Tale of two X100s
Well, not two X100s, but a silver X100s I borrowed from a friend and a black X100 Limited Edition.
Every since the release of fw 2.0 for the X100, I've been having GAS. While looking for a used X100, I found someone having fire sales of brand new X100 LE's for around US$830. Naturally, I took it.
The X100 LE's EXIF tells me the lens is made in Feb 2012, so no SAB problem. Serial number starts with 21P.
I did some comparisons and here is what I found:
- X100 AF is very good with fw 2.0. X100s PDAF is only faster if it can find some strong vertical contrast. But I found that in some cases, PDAF actually hampers AF speed as I found the X100s making a full stroke of the AF mechanism while the X100 found the focus without the full stoke movement. I think Fuji definitely needs some refinement on the PDAF algorithm. I don't know whether the Phase Detection sensors are horizontal contrast sensitive or vertical contrast sensitive or a combination that spreads across the PDAF area. Suffice to say, they're definitely not cross-type sensor.
- Focus peaking seems a little different. X100 shows a stronger highlight even when both cameras have the same settings. So I found focus peaking a little easier to use on the X100.
- CDAF with both X100 and X100s are not as good as XE-1, which I also have. XE-1's latest fw allows horizontal contrast detection. X100 and X100s cannot AF on anything with this type of contrast. Hence XE-1's AF feels more sure footed on a wide variety of subjects.
- X-Trans definitely has the edge in resolution and noise, even the X100 has only 12MP. No contest there. I think it is down to the user preference of X-Trans CFA vs Bayer CFA. I've no problem with X-Trans CFA with Iridient Developer.