Full Spectrum Flower Power

[Alex Vasile]

From left to right:

• UV (310-400nm): 6s @ ISO 3,200
• VIS: 1/60s @ ISO 1,250
• UV+VIS+IR: 1/60s @ ISO 640
• UV+IR: 1/15s @ ISO 3,200

No idea how much this lens absorbs in the UV range, have not measure that yet. Each of the four was a stack of 7-10 images to reduce the noise.

The last 3 images were white balanced to have the edges of each petal white, I left the UV image with the strong purple tint since it was much more pleasing.

 

[AlanLichty]

Interesting how much light this flower has in the UV bands. My two favorites are #1 with straight UV and #3 with UV+VIS+IR.

 

[Jameel Hyder]

Interesting comparison. #3 is my favorite of the bunch.

Are these screw in filters? When you say UV+VIS+IR for example, is it just one filter or a combo?

 

[Alex Vasile]

Interesting how much light this flower has in the UV bands. My two favorites are #1 with straight UV and #3 with UV+VIS+IR.

Yes, I'm looking forward to going out once everything blooms to grab photos of others to compare.

 

[Alex Vasile]

Interesting comparison. #3 is my favorite of the bunch.

Are these screw in filters? When you say UV+VIS+IR for example, is it just one filter or a combo?

I also really like #3, I find the peach tones really pleasing.

The camera is converted to full spectrum, I took the hot mirror out and didn't replace it with anything.

The full spectrum shots (UV+VIS+IR) are shots without any screw on filter. The VIS shot has a bad external hotmirror (bad in that it allows all the way down to ~310nm) screwed to the from of the lens. I have a "UV" bandpass filter that also allows a sizeable amount of IR through, so the UV+IR shot is with that filter. Then the UV filter shot is the UV bandpass and the hotmirror.

 

[JimFox]

I think #3 is my favorite as well.

It is really interesting to see each of these. I am contemplating getting a camera converted to Full Spectrum.

 

[Alex Vasile]

I think #3 is my favorite as well.

It is really interesting to see each of these. I am contemplating getting a camera converted to Full Spectrum.

I got lucky with my Nex. The filter was thin enough that taking the spacing shims out was enough to compensate for the change in optical distance so I didn’t need a replacement glass. Sensor dust is definitely much more noticeable.

 

[JimFox]

I got lucky with my Nex. The filter was thin enough that taking the spacing shims out was enough to compensate for the change in optical distance so I didn’t need a replacement glass. Sensor dust is definitely much more noticeable.

Sensor dust is an inevitable evil! Ugh... I hate it.

That's great the spacing turned out good for you.