u/Classic_Silver_9091

I was able to achieve 99.1 CRI when combining both the sunsy Shine and Yuji Sunwave+ lamps. Very cool!

The discount is not being applied at checkout even if I have more than 3 in my cart. I checked everywhere for the coupon and nothing

My findings using my new spectrometer. I forgot to include both the Ultra efficiency and Sylvania’s flicker videos but I found they were not detectable at 240fps.

For the Philips ultra definition, initially I bought them from Amazon but wasn’t satisfied with the SPD reading (because it was inconsistent with what other people were getting) so I bought some from my local store and tested them again and got identical results! Believing my spectrometer may be inaccurate I went back to the store and bought different variants of the ultra definition line like the BR30’s and 100w versions.

Then I discovered an older slightly worn box pushed all the way in the back shelf. It was the 60w daylights I initially tested but with 2021 posted on the bottom and the model number ending with an ‘A’. And to my surprise the SPD result was much closer to what I was expecting with noticeably better CRI.

I don’t know what Philips is doing with their new generation of daylight LEDs but what ever it is it’s not good.

The Sylvania’s were also disappointing since they advertise smooth SPD with zero blue and red spikes, I had high hopes even if the R9 wasn’t as good as the philips. Other people were able to replicate the advertised SPD so I can only think they’re doing the same thing as Philips with their new LEDs.

Lighting nerds will appreciate this lol. Just got a good quality spectrometer and tested all my high CRI light bulbs along with some other high cri light sources.

Violet pump LEDs are pretty remarkable when it comes to mimicking sunlights SPD. (GE sun filled and Sunsy shine)

A lot of the photos will reference the Feit electric bulbs from Costco with selectable color temperature. They seem to test the highest at 4000k. 2700k and 6500k tested the worst surprisingly since the colors in between are just a mixture of the two.

One interesting thing I found about selectable color temp bulbs that claim 90+ cri is that at some color temps they will actually score lower than advertised. I’m guessing they can get away with that by basing it on the average.

Finally caved and bought the new Hasselblad and honestly i’m impressed.

Testing the macro capabilities and sharpness of the new sigma 35mm f1.4 lens on my S1R ii. This was taken at the minimum focus distance and cropped down to 700% (second image)

ISO 800, Shutter 1/250, f2.8

Recording in 4k 10 bit mp4 at 30fps, 1/30 shutter and ISO locked at 12800.

I was using the crop zoom feature as well which maintains the 4k resolution (similar to hybrid zoom) at the cost of oversampling giving the lens an effective zoom range of 35-73mm. Noise is nonexistent unless zoomed. Been very impressed with this camera and lens combo so far. I plan on doing more tests maybe comparing apertures 1.4 vs 1.8 vs 2.8 etc.

It’s 2026 in Arizona and I just found out my church’s LED parking lot lights stay on 24/7. Each of them clearly have photocells yet they are doing what old street lamps did 50 years ago. What is this nonsense?