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Mar 24, 2024 09:48:45   #
Something's not right -- this thread is being edited!

I wanted to reply to imagextrordinair by quoting an earlier response back near the start of the thread but couldn't find it. It was from selmslie. I was however able to find a post from User ID that quoted the post by selmslie. https://www.uglyhedgehog.com/t-802457-4.html#14517933

Here's the content (from quote) of the post that was removed.

selmslie wrote:
Of course it's nonsense.

You only need to look at the camera Flange focal distance table to see why.

Any flange distance close to the lens focal length is likely to need some form of retrofocus design. For example, any Nikon FX lens shorter than 50mm (flange distance=46.5) will need some degree of retrofocus design.

That becomes more challenging (and expensive) the shorter the focal length. That's one of the reasons the Nikon Z flange distance is 18mm.

It also explains why there are so many inexpensive wide-angle lenses showing up the Sony E mount (18mm flange distance) and Nikon Z mount.
Of course it's nonsense. br br You only need to l... (show quote)


What's going on? Why would selmslie's post have been removed and who removed it?
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Mar 22, 2024 16:49:53   #
For sports action, wildlife and BIFs you can't beat Swiss quality in mirrorless digital cameras.

But remember it's not the tools that matter it's the skilled photographer who can work around and overcome any limitations.


(Download)
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Mar 21, 2024 19:28:00   #
Rongnongno wrote:
Right, so, just as useless.

Focus peaking in a modern high resolution EVF is in no way useless.
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Mar 21, 2024 18:39:54   #
Rongnongno wrote:
I use manual most of the time and yes, a D850 as well as a D500 have focus peeking.

Not in the optical viewfinder, right? You have to lockup the mirror, put the camera in live-view and use the LCD that you can't see.
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Mar 8, 2024 14:04:50   #
dannac wrote:
After activation ... can the computer be offline ?


Yes.
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Mar 6, 2024 08:19:22   #
Mainridge wrote:
As a wildlife shooter, one is always instructed to fill the frame. When the distance is such that the frame cannot be filled using a full-frame camera, is there a hard and fast rule as to the best alternative method to fill the frame? In other words, should I switch over to Aps-c, add a teleconverter or crop in post. I am usually shooting with a 45 mp camera if that helps.

Spend lots more money on a longer lens.
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Mar 4, 2024 11:48:12   #
TriX wrote:
Apple ProRAW and Adobe DNG are different formats.

An Apple Pro raw file is an Adobe compatible Linear DNG.
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Mar 4, 2024 11:47:14   #
TriX wrote:
Apple ProRAW and Adobe DNG are different formats.

From the Wikipedia article you referenced: "DNG is both a raw image format and a format that supports "non-raw", or partly processed, images.[2] The latter (non-raw) format is known as 'Linear DNG'."

A Linear DNG contains no raw data.


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Mar 4, 2024 11:37:10   #
a6k wrote:
I used MacOSX Preview app to view EXIF. It says 16.


Here's some more info: https://dprevived.com/t/full-field-mtf-of-the-48mp-camera-of-iphone-14-pro/2043/

"In the Pi V3, the four pixels of the same color in each Quad are not binned directly in some modes: they are read at different times, like in exposure bracketing. Stacking is performed on-sensor, producing a single HDR pixel out of the four. This is the way that a Pi engineer put it for the V3.

The V3 gains about 2 bits of dynamic range this way, so if we generously assume that the Pro 14's sensor produces 12 real bits out of the ADC, we could get 14 bits at 12MP out of the sensor after tone mapping. Normalizing this to 16 bits provides additional precision in order to perform the other operations discussed earlier to produce the RGB DNG file (wb, demosaicing etc.).
"

I bolded two critical sections of the above quote from the article. Pro raw is a linear DNG that contains no raw data. The ADC in the camera is 12 bit.
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Mar 4, 2024 11:00:31   #
a6k wrote:
I used MacOSX Preview app to view EXIF. It says 16.

It's a 16 bit lossy compressed RGB image in a DNG wrapper. There's nothing raw about it.

https://kirkville.com/apples-new-proraw-photo-format-is-neither-pro-nor-raw/
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Mar 4, 2024 09:57:52   #
a6k wrote:
I won't debate the assertion that the file is not a raw file. But RawDigger will not, it says, open a non-raw file. For example, it won't open a JPG or a TIF/TIFF.

More importantly, how then to explain the maximum value?

RawDigger will open a DNG including a linear DNG which does not contain raw data. Apple Pro raw is not raw.

https://kirkville.com/apples-new-proraw-photo-format-is-neither-pro-nor-raw/
https://discussions.apple.com/thread/254714624?sortBy=best
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Mar 4, 2024 09:00:02   #
a6k wrote:
I looked at a DNG raw file from it with RawDigger and noticed it appears to be 16 bit. It has values up to 2^16. My Sony maxes out at 2^14.

What is actually going on here?

If the DNG you looked at was an Apple Pro raw file then it wasn't a raw file. Apple Pro raw isn't raw. It's a processed and demosaiced linear DNG.
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Mar 1, 2024 13:48:32   #
A. T. wrote:
Thanks for the information. I have some serious learning to take on but I won't be developing my own negatives. I have a few companies that develop and scan film that I will give a try but I do plan on scanning my negatives in the future.


Film development is how you make the Zone System work. You expand or contract the contrast in your negatives via the film development time to better match the lighting contrast in the scene. A Zone System photographer marks their film to be developed with N for normal development and then N+ or N++ and/or N- or N-- to indicate the required development manipulation to adjust the film's response curve. That's what makes the Zone System work.

It's easy to process roll film at home. You need a daylight tank and reels, some measuring beakers a dark place to load the tank, a sink, thermometer and the chemistry.
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Apr 14, 2021 12:34:43   #
Basil wrote:
I'm sure many of you who shoot Canon have heard that Canon recently announced development of a Canon R3 mirrorless. We don't seem to have a huge amount of info yet on the specs, but one thing we know is it will be using a stacked high-speed readout full-frame sensor - something Sony is already using. No word yet on resolution or much about other features. It will have a builtin battery grip like the Canon flagship 1DX cameras.

https://www.dpreview.com/videos/8753724351/dpreview-tv-chris-and-jordan-react-to-the-canon-eos-r3-announcement
I'm sure many of you who shoot Canon have heard th... (show quote)


Yep, in this business that's a given. And if you start thinking about the R3 guess what will happen.....
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Apr 12, 2021 22:04:30   #
xt2 wrote:
What to do, which to buy...I tried both and...your thoughts please.

I made the switch to C1 about 10 years ago. I prefer it's editing abilities. LR bogs down too quickly when you start using the adjustment brush.
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