Weird black line/artifact in photo? (XT4 + Canon FD)

Hi,

I just got a K&F Adapter to use Canon FD lenses on my XT-4.

I went out just now and took a few test shots when it was getting dark. I am using a 35mm 2.8f. For some reason I get these weird horizontal lines accross the whole picture. But not in all pictures. Some are also without. For example these 3 images, taken very quickly after each other:

white line accross the screen

black line accross the screen

no line accross the screen

As said, there is very little time between these images. I did not edit them, these are JPEG exports from the unedited RAW files (out of lightroom). Shot in Aparture priority mode. They were all shot wide open at f 2.8.

My XT4 is only a few months old. I have not encountered anything like this before. Does anybody have an idea what causes this? I will still go out with different lenses to test, to see if the problem persists. But maybe somebody recognizes this problem and can tell me if I need to send it in for a repair or something....

Thanks!

Hmm, where it shows (white line in the first photo, and black line in the second one), it seems to be in exactly the same place (I didn`t check thoroughly, but it seems so)...?

I don`t think it has anything to do with the lens itself. If I had to guess, I`d suspect sensor (readout) issue, or memory card (saving) issue, or something in-between, corrupting the image. It could hopefully be a temporary glitch as well, never to repeat again.

If it does repeat, it would be good if you can replicate the issue at will, seeing exactly what causes it - for example, EXIF viewer here shows that the first two photos (showing the issue) are shot at 1/20, while the third one (without the issue) is shot at 1/15... for whatever that is worth, if anything.

Do keep an eye on it for sure. If it keeps repeating, it might be needed to be sent in for the repair (preferably with reproducible steps to make it happen, but possibly sample images could be enough, too) - but do make sure to change your SD card first, just in case.

Hmm thanks for all the replies!

The problem is I can not seem to reproduce it. This has happened on 2 occasions now. Not all photo's have this problem, but some do. Both times was the 35mm Canon FD lens. I have just shot 200 pictures with different lenses of the wall here, and no problem. I have tried different shutter speeds and ISO settings, apartures, etc. Does not happen anymore... I can also not reproduce it with the 35mm...

I have already in between the 2 occurences formatted my SD cards. I think it is not a problem with the SD card though because I have 2 SD cards in there, one for Jpeg one for Raw. the lines/artifacts are also there on the SOOC jpegs...

I guess I'll send the store where I bought it an email to see what they say...

So little update, went out again today, this time with  the 50mm 1.4 (canon FD). Same thing. Shot about 100 images, 5 have these weird artifacts. Nothing out of the ordinary with these specific images. Same settings as other images that do not have that artifact...

When I have time this week I will stick a fuji lens on there and see if I can get the same result there. But even if I don't I feel like it might be a sensor problem and I will probably send it in for repair..

I am just a bit anoyed that I can not reproduce it consistently because if I send it in and they then just say there is nothing wrong with it, I need to pay for the research and sending...

I was also going to suggest you try a different SD card.  I've seen this happen with many different camera brands.  The intermittent nature makes me believe you sensor is fine and its the SD card.

Good luck,

Morris

I wonder if it has anything to do with your setup (record raws on one SD card and JPGs on the other).

Have you tried a different setup, such as record raw+JPG on one card and if that card fills, change to the second card.  Yet another setup would be to record raws only.

It's an interesting problem.  Good luck with it!

Haha, interesting is one word for it ;). But since the problem is on both sd cards that seems unlikely or?

My assumption for now was there is something wrong with the sensor because the line is on both the jpg and the raw file...

erikjanneman wrote:

Haha, interesting is one word for it ;). But since the problem is on both sd cards that seems unlikely or?

My assumption for now was there is something wrong with the sensor because the line is on both the jpg and the raw file...

Two cards with the same error is and in both RAW and jpeg is unlikely so I agree with you.  Changes lenses, changes cards and see what happens.  Good luck,

Morris

If on the same place, it must be sensor or sensor readout issue. Especially because it is one single line. Data corruptions are most often in blocks.

I would indeed start a conversation with either Fuji or your dealer.

Does the effect change with use of electronic shutter or electronic first curtain?

So it has been a while but finally yesterday I got my camera back.

I sent in the camera and the store where I bought it sent it through to Fujifilm.

2 weeks later it was ready, so I picked it up. Fujifilm said they took many pictures but could not reproduce the error. They then said they "adjusted" the sensor and updated the firmware. Whatever they mean with adjusted I do not know.

I first took about 300 pictures in the camera store. Everything was fine. Took it home, and started shooting some more and the issue was there again. So next day I went back to the store, gave them the new files with the issue and told them to send it back to Fujifilm.

They did, and this time it took ages. Fujfilm sent it from the Netherlands (where I bought it) on to England. After a few weeks they said it was done. They found the problem, fixed it and would send it back to the store. They do not specify what the problem was.

So yesterday I finally received my camera back from the store and I have started shooting again. So far no problem. But I have no idea what they did and I really hope the problem does not come back.

It definitly is my camera though. I marked the inside of the battery door with a little scratch because I wanted to see if they would maybe just replace it.

Good to hear the problem is resolved. Funny they sent it to the UK. I got my XT1 repaired once and had to send it from NL to Kleve in Germany.

sir_c wrote:

Good to hear the problem is resolved. Funny they sent it to the UK. I got my XT1 repaired once and had to send it from NL to Kleve in Germany.

Well I am not sure if it is resolved ;). I hope so. Will go out shooting a bit more tomorrow. And will also put it in the fridge maybe to see if the temperature was a factor (seeing as the problem only occurred for me during last winter).

But I am hopefull.

I ordered my camera at Cameranu.nl btw. And after I asked them to come up with a solution for then fact that I was out of camera for a long time (including my planned vacation to the Azores) they sent me a loan XT-4. So even though it was quite a few months that I was without my own camera, I wasn't without a camera.

Fuji service UK gets consistently good reports.

Morris0 wrote:

erikjanneman wrote:

Haha, interesting is one word for it ;). But since the problem is on both sd cards that seems unlikely or?

My assumption for now was there is something wrong with the sensor because the line is on both the jpg and the raw file...

Two cards with the same error is and in both RAW and jpeg is unlikely so I agree with you. Changes lenses, changes cards and see what happens. Good luck,

Morris

Hi Morris. If the OP want to find out and pin point what is the actual problem then no, don’t change the lenses and cards (at the same) time. Do an elimination process and change only one thing at a time.

The OP has to take the SD card that was used, and the Canon lens and adapter that showed the issue and take a Fujinon lens and try swapping only the lenses first. Make sure you haven’t changed any menu settings and set the camera the same way it was. Make sure to turn off the camera before changing lenses. Perform these same steps multiple times and then check your images.

If the problem shows up see if it only happens with a certain lens. If the problem appears with BOTH lenses then is not a lens issue and at that point swap the SD card with a different one and repeat the steps above.

Good luck hope the OP finds the problem 👍