My Nikon D200 doesn't read the memory card!

My Nikon D200 doesn't take photos, its not reading the Memory card, in the LSD top has "[CHA]" where is suppose to be the photo counter, and it keeps lighting, i don't know what does it means, someone knows whats that "CHA" in there?

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Can I disable Nikon's image protect feature?

I've changed my auto focus settings to use the ae-L/af-L button on the back of the body for focus lock instead of the shutter button. I'm loving it, except for one issue.

I'm checking photos as I go and switching back to shooting pretty quickly. I keep wondering why my auto focus won't work, while inadvertently locking my images and missing important shots.

Is there a way to turn the image lock feature off so if I use the ae-L/af-L button in display mode it will just go back to shooting mode and focus the lens?

Nikon D5200

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Is Canon 7d mark 2 a better choice than nikon d7200 for portrait photography?

so i bought a nikon d7200 few months ago and im not satisfied with its performance with my portraits and sports photography so im planning to sell it after few days and i wanted to know if 7d mark 2 is a better camera for portraits cause im planning to buy one soon!
btw i used nikon d7200 with a tamrons 24-70 mm 2.8g lens and the pic quality was worse than a nikon or canons standard DSLR'S!

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What camera best suits my requirements?

I'm looking for a quality camera to invest in and I can't seem to find what I'm looking for, but maybe those of you who are more experienced can help me out.
Things I'm Looking For In A Camera:
-The screen must come out and twist so you can see what your filming from the lens side of the camera
-Digital SLR
-Preferably Canon or Nikon, but not necessary
-Automatic focusing (with manual is great too, but not just manual)
-Great for taking up close pictures of things like bugs and flowers, but also for pictures of landscapes and night skies
-VIDEO FILMING so I can film our teams games in good quality
-Under $700
-Durable, I want it to last me at least the next 4-5 years.

Thanks to everyone who helps me out!

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Can I use ordinary NI-MH batteries in place for Nikon's EN-MH2 batteries?

Hi, I seem to be having some trouble finding out if the voltage from Nikon EN-MH2 batteries are the same as some of the ordinary 1.2V NI-MH batteries found in specialist electronics shops. It is a Nikon L820 that is currently using 4X 1.5V lithium batteries.
Added (1). It's currently using 4X 1.5V AA Lithium batteries.
Added (2). It's currently using 4X 1.5V AA Lithium batteries.

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Is there a such thing as a DX to FX nikon converter?

I have 2 separate cameras and bought a DX lens for a great deal but I wish I could use it on my d750 without losing the quality.

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For a Nikon DSLR what is the difference between adjusting EV and ISO? How does either effect the exposure?

For a Nikon DSLR what is the difference between adjusting EV and ISO? How does either effect the exposure?

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Which is the minimum aperture on my Nikon DX AFs 55-200mm 1:4.5 6g ED lens

When I look physically at the size of the aperture it look a lot smaller than 4.5 and when I put the camera on auto with & very bright light it goes down to f 11 and when I put the camera on A it goes down to f22? So finally what is the minimum aperture?
My camera is Nikon D50

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Is the Nikon D5300 still worth it being 7 years old compared to newer camera models in the same price range?

Is the Nikon D5300 still worth it being 7 years old compared to newer camera models in the same price range? - 1

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I bought a Olympus 50mm f/1.8 F.Zuiko prime lens and I can't find an adapter that connects to my Nikon f mount camera?

I bought a Olympus 50mm f/1.8 F.Zuiko prime lens and I can't find an adapter that connects to my Nikon f mount camera?

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