Hi, I have Sekonic L-858D-U that seems to be underexposing by 1EV and I'm trying to figure out if that's normal or if I should send it for repair. I've had it for a while, but never really used it much. Recently I decided to compare it to light meters in my cameras and to Hasselblad PME45 meter. All the various meters I tried are very consistent, within just 1/3 stop of difference at most. But the Sekonic is full stop underexposing both in incident and reflective metering. Here's the equipment I compared it with: Canon 5D IV - Spot Metering Canon EOS 1V - Spot Metering Hasselblad PME45 - Spot Metering and Incident metering iPhone 11 Light meter camera app for reflective metering Test 1: I took 18% gray card, placed it in various lighting conditions - indoor, outdoor, direct light, indirect light, low light, strong light, etc. I then used the various cameras/light meters and made sure sufficient amount of view is covered by the meter and measured. Sekonic was consistently 1EV underexposed. Both in incident and reflective spot metering. I tested at ISO 100, 400, 3200. Test 2: I repeated test 1 procedure, but instead of gray card metered of off solid surfaces: walls, sky, floor, etc. Same results as Test 1. I tested at ISO 400. Test 3: I setup flash lights, set camera on tripod at 1/200s shutter, ISO 100, manual flash, took incident flash reading with the Sekonic, adjusted camera aperture, took a shot of 18% gray card, measured brightness in photoshop, which showed under exposed as I was expecting RGB of 127 and it was below it. I then added +1EV compensation on my light meter, metered the flash again, adjusted light output until meter showed the same aperture as on the first meter reading. Then again took shot of gray card, loaded to photoshop, cropped in the gray card and reading was 128, which is what I expected. I then repeated the same procedure with ColorChecker Passport and measured the 18% patch (4th patch from bottom left) and got perfect result. This concluded my testing. I tested at ISO 100. I have then modified the HW calibration in the meter to add +1EV. Now the question is, is this normal or should I send the meter for repairs/factory calibration? On hand I'm thinking it's no big deal, I was able to dial in the correction. On the other hand the manual states that the maximum amount of HW adjustment is +-1EV in 0.1EV steps, which means if I ever needed to adjust it further than 1EV I won't be able to at a HW/system level. I would then have to use other means like manually dialing in exposure compensation when I meter. Oh, and I did check to make sure there wasn't any custom Sekonic profile or EV, filter adjustments loaded in the Sekonic meter that would modify exposure readings. Thoughts? Thank you.