Here's what enough UV light means...

[Andrea B.]

Around noon today here in northern Nuevo Mexico at 6900 ft (2300 m), I was able to focus -- easily -- on some tiny flowers via Live View using the BaaderU on the UV-Nikkor 105/4.5 at aperture f/16 and ISO-100 (base ISO) with no boost for the D610 LCD screen and no extra UV light on the flowers.

 

That's a lotta UV light, for sure !!! Live view focusing is usually not possible with the D610 + UV-Nikor + UV-pass filter unless a UV-LED is used on the subject while focusing and the aperture is set wide open to f/4.5.

 

Exposure: f/11 for 1/8" @ ISO-100.

This is SOOC, resized only.

The flower is a Speedwell (Veronica) ground cover.

The brighter flowers in the center are Vis white while the surrounding flowers are Vis blue. The white ones are slightly more UV-bright, so that is not a hot spot you are seeing there in the center.

 

 

Here's one rendition of the UV photo. The foliage is quite UV-dark. For fun, I pushed the foliage saturation way up.

[Andy Perrin]

Dang, Andrea, that's A LOT of UV! Keep covered up and use the sunscreen please please! The flowers are pretty!

[Stefano]

f/11, 1/8 s and ISO 100 is scary. That's really a lot. I definitely wouldn't spend much time there without protection.

 

These had the same ISO and aperture, but 32 times more exposure (4 seconds). The Soligor should be comparable to the UV-Nikkor in terms of exposure, then my camera is not as sensitive, my filter is not as transparent, but still there's a huge difference.

[Andrea B.]

Dang, Andrea, that's A LOT of UV! Keep covered up and use the sunscreen please please!

 

I was really quite surprised to be UV-focusing in Live View at f/16 with a Nikon conversion.

 

Speaking of "covered up" -- it was so so SO bright out there that I could not see the LCD at all unless I covered my head and the camera with a thick towel. So I was certainly covered up while shooting.

[nfoto]

I was shooting UV hand-held with the Z6 and the UV-Nikkor at f/4.5, 1/20 sec. at ISO 1100 this morning. Under heavily overcast skies to boot. No problem whatsoever focusing. So UV finally is here, even though the spring still hasn't entered in any convincing way.

[Andrea B.]

ISO-1100 ??

[OlDoinyo]

Now go up the road to Santa Fe Ski Basin and try the environs there. The base is around 10,000' (3,048m.) There will be even more UV up there.

 

I wish I had live view...the old A900 is an SLR, so not possible.

[nfoto]

ISO-1100 ??

 

Auto ISO makes 1/3 EV steps.

[Bill De Jager]

Andrea, I'll be at a comparable elevations under comparable clear and low-humidity skies in another [redacted] weeks, fires willing*. I haven't determined my exact gear but I think I'll bring my D610 and a good UV lens among other things. Unfortunately extreme drought over the last 24 months will mean relatively few flowers and pollinators.

 

*We're expecting an extremely bad summer for fires, which means there is likely to be a brownish-orange tinge to the lighting over parts of the western U.S. for much of the next 5 months or more. I doubt this will be good for UV photography. I'm hoping to slip in for some shooting between the time I reach full immunity (31 May) and the start of smoke season.

[Andrea B.]

Quite upsetting, Bill, that it has come to this.

 

Still, there are some flowers out there. And some interesting and lovely non-floral subjects to photograph.

 

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Auto ISO makes 1/3 EV steps.

 

On my Nikons I can't get an 1100 in 1/3 EV steps. Was this perhaps a 1/6 EV step??

 

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Now go up the road to Santa Fe Ski Basin and try the environs there.

 

I'm looking forward to exactly that sometime soon!

[nfoto]

No. Think about the f-number scale. f/11, f/8, f/5.6, f/4, ... Thus 1100 ISO (rounded actually 1120, however f/11 *is* f/11.2) is twice ISO 560 etc. "Twice" meaning of course 2EV.