digitalhecht

Yes, oil spots!! That's what they appeared to be as they were streaked/smeared. Very odd. I haven't seen such spotting on any other camera I own.

I meant to mention, that on the work order, it said: "Sensor is filthy. Needs serious cleaning.":-)

Just checking back in here. After almost a full 8 weeks, my SDQ has returned from Japan in tip-top shape, at no charge. Needless to say, I will be sticking to not touching the internal filter ever ...

I thought you might all find this interesting (amusing?). I got a VM from Sigma in NY regarding my sensor cleaning. It turns out that it needs to be sent to Sigma Japan for further assessment, ...

True. I tried it myself with Kolari’s hot mirror filter and the blue cast is quite noticeable.

Well, to be clear, each swab swipe was after a test shot with and/or without internal IR filter. It just got progressively worse. Sending it to Sigma today. I am still shocked that my powerful ...

Thanks, Tom. I am in the USA. Ugh. Most definitely a job for Sigma. I have already put in a repair order. (I just hope the sensor isn't damaged.) Needless to say, I won't be removing the internal ...

Oh dear, oh dear, oh dear... I have been manually cleaning my Sony's for years with no issue. This is my first time cleaning a Foveon. I used microfiber APS-C (16mm) swabs with VSGO's sensor ...

Thanks, dmmcoy and danski0224. I have similar. I ordered APS-C-sized swabs as I only have FF on hand. I am familiar with the single-side swipe technique. So I am comfortable with doing it this ...

Specifically on a Sigma SD Quattro... In the process of swapping the internal SDQ filter for IR tests, despite my best efforts at dry blowing (via Giotto Rocket) before every re-seat, it appears ...

Thanks to all who helped me out here. After much testing, I have decided to keep my IR and Foveon love separate-mostly to do with workflow and results. I'd like to think I gave it the old college ...

Yes. The 590nm filter I have is a red filter. But I don't know if it is also passing IR. OK. So if I use the image above called "Raw Channel R". But once in grayscale (and it already is exported in ...

OK, xpat. Thanks for your help! Making progress, I think... Amazingly, my Sigma 17-70 arrived today just two days after ordering from Japan on eBay (WHOOT!). So at least now I can take pictures ...

Thanks @danski0224. This AM I used a Nikon O-56 on my full spectrum-converted A7RII. I decided to try setting the WB as used on the Sony (3100K) on my SDQ (and same filter) in both STD and T&O ...

I was wondering if anyone knew why the stock iOS Camera Panorama mode doesn’t capture a full (rectilinear) 360 shot. While there are third party apps that do it, the stitching isn’t as good. I ...

Thanks. I wasn't aware of the T&O mode! Luckily, mine shipped with 1.13 firmware. So I was all set there. I shot in T&O and it looks more red now: But using any other filter (again 470nm, 590nm, or ...

Oh dear, oh dear. I am obviously missing a step here... Got my brand, spanking new SD Quattro yesterday. The good news is that in terms of color, while using an external hot mirror filter (Kolari) ...

Thanks, JohnK. That lens list is relevant to me as I am eyeing an SD Quattro bundled with Sigma 30mm f/1.4 DC DN (which appears to be near extinct on its own in SA mount). And that list says this ...

Thanks, expatUSA. Thanks for providing such a thorough response to my queries. This post should be a stickie! I AM looking for the Kodak Aerochrome look. Despite many tips and tutorials (and ...

Thanks very much, Col. I have been looking for such a forum on and off for years. So this is great! I have applied and look forward to participating.