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-   -   X-S1 EXR "DR" test... (https://forums.steves-digicams.com/fujifilm/199793-x-s1-exr-dr-test.html)

SIMON40 Jun 20, 2012 4:05 PM

X-S1 EXR "DR" test...
 
2 Attachment(s)
Late evening and dull at the rear of my flat- a genuine test for the "DR" mode.
EXR selected and "auto" DR in the menu.
A great effort in my opinion- hand held-
1/40th sec,f2.8 DR400% iso 500.
Much like what the eye sees here... :)

Ozzie_Traveller Jun 20, 2012 6:11 PM

G'day Simon

Two things mate -
a) great to see you also have great taste in new cameras :-)
b) my experiments with the exr side of things do not seem to show a huge difference - am I missing something? ... or is it more subtle to the eye?

If you are finding success with exr mode, could you perhaps post 2 pics, 1-with exr, 1- without and let me see the difference

I'll do the same with something from my end too
Regards, Phil

SIMON40 Jun 20, 2012 6:23 PM

Interestingly,my earlier "playtime" with the EXR DR mode didn't reveal huge benefits- though to be fair,the conditions I was shooting in didn't really warrant it.
However,it really does come in to its own when it is really needed- such as when the light's dropping and you'd usually be left with a burned out sky to get the buildings exposed correctly or a natural sky and dark,underexposed buildings.

I will do the same tomorrow when the light's dropping- one in EXR DR mode and one in Full res' Program mode so you can see the difference. (DR will be set to Auto...)

It seems really effective when needed and certainly is a handy quick shot twilight catcher- not requiring a tripod or a steady hand through the usual 3 shot burst HDR type modes.

I will say,however,that the dynamic range of this camera in the "standard" 12mp PASM modes- with Dynamic range set at 100%- yields very good results for a smaller sensor. :)

Cresho Jun 21, 2012 1:21 AM

The benefits are subtle. I noted the orb phenomena occurs in exr mode only. Hope you guys can refute this theory or other observer's observations.

SIMON40 Jun 21, 2012 3:38 AM

Well- I haven't seen any "orbs" yet- in any mode...
Fingers crossed it stays that way...! :)

SIMON40 Jun 22, 2012 5:34 PM

2 Attachment(s)
Here's a direct comparison with standard Program mode and EXR DR mode- DR at Auto.
On this given shot- very low light with sun blazing through a gap in the cloud- the main difference is the highlight retention using the DR mode.

Ozzie_Traveller Jun 25, 2012 4:32 PM

G'day Simon

Okay mate - here's some of my results

Lighting conditions were "late afternoon, cloudy, unexciting lighting overall" etc etc. Funnily enough, following earlier experiments with images & printing, the camera was set to 3mpx [2048 x 1360px] mode - so all these are "Small" mpx images to start with

I have shot the images as per=
1- AEB with +/- as 0,7EV and
2- EXR - auto

The AEB at -0,7EV was just too dark to bother with, so I haven't included it into this series

Each image below was
a) cropped at 1/3 of 2048 x 1360px
b) pasted into a new canvas
c) text added
d) resized to 800 px wide
e) saved as jpg to 200kb size for posting

http://farm6.staticflickr.com/5080/7...1e8e50ee_o.jpg
C-Towers, Gill Street-1 copy by ozzie_traveller, on Flickr

http://farm8.staticflickr.com/7126/7...9cd1b011_o.jpg
C-Towers, Gill Street-2 copy by ozzie_traveller, on Flickr


Okay - each image as per +0,7EV certainly is a better looker than the normally exposed image, and the EXR image does show a bit of colour. Maybe I was expecting more than has been delivered ??

Open for Comments
Regards, Phil

SIMON40 Jun 25, 2012 5:29 PM

My experience of the "DR" EXR mode (using Auto DR) is that it seems to be most effective when it is really needed- which I guess is the way it should be.
Strangely- and thankfully- it seems to lift the shadows when the highlights are well within limits- and it focuses on highlight retention when they're close to "blowing".
It certainly wouldn't be as effective as bracketing exposures and "HDR-ing" them- but definitely has its use as a quick shooter in challenging light when pressed for time.
It would have been nice for Fuji to include a HDR facility on the X-S1- especially as it's fast becoming a "standard issue" on most cameras spec' sheet...

Ozzie_Traveller Jun 28, 2012 5:57 PM

G'day Simon

Had an curious thing last night when using EXR ...
I was aiming at the heat rising off a bbq cooktop and the way it was disturbing the clarity of the background
I wanted to expose for the background but focus on the bbq cooktop

I went to EXR auto, then flicked from AF to manual focus
and the camera continued to autofocus between the cooktop & the background ... !

To get the image I was after, I had to abandon EXR for P-A-S-M mode [chose P], focussed on the cooktop but metered for the background & got the shot I was after

But the over-riding of manual focus when in EXR mode was curious ... any thoughts?

Regards, Phil

SIMON40 Jun 28, 2012 6:26 PM

Indeed- in EXR "Auto" you cannot manually focus- autofocus kicks in.
I'm guessing that the on-board trickery which senses the scene in Auto- such as macro or night scene,landscape etc.. needs the AF to assess distance,thus the scene- in addition to the lighting.
Manual focus IS available in the manually selected EXR modes (DR/SN/HR)- and is also available in the standard Auto mode... :)


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