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Posts for: smf85
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Apr 8, 2023 14:49:01   #
dpullum wrote:
I have converted a Nikon 1 J1 to be an IR camera. I have remove the Hot mirror [IR Rejection Filter] and the Anti-aliasing filter [Moiré patern]. With a microscope slide the sensor is covered to protect the sensor.

I have rebult the camera twice because of dust. The first time because the myth of "only professionals ordained by god" can clean sensors... super sensitive to scratches. Getting the slide glass clean was a task but felt satisfied... Feelings and Reality are not the same; dust spots prevailed. The spots were distinct indication closeness to the RBG-Bayer-layer which inturn has a tough glass bonded directly to it. Obviously, the sensor had dust, as well as one on the microscope slide glass 3/8" above indicated by non-sharp spots. I changed lenses, so, not lens dust. The sensitive easily scratched never-touch-sensor surface is bunk.
https://www.youtube.com/watch?v=xLzrS3aSJWE

The second time I actually did the myth unpardonably and used a one-time use cleaning stick in a sensor cleaning kit by Kuuzuse designed to clean sensors and inspected using a sensor lighted inspection magnifyer. OR??? are mirrorless sensors covered... are they cleaning filters in front of the sensor? Looking at a Your Tube sensor cleaning demo... it sure looks like the actual sensor is being cleaned. At 4 minutes into the video, I see the sensor and the little wire/sensor-chip attachments around the sides. In viewing the video of sensor cleaning I surmise that the sensor itself is exposed.
https://www.youtube.com/watch?v=hPDeNHp8Mc8

It dawned on me that I do not need the microscope slide glass and to remove the plastic that it is mounted to. In so doing I can remove the lens and uses the cleaning probes directly on the sensor. I will make sure that the surrounding have been blown clean... I can reach the sensor hard shell and so if it is dust free then my IR conversion will be fully successful. I will clean and mount the 10-30mm lens. I can disassemble and assemble the Nikon 1, quickly... the sensor and slide glass cleaning were laborious and unsuccessful.. Frustrating

Two questions:
1. Should I bare the sensor unit to make de-dusting easy ... does my plan have holes in the logic?
2. I have a 10mm, a 10-30mm, and a 30-100mm lens, which should I use on the converted to full spectra Nikon 1 J1 camera?
I have converted a Nikon 1 J1 to be an IR camera. ... (show quote)


The actual sensor is extremely fragile, it’s also highly sensitive to dirt. The Bayer filter and micro lens array are made of plastic - more durable than the actual sensor surface but still fragile.

The cover glass is needed for proper focusing, particularly on Nikon cameras. Note that certain Canon camera’s can be used with a bare sensor. You can remove the Bayer filter and micro lens array without affecting the focus as the micro lens array compensates for the plastics refraction.
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Mar 15, 2023 19:52:24   #
pendennis wrote:
Remember that bank reserve requirements were reduced during the C***D19 p******c. It's not unreasonable for reserve requirements to be reduced during times of financial crises (real or perceived).

And just where were the Fed's bank auditors, reviewing the high-risk loans SVB was making?


They had no unusual high risk loans - they got caught by an asset liquidity problem not a loan performance problem.
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Mar 6, 2023 19:17:48   #
CaptCurt wrote:
I want to know if Nikon makes a adapter that will work with the NIKKOR Z 800mm f/6.3 VR S on a D850 or D6?


No it doesn’t. The flange and throat distances make a non-optical adapter impossible.
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Jan 26, 2023 13:29:55   #
lone ranger wrote:
I just ordered a Nikon Z9 from B and H photo. Does anyone have one out there and tell me your experiences with it. Thank you so much.


Absolutely great camera. Make sure you update the firmware.
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Jan 20, 2023 19:22:57   #
#2
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Jan 9, 2023 11:57:15   #
Sidwalkastronomy wrote:
Never heard that but would make sense. Maybe take them to photograph takeoff and lunar features. I bet the weight factor was the reason if cameras didn't come home. Remember they took moon rocks home so weight is always an issue


They left everything that wasn’t needed for the return flight. In addition to the camera’s they left the suit backpacks (expended) and the bottom half of the lander.
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Jan 8, 2023 21:54:08   #
Melsilver9 wrote:
Getting ready to make a big purchase
Leica M11 vs Hasselblad X2D
Does anyone have any experience comparing image quality? Are Hasselblad lenses as good as Leica
Thank u


Both are fine camera’s. The intended use case for each is different.

The Hasselblad X2D is a 100mp medium format sensor camera with lenses able to deliver on that resolution. It’s designed for a slow(er) deliberate shooting procedure. It’s got some interesting features such as integrated leaf shutters - allowing flash sync up to the top shutter speed 1/2000.

The Leica M11 is a 60mp full frame format sensor camera with lenses also able to deliver on that resolution. It’s definitely a smaller camera. It’s designed for a fast(er) shooting procedure. The M11 is a rangefinder digital camera. And that is a whole different way of doing things.

My point is that they are two specialized cameras. They are difficult to compare since they do things so differently.
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Jan 6, 2023 21:07:19   #
bikinkawboy wrote:
Everyone keeps saying that RAW is the image exactly as the sensor sees it and that jpeg is the image after being processed by the camera, or “doctored up.” I wanted to see the difference so I set my Nikon D80 to record images in both RAW and jpeg fine-large. I looked at the results on the Nikon NX2 program and a 24” screen and couldn’t see any difference between the two whatsoever other than the file size. I opened up the metadata display and everything is exactly the same on both other than the file size and the 8 bit vs 12 bit color. If I set the camera to vivid, both images had increased vividness. Same with hue, sharpening, ISO and white balance. Everything is exactly the same whether I used auto mode, programmed auto or any of the other programmed modes.

So exactly where is this processing that the camera is supposed to be doing when recording the jpeg? The metadata and visual display don’t show it doing anything other than creating a larger file and color bit size difference.
Everyone keeps saying that RAW is the image exactl... (show quote)


What is called RAw as close to what the sensor sees as practical/possible but it really isn’t that close. The sensor data needs to extensively processed before it’s written to the card.

Even so, the data output still needs significant processing to be viewable. In the case of the supplied Nikon software it processes the data according to the in camera settings as to white balance, color profile, intention, etc. So the initial result will be identical to the camera created JPG.

The import part to this is that you have much more data to work with when you process the NEF file vs the JPG. This allows more manipulation of the image. The ‘raw’ file produced by the camera is the mfr’s attempt to get you all the sensor image data with none of the noise and artifacts produced at the time of capture. Ultimately if it’s going to be made a jpeg the image will be created through the photographer’s art not an algorithm.
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Jan 1, 2023 15:59:19   #
RiJoRi wrote:
I was on another site, and saw a comment about IR photos and phones.

I opened the Camera app on my Samsung Galaxy J2, and pointed the TV controller at the lens. Pressing the power button, I saw flickering from the front of the controller. Got the same effect with other photo apps, so it looks like the phone can pick up IR. Now what the app itself does with the info is something else.

A blessed and happy New Year, every one! 🔔
(Remember, DON'T drink and drive – your insurance deductibles reset at midnight! 😲)

--Rich
I was on another site, and saw a comment about IR ... (show quote)


All sensors can pick up IR - normally there is a IR filter in place to prevent it. As Depends on the phone and the composition of the Bayer array filter. Front camera’s are less likely to have the filter too.
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Jan 1, 2023 15:48:16   #
WNYShooter wrote:
Seriously??? …..

Also, in regard to Trump's leverage or wealth, WTF do you care, other than due to envy and jealousy that is????


Only to the extent that as a person who might want me to v**e for him I want to know how accurate are statements he’s made about himself. Beyond that there’s nothing for me to envy or be jealous of.
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Jan 1, 2023 10:52:54   #
WNYShooter wrote:
These are income tax returns. Income tax is paid on taxable events, not on increases in equity. For instance, hypothetically, let's say you purchase an income property for $1, and it generates $1000 in income a year. Now let's say that the maintenance, administration, and tax costs on that property adds up to $1000/Y. Let's also assume that that income and cost stays the same for 10 years, but that the property is now worth $1,000,001, essentially increasing your equity (wealth on paper) by $1M.

Thing is, even though you're now $1M wealthier, you haven't needed to pay a dime of income tax on that gain in wealth. Now the beautiful part about this is that you can take a secured loan out against that equity and repeat that whole cycle again and again, thus multiplying your gain in wealth many times over, and even write off the added interest costs against any income from each of those properties. Theoretically speaking, let say 20 years later, all of these income properties you purchased are now worth $100,000,001, as long as you were able to offset any income generated from them with ownership costs, you wouldn't have paid a single penny in income tax on that $999,999,999 increase in wealth. Why? Because income tax isn't due until a taxable event, which would be the sale of the property.

This is of course a very simplified example, but essentially, it is the method most successful real estate investors use to get extremely wealthy. Keep in mind, the vast majority of Trump's wealth comes from real estate.
These are income tax returns. Income tax is paid o... (show quote)


Yes but income from property is a taxable event and costs that offset the income entirely might not be actually deductible (IRS from experience can be picky about this, particularly when the net is no taxable income).

Another question is how highly his real estate is leveraged. If it’s very high as suggested by other documents he’s not that wealthy at all. As the massive equity in the properties isn’t actually his.
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Jan 1, 2023 09:09:35   #
outdoorcat wrote:
Sure, smartphones out sell cameras. It now is almost a necessity. Cameras on smartphones are primarily used for snapshots.
Smartphones do possess abilities to create artistic shots, but truly are short on what a dedicated camera can produce.
I can't imagine replacing my camera with a smartphone, although I do use it occasionally for snaps when my camera is not handy.

There are things that I just can't do with my smartphone that I can do with my camera.


I think we might see iCamera’s in the future - similar to a cell service connected tablet (iPad) only a camera. You would use it like a phone/tablet to take pictures or you could use a mfr. app to use it like a dedicated camera.

Or perhaps a fully integrated camera run off the phone and Bluetooth connected.

Lens costs wouldn’t change but a camera body without buttons would be significantly cheaper to produce. So much so that the phone body probably wouldn’t be more expensive than a non-phone body. Meaning you could see options in the future that were available as dedicated cameras or as camera phones.
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Dec 31, 2022 23:14:17   #
LFingar wrote:
True, but technology has this rather annoying habit of constantly changing and improving. I have a 2Tb back-up drive that gets lost in my shirt pocket. Not long ago people would have laughed if you said that was possible. Photo technology is going to change. Cameras are going to change. Count on it. Maybe the cellphone camera, or something similar is the future. Maybe not. Whatever is coming next is going to be different then what we have now, and better besides. You can count on that also.


Now that I think of it a camera-cell device is certainly possible. Meaning a device with a standard sized lens and sensor coupled to a cell phone back. Takes pictures with the dedicated camera section then drops the image to a cell phone part. Maybe from the from the front it might look like a Nikon Z30 and from the back an Android or Apple phone.
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Dec 31, 2022 21:59:19   #
Which is a complete and absolute mess.
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Dec 31, 2022 21:58:22   #
bbq4270 wrote:
I have been using Photoshop CS5 since 2009 with Windows 10 and am now considering upgrading to Adobe Photoshop Cloud. I have been spoiled having access to Photoshop loaded on my computer all these years, and am not happy relying on a monthly subscription for software I need that is floating around in the cloud somewhere. I can only imagine difficulties, i.e. limited access, interruptions, etc. So, before I make the leap for CAD $27.99/mo, I would appreciate any constructive feedback (good/bad) from current users of Photoshop Cloud before I make a decision.
I have been using Photoshop CS5 since 2009 with Wi... (show quote)


As mentioned by others - the software is still all on your computer with the MAC/PC subscription options. The only difference is periodically the software will want to check Adobe servers to insure your license is current and to offer you software updates and patches.
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