Battle crop mode a7s & fs100 iso

[tom1]

Hi I am thinking to get a7s ,I hope to find some answer
1. Is 7s (in crop mode ) is so good in low light situation like fs100 ?
2. Is crop mode in 7s is noticeable worse ?
3. is anyone match 7s with fs100 in post production ? How easy is it ?
4 I there any limit in one long record ( 12min ? 29min ? ) ?????
5 On 64gb card, how many minutes can I record ( XAVC )
THANKS

 

[tscav]

Hi Tom
since nobody else answered I'll give it a go - you other tech guys correct me if I'm wrong.
1) better
2) than what?
3) works fine in premiere - a bit more heavy on your computer than avchd but not much.
4) Limit is 29 min. - this is one of the few advantages the fs100 holds over the a7s - along with xlr and much better preamps - which is a bit deal.
5) 64gb card shows 2 hr 41 min of record time

I used to own the fs100 and liked it alot - but the a7s is a very serious contender, and imo beats it IQ wise.

 

[Samuel H]

You may want to check my compilation of test charts from www.slashcam.de (I didn't include the FS100 but they probably tested it too).

 

[Erik Wittbusch]

I think:
1) A7s is approx. 2(3) stops better in lowlight, depending on your picture profile
2) cop mode on the A7s is not really worse, you just loose a bit of resolution
3) to match both, it won't be that easy. A7s has cinegammas, FS100 has no cinegammas
the gammas will be different, but I think you can match both of them via picture profile

 

[Samuel H]

I decided I was interested

FS100:

a7s, FF 24p-30p:

a7s APS-C, 24p-60p:

And just for fun...

C100:

(edit: I haven't become resolution-obsessed, I still value DR more than resolution)

 

[maarek]

C100 looks great. Both the FS100 and a7s are using sharpening quite a bit more. The numbers look worse on all of them except C100.

But man, I just don't trust Slashcam. They made so bad tests ages ago that it will take years or maybe never for me to trust them. Even those crops are different.

 

[Samuel H]

Slashcam doesn't usually talk about the settings they used on each camera. I don't see any sharpening on my a7s. But I haven't tested it against a chart yet (maybe next week?).

 

[bill totolo]

Samuel, out of curiosity, is there a chart that compares line pairs resolved between the A7s in APS-C mode VS the PMW-F3?

 

[jurny]

i just did a project with a7s + F3 and to me F3 owns with sharpness and 10bit goodness.

 

[Samuel H]

This is the F3, as tested at www.slashcam.de
Pretty nice indeed.