Nikon D750 vs D810 vs D610: 10 key differences you need to know
Nikon D750 vs Nikon D810 vs Nikon D610: 06 Wi-Fi connectivity
Wi-Fi connectivity is becoming a basic function of many cameras, but it's taken a while for high-end DSLRs to catch up to the need for this function which now seems very ordinary.
The D750 is the first full-frame Nikon to include the functionality built-in to the body.
Having Wi-Fi means you can remotely control the camera from your smartphone or tablet, which is perfect for landscape and wildlife photographers as well as being useful for composing from difficult angles or locations, or for setting up group shots.
You can also transfer images taken on the camera to your smartphone or tablet for quick sharing on social networking sites or email.
This may sound like a gimmick for professional photographers, but it's a great promotional tool to share a quick shot from an ongoing photo shoot.
It is possible to add this functionality to the Nikon D810 and D610 but you'll have to purchase additional adapters, which will add to the cost of the purchase.
SEE MORE: Sony A7s vs A7R vs A7: which Sony full-frame camera should you buy?
Get daily insight, inspiration and deals in your inbox
Sign up for breaking news, reviews, opinion, top tech deals, and more.
Nikon D750 vs Nikon D810 vs Nikon D610: 07 memory cards
It may sound like a reasonably trivial point, but if you've already got stacks of memory cards piled up, having to invest in a completely different format can really add to the cost of your camera purchase.
All three of the cameras accept SD cards, but only the D810 is also compatible with CF cards.
File sizes from the D810 are huge, especially if you're shooting in raw format, so you're going to want to make sure you have enough memory to last a full day's shoot - a single old 4GB card simply isn't going to cut it.
SEE MORE: Fuji X-T1 vs Nikon Df: which is the best retro-style camera?
Nikon D750 vs Nikon D810 vs Nikon D610: 08 shutter speeds
If you're capturing fast moving action, or you like to shoot wide open in bright light, then you'll need something which is capable of extremely fast shutter speeds, and it is the Nikon D810 which is the clear winner here.
Both the D750 and the Nikon D610 can only reach speeds of 1/4000th second, while the D810 manages 1/8000th second.
All three of them can be set to shutter speeds of 30 seconds too, as well as Bulb mode.
SEE MORE: Nikon lenses from A-Z: the ultimate photographer's guide
Nikon D750 vs Nikon D810 vs Nikon D610: 09 processor
The Nikon D750 and the D810 both have Nikon's latest processor, the EXPEED 4, which helps with low light, high sensitivity shooting as well as the general operational speed.
As the budget model of the group, the Nikon D610 is equipped with the slightly older EXPEED 3 processor.
SEE MORE: Nikon accessories - a complete guide to your DSLR's ports, sockets and connectors
Nikon D750 vs Nikon D810 vs Nikon D610: 10 price
Ah, probably the biggest consideration for many.
As we might expect, the Nikon D810 with its slightly more advanced features is the most expensive of the trio, coming in here at £2399 (body only).
Don't forget you might also need to add the price of the Wi-Fi adapter, and additional memory cards to account for the huge file sizes if you don't already have a good supply.
The other two cameras are slightly closer in price, but with its advanced features including built-in Wi-Fi and the tilting, higher resolution screen and better processor, it would seem like the D750 perhaps offers better value for money, currently retailing at around £1799 (body only).
However if you're really on a tight budget, the D610 still offers a lot for the current £1285 (body only) retail price - and you could maybe even use the extra £500 to invest in additional lenses or accessories - again don't forget to factor in the cost of the Wi-Fi adapter if you think you might need it.
SEE MORE
Nikon D3300 vs D3200 vs D3100: which camera should you choose?
Nikon D5300 vs D5100 vs D5200: 13 key differences you need to know about
Nikon D3300 vs D5300: which DSLR should you choose?
Nikon D750 vs Nikon D810 vs Nikon D610: conclusions
Which of these cameras you decide to plump for will no doubt come down to variety of factors, with none of them representing a bad choice.
If you're a professional in this for the long haul, it's probably the D810 that will win you over - but for under £2,000, the new D750 offers a huge amount for your money and will also be incredibly enticing.
Enthusiasts looking to take their first step into full-frame could do a lot worse than the D610.
READ MORE
DX format vs FX format: what you need to know about Nikon's sensor sizes
Canon EOS cameras: 100 things you never knew they could do
Canon vs Nikon: shooting modes compared and explained
Canon EOS 70D vs Nikon D7100: 15 things you need to know