The Villages Loc: The Villages, Florida

CO - Would the MP numbers you reference change mush IF dealing with a Full Frame vs. Crop? I would think they increase to some extent due to increased sensor size.

mizzee Loc: Boston,Ma

Youll also have a better lends selection.

tdozier3 Loc: Northern Illinois

How is that ? You can use any f mount lens on a any DX format Nikon

amfoto1 Loc: San Jose, Calif. USA

D3000-series and D5000-series Nikons do not have the in-camera focusing motor, so are unable to autofocus Nikkor "AF" and some other lenses that don't have a focusing motor built into the lens.

While you can mount and use them, they will be manual focus only. If you want AF with these cameras, you basically need to buy AF-S or AF-P lenses. That's a little bit limiting, but over the past 5 or 10 years Nikon has gradually been converting to AF-S... and more recently some AF-P (which are not fully backward compatible with D7000 and other earlier cameras).

D7000-series and higher Nikons DO have the in-camera motor, so are able to autofocus both types of lens... those without and those lenses with the built-in focusing motor.

There also may be some metering concerns with certain lenses. Consult the lens/camera compatibility charts at the Nikon and Nikonians.org websites. Ken Rockwell also has a pretty good description of the different Nikkor designations and what they mean.

There are a number of online resources that can help you compare the various camera models....
https://cameradecision.com/compare/Nikon-D7500-vs-Nikon-D7200
https://www.techradar.com/news/nikon-d7500-vs-d7200-8-key-differences-you-need-to-know
https://www.dpreview.com/articles/3436918000/nikon-d7500-vs-d7200
https://www.imaging-resource.com/cameras/nikon/d7200/vs/nikon/d7500/
https://www.bhphotovideo.com/c/compare/Nikon_D7200_vs_Nikon_D7500_vs_Nikon_D500_vs_Nikon_D3200/BHitems/1127271-REG_1333060-REG_1214161-REG_1027229-REG

tdozier3 Loc: Northern Illinois

Thanks, but these are all things I am well aware of. The question was if there would be a noticeable difference in image quality with the difference in MP's.

Pegasus Loc: Texas Gulf Coast

I went from 24mp D5200 to 21mp D7500 and I consider the IQ of the D7500 to be superior. I print some images in 8x10 and 13x19 they are great.

CO

They change a lot. I just looked up the pixel sizes on Imaging Resource. The pixel pitch of the 24 megapixel D7200 is 3.92 microns. The pixel pitch of the 24 megapixel D750 is 5.95 microns.

hookedupin2005 Loc: Northwestern New Mexico

🏃‍♂️🏃‍♂️🏃‍♂️ hehehehehe!

pmackd Loc: Alameda CA

I shoot the D500 too with great results but I have an issue with your math. The overall sensor sizes of Nikon's 24 MP and 21 Mp DX sensors are very similar. To the extent they are the same that would mean the areas of the individual pixels would be inversely related to the Mp. (since total area = constant = Mp x individual pixel area. ) So the individual pixel areas on the 21 Mp sensors would be 24/21 = 1.143 times larger than those in the 24 Mp sensors. That's about 14 % larger in area. Some folks seem to know the exact dimensions somewhat better than this estimate and quote 16% bigger rather than 14%.

https://cameradecision.com/compare/Nikon-D500-vs-Nikon-D7200

In either case hardly "almost twice." But enough for a small advantage in low light performance.

CO

I made a mistake there. I was basing it on the pixels being round and used the formula for the area of a circle - PI times radius squared. I entered something incorrectly. I did that again. It looks like the surface area is about 16% larger.

jpgto Loc: North East Tennessee

Check out the d7200 refurb or used from a reputable seller

tdozier3 Loc: Northern Illinois

I don't see the point, it's got the same processor & mp's as my 3200

CO

The D3xxx and D5xxx series Nikons have a pentamirror viewfinder. If you go to a D7xxx series or above, you get a superior pentaprism viewfinder. The glass prism inside gives a larger, slightly brighter view through the viewfinder. It really makes a difference. You'll also get dual command wheels. Dual command wheels are great for variety of settings - manual mode, setting AF mode and focus points, setting bracketing. You get the U1 and U2 memory banks on the mode dial. You can save frequently used settings and recall them in a second.