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What the heck is this?
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Nov 12, 2023 10:43:04   #
burkphoto Loc: High Point, NC
 
JD750 wrote:
JPEG taken with a Nikon Z7. These were sunlit leaves but what is that? It is completely blown out. I cannot believe that is real. It looks like a digital artifact to me. What am I missing?

Thoughts, ideas?


That's what the late Dean Collins (80's commercial photographer, photo educator) would call a "specular highlight," or a mirror-like reflection of a light source off of a shiny object (chrome, water, wet or glossy leaves, blonde hair in portraits...)

Specularity is the quality of a reflective surface that yields this burnout. Once 'chrome film or digital files reach the limit of how many photons can be converted to tone, there is no more tone.

A polarizer on the lens, combined with a polarized light source such as direct sun, may reduce some of that reflectivity.

If you had captured the scene in raw form, perhaps you would have digitized more data, which would be recoverable in post-processing software such as Adobe Camera Raw in Lightroom, Lightroom Classic, Bridge, or Photoshop. However, if the scene dynamic range is great enough, "correct" exposure still wouldn't be contained in the raw file.

Our eyes see a much wider dynamic range than digital camera JPEG processors can stuff into a file. 12, 14, or 16-bit raw files can contain a lot more data than 8-bit JPEGs, which is why I use raw capture outdoors in bright sun. I know I'm going to "pull up" shadows and "pull down" highlights later, to lower the contrast range of the scene to what an 8-bit monitor or photo paper can display.

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Nov 12, 2023 10:47:12   #
burkphoto Loc: High Point, NC
 
agillot wrote:
The back of leave is white ????


No, but the light deflected off of it at a steep angle is very bright, and "burns out" the image by over-saturating the sensor elements with more photons than they can convert to an electron voltage.

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Nov 12, 2023 10:49:35   #
JD750 Loc: SoCal
 
burkphoto wrote:
That's what the late Dean Collins (80's commercial photographer, photo educator) would call a "specular highlight," or a mirror-like reflection of a light source off of a shiny object (chrome, water, wet or glossy leaves, blonde hair in portraits...)

Specularity is the quality of a reflective surface that yields this burnout. Once 'chrome film or digital files reach the limit of how many photons can be converted to tone, there is no more tone.

A polarizer on the lens, combined with a polarized light source such as direct sun, may reduce some of that reflectivity.

If you had captured the scene in raw form, perhaps you would have digitized more data, which would be recoverable in post-processing software such as Adobe Camera Raw in Lightroom, Lightroom Classic, Bridge, or Photoshop. However, if the scene dynamic range is great enough, "correct" exposure still wouldn't be contained in the raw file.

Our eyes see a much wider dynamic range than digital camera JPEG processors can stuff into a file. 12, 14, or 16-bit raw files can contain a lot more data than 8-bit JPEGs, which is why I use raw capture outdoors in bright sun. I know I'm going to "pull up" shadows and "pull down" highlights later, to lower the contrast range of the scene to what an 8-bit monitor or photo paper can display.
That's what the late Dean Collins (80's commercial... (show quote)

Good thought about the polarized adaptor it could have reduced the reflection.

I shoot raw when it makes sense and it probably did make sense here but I wasn’t thinking about that at the time. (Too much Tequila the night before.)

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Nov 12, 2023 10:57:20   #
JD750 Loc: SoCal
 
I have learned from this. I take quite a few photographs. I have never seen a leaf reflection so bright that it just blew out the pixels.

I thought it was a problem with my camera. I’m a bit disappointed that the problem was the 6” behind the camera, because I really want to buy a Z8. Lol.

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Nov 12, 2023 11:05:25   #
CHG_CANON Loc: the Windy City
 
JD750 wrote:
Good thought about the polarized adaptor it could have reduced the reflection.

I shoot raw when it makes sense and it probably did make sense here but I wasn’t thinking about that at the time. (Too much Tequila the night before.)


The only time to shoot RAW is always.

I believe one edit / reply in this thread showed the (entire?) recovery of the highlights. Given the veins visible in the JPEG, there was probably plenty of detail to recover / nearly recover, if desired, from the RAW version, even the JPEG version. But, why would that be desired, other than maybe lowering -- not removing -- some of that bright reflection? That reflection was part of the view, and the SOOC crowd would fall off their chairs if removed from 'what the camera saw'.

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Nov 12, 2023 11:17:09   #
TonyBot
 
CHG_CANON wrote:
100% Photo Gallery Post.
99.9% 100% sun highlighted, underside of leaf.


Yup. What he said,

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Nov 12, 2023 12:57:16   #
burkphoto Loc: High Point, NC
 
JD750 wrote:
Good thought about the polarized adaptor it could have reduced the reflection.

I shoot raw when it makes sense and it probably did make sense here but I wasn’t thinking about that at the time. (Too much Tequila the night before.)


Yeahhh, been there, done that... Tequila and I don't agree.

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Nov 12, 2023 12:59:53   #
Linda From Maine Loc: Yakima, Washington
 
burkphoto wrote:
... more photons than they can convert to an electron voltage.
Exactly what I would have said 🤪 🤪

.

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Nov 12, 2023 13:41:28   #
JD750 Loc: SoCal
 
Linda From Maine wrote:
Exactly what I would have said 🤪 🤪.
I thought for a minute my Z7 was malfunctioning but it was just my bad eyes. Rats. If it was malfunctioning I could use that as a reason to by my Z8 now instead of waiting as I have planned. But now I have to wait a bit more.

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Nov 12, 2023 13:56:49   #
Linda From Maine Loc: Yakima, Washington
 
JD750 wrote:
I thought for a minute my Z7 was malfunctioning but it was just my bad eyes. Rats. If it was malfunctioning I could use that as a reason to by my Z8 now instead of waiting as I have planned. But now I have to wait a bit more.
I read the whole thread before replying, so I saw your flimsy attempt at an excuse for G.A.S.


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Nov 12, 2023 14:12:09   #
relbugman Loc: MD/FL/CA/SC
 
Agree with the ‘highlight hypothesis’; BUT, what’s the tiny dangle behind and to the right? It’s at the bottom of the dark thin vertical triangle next to the highlight on the leaf behind, ENE in the red circle, very tiny.

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Nov 12, 2023 14:15:31   #
larryepage Loc: North Texas area
 
Linda From Maine wrote:
I read the whole thread before replying, so I saw your flimsy attempt at an excuse for G.A.S.



I thought it was a fairly worthy effort. The mistake was that he probably should have spent more energy to convince himself and less working to convince us. Probably could have a new camera on order.

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Nov 12, 2023 14:25:28   #
Linda From Maine Loc: Yakima, Washington
 
larryepage wrote:
I thought it was a fairly worthy effort. The mistake was that he probably should have spent more energy to convince himself and less working to convince us. Probably could have a new camera on order.
Sounds like you have experience in this area

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Nov 12, 2023 14:28:41   #
larryepage Loc: North Texas area
 
Linda From Maine wrote:
Sounds like you have experience in this area


The problem is that he and I are both engineers. We will eventually fall in the face of logic most of the time.

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Nov 12, 2023 15:20:27   #
JD750 Loc: SoCal
 
larryepage wrote:
The problem is that he and I are both engineers. We will eventually fall in the face of logic most of the time.
Yep I resemble that remark. I thought it was a decent effort too, and you are right about convincing myself. ;)

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