of the A7, but it sounds like you may be undervaluing the C100's video quality compared with other considerations.

If c100 image quality loses to a7s, I will be very disappointed. I've seen quite a few review video and came to the conclusion that a7s image wins 5d3 hands down in terms of low light, sharpness and details but loses to c100 in terms of details and sharpness. Frankly speaking most wedding videos will be watched online and after compression, the differences is not that great between c100 and a7s. C100 still wins for sure but not that much.

For weddings, I am starting to be more incline towards mobility and a overall lighter load after shooting for many years on a heavy load. Ultimately capturing moments counts more than image quality for wedding and a7s has pretty good image too, it's not as if the image is terrible. I've upgraded from 5d2 to c100 for the superior image quality and ergonomic. I skipped 5d3 due to not that impressive image and no tilting screen. Now that a7s came with tilting screen, excellent low lights, much better image quality than 5d3 and small body, the temptation is there.

One random comment: "image quality" is subjective. I personally prefer the 5D3 image to the C100. Sure, the C100 is demonstrably sharper with better dynamic range, but that's not how you gauge image quality -- you ultimately just have to look at the picture and see how it makes you feel. Maybe softness can be more flattering to skin; maybe sharpness can look "too real"; maybe lower dynamic range can make for a more dramatic image. And I know I'm not alone in this taste -- Ray Roman, with the money to choose otherwise, also prefers the 5D3 over the C100/C300.

I guess what I'm saying is: if your eyes like the A7S better than the C100, despite what the charts say, then why not use it as your A camera, especially since you seem to be liking the ergonomics of it as well?

Just received my A7s a couple of days ago and was actually thinking the same thing. In fact, for tonight's wedding I'll be using the A7s as my A-cam and leave the C100 as B-cam. The small form factor makes it much easier to handle, not to mention the better EVF as well as 50p recording. It is also easier to fly with on a glidecam (had to remove 4 weights).

From what I've seen and the little I tried it so far, image quality seems to hold up rather well. Hopefully I'll be able to judge better after this wedding to see how both compare under the same lighting conditions.

Not sure but did the a7s not have a 30 minute recording limit? That would be one thing to consider as well.

Just received my A7s a couple of days ago and was actually thinking the same thing. In fact, for tonight's wedding I'll be using the A7s as my A-cam and leave the C100 as B-cam. The small form factor makes it much easier to handle, not to mention the better EVF as well as 50p recording. It is also easier to fly with on a glidecam (had to remove 4 weights).

From what I've seen and the little I tried it so far, image quality seems to hold up rather well. Hopefully I'll be able to judge better after this wedding to see how both compare under the same lighting conditions.

Hi Malcolm if possible please give your review after you tried it at the wedding. One of the factor is also the slow mo which can be achieve from a7s. Ability to shoot at 60-120fps is great compared to c100 which has none at all! Will you be using metabone adapter?

Not sure but did the a7s not have a 30 minute recording limit? That would be one thing to consider as well.

That will not be a concern to me as I seldom record more than 30mins non stop for weddings. Most speeches are 10-20 mins max. For corporate events with long speeches, I will still use c100.

One thing of concern will be the battery life. C100 battery life is very good and can run 3-4 hours non-stop.

Don't you shoot the ceremony? That's actually the only event at a wedding that will last longer then the camera can record continuously. There is a thread here about the battery life of the a7s, I thought I read you could do about 1,5 hour on one battery but I"m sure a7s owners will correct me on that if not right.

Not sure but did the a7s not have a 30 minute recording limit? That would be one thing to consider as well.

The A7s does have a 29 minute recording limit but I only use mine for the evening reception and bridal prep so it is not an issue for me - I can add that for me it outperforms my 5D3 in terms of detail/sharpness/dynamic range but also focus peaking and zoom/tilting LCD screen (5D has not this feature as apparently it would impact on weather proofing but A7s is weather proof so go figure Canon) also 50p recording

Pete

Not needing it doesn't mean it should be something to not consider, my gh4 also has that limit and I normally also don't use it to shoot a ceremony because that's what is my ax100 and cx730's are for but there has been a occasion I needed the camera for a longer continuous shot and the recording limit was a big pain. One of the biggest issues with the a7s would be in terms of use in a fast changing environment like weddings, there a c100 might serve you better as it's ergonomically more made to be used like a real videocamera. You also have to consider the shallower dof as that will make focussing even more tricky compared to the c100.
As much as I like my gh4 for any run and gun situation I shoot with my ax100 without much thought, I can nail each shot with that camera, my gh4 only gets used if I have more time to set up. Like Edward pointed out, choosing the a7s over the c100 could be a bad choice, especially if you shoot solo, not sure how many benefits the a7s has over the c100, except for weight and size? If that last is what you absolutely need then it's a more obvious choice but you have to consider that shooting with the a7s can be more challenging then with the c100.

You're right Noa but I've never handled a C100 so can't really comment - lack of 50p would put me off it anyway. I purchased the A7s primarily for dark evening receptions that I had previously shot with my 5D but lack of focusing aids with the 5D made it a pain. For the rest of the day my trusty EA50/CX730 combo works well.

Pete

My friend who just got an a7s, used it at a wedding in DC last weekend. I'm looking forward to checking out that footage.

As others have noted, I'm not sure it would make a good "A" cam. But for bridal prep and reception shots - yes.

I use my Nikon V1 in this manner and it is amazing. I can only guess the a7s is better.... will know more once I see the footage from it.

After shooting a whole wedding with the A7s as the A-cam, I must say I'm pretty impressed. From what I've seen so far, the footage holds up really well compared to the C100 and the PP5 profile should be easy to match the C100's WideDR profile. The reception was rather dark however the A7s' ISO made it easier to keep on using zoom lenses.

I am using the Metabones adapter and a variety of lenses both for full-frame as well as cropped, main ones being the 17-55 f2.8 IS, 11-16 f2.8, 70-200 f4 IS as well as the 24-105L, Samyang 35mm f1.4 & 85mm f1.4. I shot with crop-mode to avoid rolling shutter (still need to do some tests to check how bad it is when shooting full-frame though), although at times I did find it handy to switch to full-frame especially when using prime lenses.

I should have the trailer ready in a couple of days so I'll post it when it's up.

Below are some pros & cons based on my experience so far:

Pros:
- amazing high ISO performance
- weight & size (real plus for glidecam shots)
- 3 wheels make it easy to adjust aperture, shutter speed & ISO on the fly
- customizable buttons (magnify set to one of back buttons since camera is easier to hold this way due to position of record button)
- memories (slots 1 & 2 on the dial can be assigned specific video modes, so it's easy to save interior & exterior profiles, or for switching from normal framerate to slow-mo)
- EVF is a pleasure to work with considering how accurate it is

Cons:
- battery life is a nightmare even with metabones adapter set to green mode and camera in airplane mode (hot climate over here in Malta probably has something to do with this; only positive thing is that third-party batteries are cheap to get and seem to be quite reliable, although mine are still on their way)
- position of record button is frustrating and it's easy to start recording by mistake

Hi Malcolm whats the max time you are able to get with 1 battery? When using the 17-55 do you have to switch the mode to apsc? You will get a 1.6x crop?

Looking forward to your c100 and a7s footage to see if they easily match. Thank you!

Not needing it doesn't mean it should be something to not consider, my gh4 also has that limit and I normally also don't use it to shoot a ceremony because that's what is my ax100 and cx730's are for but there has been a occasion I needed the camera for a longer continuous shot and the recording limit was a big pain. One of the biggest issues with the a7s would be in terms of use in a fast changing environment like weddings, there a c100 might serve you better as it's ergonomically more made to be used like a real videocamera. You also have to consider the shallower dof as that will make focussing even more tricky compared to the c100.
As much as I like my gh4 for any run and gun situation I shoot with my ax100 without much thought, I can nail each shot with that camera, my gh4 only gets used if I have more time to set up. Like Edward pointed out, choosing the a7s over the c100 could be a bad choice, especially if you shoot solo, not sure how many benefits the a7s has over the c100, except for weight and size? If that last is what you absolutely need then it's a more obvious choice but you have to consider that shooting with the a7s can be more challenging then with the c100.

Coming from years of experience of using 5d2 before changing to c100 in wedding, I don't think using a7s will be a big challenge. Shallow dof definitely not a problem too. When I use 5d2 years ago, I frequently handheld it with zacuto z finder with no monopod and that makes me very mobile. I have pretty steady hands and with IS lens, monopod is redundant sometimes!

Given that a7s has 3 dials for aperture, shutter and iso, it should be much faster to adjust than c100 which is so dependent on the dial and this is one of the thing I hate about c100. There should be separate dials for aperture, shutter, iso and preferably white balance too! I guess the only thing I will miss about c100 is the built in ND filter.

By the way the metabones is not reliable at all (I've had two now, 1 mark 3 which I returned for the mark 4 and they both have the same problem) and the battery life on the a7s is about 1-1.5 hour running continuously per battery. Battery takes about 2.5-3 hours to charge.

Hi Malcolm whats the max time you are able to get with 1 battery? When using the 17-55 do you have to switch the mode to apsc? You will get a 1.6x crop?

Looking forward to your c100 and a7s footage to see if they easily match. Thank you!

Anywhere between 1hr and 1.5hrs. I've just realised I had display quality set to high though and according to the manual that tends to consume more battery. Haven't noticed any noticeable difference in terms of quality after setting that to standard.

APS-C mode can be left to auto so everytime you mount an EF-S lens (like the 17-55) it switches automatically (apparently this was only introduced with the metabones mk4). The APS-C mode gives 1.5x crop factor, so the 17-55 would be similar to a 24-70mm on a full-frame sensor.

As Edward mentioned, the metabones adapter may be unreliable at times. Once or twice I experienced an issue were turning on the camera leaves a black image. Switching off, re-mounting lens and switching back on seems to solve the problem. If I continue experiencing this problem I will consider asking for a replacement.

BTW here's the trailer of my latest wedding mostly shot with the A7s. This was all shot in XAVC 50p and with PP5.

1:29 - 1:43 is shot in 100p (so that's upscaled from 720 since timeline is in 1080p)
Shot at 00:30 is scaled to around 115%
Shots from C100 are at 00:21, 00:33, 01:27
Shot at 01:05 is from 6D (for vows I had C100 for safe shot, 6D on groom and A7s on bride)

Wedding Trailer: Claire & Lukas on Vimeo

BTW here's the trailer of my latest wedding mostly shot with the A7s. This was all shot in XAVC 50p and with PP5.

1:29 - 1:43 is shot in 100p (so that's upscaled from 720 since timeline is in 1080p)
Shot at 00:30 is scaled to around 115%
Shots from C100 are at 00:21, 00:33, 01:27
Shot at 01:05 is from 6D (for vows I had C100 for safe shot, 6D on groom and A7s on bride)

Wedding Trailer: Claire & Lukas on Vimeo (https://vimeo.com/103580226)

Thanks for the video. It looks good! To be able to shoot at 50p and have a choice on when to slow down 50% is really useful. Can see that the 6D image does not fits in well and it simply looks muddier compared to the rest. The c100 still looks more detailed to a7s. But given the size of the a7s, it is doing a good job too.

How's the physically handling of the cam compared to 6d and c100? You like it?

Thanks for the video. It looks good! To be able to shoot at 50p and have a choice on when to slow down 50% is really useful. Can see that the 6D image does not fits in well and it simply looks muddier compared to the rest. The c100 still looks more detailed to a7s. But given the size of the a7s, it is doing a good job too.

How's the physically handling of the cam compared to 6d and c100? You like it?

Thanks! I will probably end up replacing the 6D as well in fact if I'll manage to get a decent price for it :)

I love the feel of the A7s although the record button is in a rather odd location (albeit typical for Sony cameras since NEX were also similar). Having a good viewfinder really helps since it adds a third point of contact, considering that the C100's viewfinder is barely useable and that for the 6D we had to use the z-finder which although works really well adds another piece of gear.

Thanks! I will probably end up replacing the 6D as well in fact if I'll manage to get a decent price for it :)

I love the feel of the A7s although the record button is in a rather odd location (albeit typical for Sony cameras since NEX were also similar). Having a good viewfinder really helps since it adds a third point of contact, considering that the C100's viewfinder is barely useable and that for the 6D we had to use the z-finder which although works really well adds another piece of gear.

so the evf of a7s is good enough? c100 evf is really crap and can't really see the focus plus it look so small.
yeh, 6D should go as it is not in the league at all.

I love it and so do the people who I've lent the camera to so far. It's so crisp that I'm finding it easy to focus even with peaking turned off, and using magnification mapped to one of the back buttons to check focus when necessary.