Can I put a Nikon Ai or Ai-S lense with my D5300 ?

I know that it will not do any metering, auto focus anythign like that. But for pure manual use, Can I mount an Ai lense to my DX body?

ISO camera question? And Sensor sizes?

It measures the sensitivity of the image sensor (sensitivity to light)

I set my nikon camera to D5300 ISO 800 shutter speed 1/45 and f2.8

my friend set his Olympus OM-D E-M1 to same settings but his image came out much better less noise & dynaic range was much better too. (lens Olympus 25mm & Olympus 45mm primes)

Also i used the sigma 17-50 f2.8 lens and was keep getting bit of flares from street lamps as we were shotting street lamps and walls.

his images were much better no flares no matter what… Olympus is micro four third but it is much more expensive camera set up than my nikon & sigma kit. Is this why his images were coming out with less noise and almost no flares & better dynaic rnage ( seems like his images recovered shadow details much better too)

I thought bigger senser better noise? What about dynamic range does the sensor size matter?

Street Lamp Photography exposure? Higher ISO & Lower Shutter Speed or Lower ISO & Higher Shutter Speed?

I'm struggling to get the correct amount of exposure. Street Lamp lit area has enough light. But in shadow ares i'm having a hard time recovering detail. I do not want to go really high in ISO as I have a crop sensor. Lens is wide open at f2.8. When I try to get more detail with a higher shutter speed 1/10 I get too much flaring around the lamp? What is the best way to go about it?

ISO 800 , 1/30 and f8 woudl that be a better way to get aroudn it? My nikon d5300 shows too much noise after 800 ISO

Street Lamp Photography exposure? Higher ISO & Lower Shutter Speed or Lower ISO & Higher Shutter Speed? - 1

I'm struggling to get the correct amount of exposure. Street Lamp lit area has enough light. But in shadow ares i'm having a hard time recovering detail. I do not want to go really high in ISO as I have a crop sensor. Lens is wide open at f2.8. When I try to get more detail with a higher shutter speed 1/10 I get too much flaring around the lamp? What is the best way to go about it?

ISO 800 , 1/30 and f8 woudl that be a better way to get aroudn it? My nikon d5300 shows too much noise after 800 ISO

What are Buy Nikon camera Online?

What are Buy Nikon camera Online?

What are the nikon equivalents of Canon FD lenses?

Just want to get some Prime lenses that are classic looking as collectible

I'm Looking to get some old classic lenses for Nikon APSc camera? What models are out there?

I just want to try out manual focusing, with F1.8 or f2.8 lenses (prime). I been looking out what classic lenses are out there. There are so many canon ones (Canon FD) but can't find much Nikons…
What are the nikon equivalents of Canon FDs
or any other Nikon ranges I can try

What Can I Do About Speck Of Dust Inside Wide Angle Nikon Lens?

Looks like there's a very tiny poiece of dust in the very center of this lens, which you can see in the picture. I have contacted Nikon and they said they don't clean lenses this old. However this lens in mint shape sells for $2000 on ebay, or at least has twice recently, so I really want to get rid of that dust if I can. Any suggestions? Thanks in advance!

Added (1). Though there are 3 little white spots in the center of lens which look like they could be specks of dust, it is only the one at the bottom of the 3 which is, the others are just reflections of light

What is the best camera for astrophotography for a price of about 800 that can see Saturn and Jupiter fairly clearly on a clear enough night?

I'm looking for a quality better than the Nikon p900.

Which point and shoot camera is most recommended?

1. Olympus trip S
2. Canon prima 4
3. Fuji DL 400 tele super
4. Olympus accura zoom 105
5. Nikon af600