Jump to content

Purple Image Error X-T2 (and X-pro 2) with backlight


Guest asgy photography
 Share

Recommended Posts

The effect is very dependent on the angle and the position of the sun - very low sun (just before sunset) leads to it easily, especially with certain lenses like the 56mm/1.2, it happens most easily with this one. But i.e. in the mountains, with the sun high up, it does not happen at all.

Link to post
Share on other sites

The effect is very dependent on the angle and the position of the sun - very low sun (just before sunset) leads to it easily, especially with certain lenses like the 56mm/1.2, it happens most easily with this one. But i.e. in the mountains, with the sun high up, it does not happen at all.

 

 

So to avoid the problem one has to opt for the most unphotogenic light possible? Sweet!

 

…Over the years with the Fuji system I've seen a lot of various sensor artifacts. As for the most annoying artifact, the award definitely goes to what I call an "AF pixel shadow". When you do a complex postproduction on darkly exposed files (star trails, focus stacking etc), oftentimes the entire cross-sensor AF zone suddenly presents itself as a weird pattern contained in a rectangle. The only workaround is to camouflage it with some compulsory artwork.

 

And the purple sensor flare always seems to ruin the best candid shot in the series. That's why I call it "Murphy's flare".

Link to post
Share on other sites

Is this only happening when the sun is at the very top or just outside of the frame? i have not experienced it and like shooting into the sun but I usually the sun is either seen in the frame or hidden behind an object in the frame. Looking at the photos in this thread where the issue occurs, it appears the sun has been out of the frame. I'm curious to know what triggers the issue.

Link to post
Share on other sites

So to avoid the problem one has to opt for the most unphotogenic light possible? Sweet!

 

So, do you call "photogenic" to shot with a glare in your frame? do you really like it?

I all the time guessed I had to avoid the sun hitting my lens although it was not in my frame, just to care a little about the final picture, you know...

cheers

Link to post
Share on other sites

Advertisement (gone after registration)

You may need to wait a few years before you can get a camera that can take those shots, by overexposing by that much you are lighting the inside of your camera like a Christmas Tree and all bets are off for quality. The current crop of cameras can only handle 13-14EV. The Finepix S5 Pro could do that 10 years ago so sensor technology has not improved much for dynamic range but as we all know it has in other areas.

 

The cross hatch pattern are demosaic patters resulting from missing recognizable color information - you get similar patterns at very high ISO and it ain't pretty close up but not directly visible by the time you have something print worthy or downsize for computer and tablet screens.

 

If the shots were actually "keepers"  there is still a lot you do to recover in post. I have attached my take on it ( I had to compress a little to get the size down).

 

The Trees: I ran max Highlight Recovery and tight Curves on one, Knocked out Magenta and Purple on one, and show the original for the sake of the Histogram and Blow-Out warning.

post-2357-0-80687000-1482814229_thumb.jpg

post-2357-0-73270200-1482814305_thumb.jpg

post-2357-0-52718900-1482814329_thumb.jpg

post-2357-0-57272600-1482814348_thumb.jpg

Edited by asathor
Link to post
Share on other sites

  • 3 months later...
  • 2 weeks later...

Sorry, but I have X-T2 since october 2016 as profi user and w/o any purple artefacts. This purple "mistake" is not problem of Fuji sensor, but it is mostly mistake of photographer. The same purple flare with diverse artefacts is to see on other cameras as CaNikon/Pentax/Oly etc. To solve this problem (when needed) is possible RAW editing in Rawtherapee with custom demosaic settings.

 

Talbot Trenton:

 

What is photogenic light? :o

Edited by hildasea
Link to post
Share on other sites

Join the conversation

You can post now and register later. If you have an account, sign in now to post with your account.
Note: Your post will require moderator approval before it will be visible.

Guest
Reply to this topic...

×   Pasted as rich text.   Paste as plain text instead

  Only 75 emoji are allowed.

×   Your link has been automatically embedded.   Display as a link instead

×   Your previous content has been restored.   Clear editor

×   You cannot paste images directly. Upload or insert images from URL.

Loading...
 Share

  • Posts

    • After upgrading my iPhone to IOS 15 the Cam Remote app fails to connect to the camera (X100V). Re-installed the app - no change. Anyone with the same issue, and hopefully a solution?
    • No, perhaps I was not clear. Just about the only thing that keeps you from using es is having a flash unit attached. I regularly use electronic shutter with very long exposures when I am outdoors, it saves wear and tear on the mechanical shutter. So something else is going on. Try a full reset and see if that clears it up as well as making sure you have the latest firmware installed. Having tethering would be nice, but Fujifilm seems to have saved that for the X-T3, X-T4, etc.
    • Ah, that's probably what it is then - I'm using a slow exposure and no flash. I just have the 1st and 3rd options on my menu. I bought a mirrorless camera because I thought it would be better than my dslrs but it's pretty useless for what I wanted it for. No live view/tethering  And can't even use the electronic shutter  Yet I can take a 4k video. It doesn't make sense that I can do that but can't take a still.  Louise  
    • That is odd, there are very few other settings that limit using es. Having a flash unit attached is one, but I would have thought that would also keep you from using ms+es. Mines does this: Have you upgraded to the most recent firmware? This may sound drastic, have you copied you settings down somewhere and tried a full reset?
    • Thanks for the reply. I don't have that choice in my x-t30 menu  It's just MS or ES/MS with ES for fast exposures i.e. 1/4000s Louise
×
×
  • Create New...