推荐回答(5个)
区别如下:
1、定位不同:D810是专业全画幅,750是中端全画幅。
2、像素不同:D810像素高是3600万像素,而D750则是2400万像素。

3、动画即时取景中拍摄的DX格式照片不同:D810格式是4800×2704(大)3600×2024(中)2400×1352(小),D750格式是3936×2624,2944×1968,1968×1312。
参考资料:百度百科-尼康D750
参考资料:百度百科-尼康D810
本质区别是用途根本不同,其实没啥可比性,佩服网上的所谓大神硬比较这两台机器,举个例子,你说当年的D3S和D3X谁好?怎么比?
先说硬件区别,wifi可以后期另购硬件弥补这里不算(D810可以另购wifi模块)
D810有的D750没有的
1 更高的像素,后期有更大的裁切余地
2 更专业的操控,它的拨盘、肩屏、取景器、操作键位等等没有缩水,是专业级的,机身骨架也是全金属的。
3 光线好的时候有更好的画质,因为无低通,像素大,所以画质锐度更高,细节更饱满。
4 更大的对焦覆盖面积。
D750有的,D810没有的
1 更好的高感,ISO高的时候D750噪点更少。
2 在光线阴暗的时候对焦更快。-EV3敏感
3 更快的连拍速度
4 反转屏
这就是二者定位不同。因为现在单反被微单冲击,除了D4s这种纯专业机,其他的消费机很难再走功能单一的路线了,所以新机都是一专多能!
D810的定位就是全能的基础上偏重商拍,你可以理解为D3X的缩水升级版,要的是大像素,稳定、高画质,和D3X一样适合上架子和棚拍,比如合影、商品、大型写真、风光。
D750的定位就是全能的基础上侧重走拍,你可以理解为其实D750就是D4S的备用机,像素适中,重量轻、高感好、光线垃圾的时候反应也很迅速,翻转屏在偷拍、微距等等时候非常实用,适合新闻、人文小品、运动等等需要快速灵活拍摄的场景。
当年亚冬会的时候我(本人报社图编)接触的日本摄影同行的备用机是D200,因为当时全画幅的成本太高,备机也用全画幅不现实,而现在就不一样了,全画幅价格暴跌,很多摄影同行都偷偷把备机换成了D750,这也是尼康的野心之一,未来民用市场单反如果不降价会越来越难作,很难顶住微单,但是降价的话利润会下滑,所以转移目标,争取在新闻摄影这种专业领域占据更多份额才是重中之重,D750就是干这个的,可以给专业记者当备机,也适合业余记者和新闻摄影爱好者……尼康很狡猾……
所以D810和D750它们两个的用途其实根本不同,就像D3S和D3X,根本是两门。
另:要是家用,同等预算下找个靠谱的商家来台D610剩下的钱来只24-120f4+50.4D,比买个D810或者D750挂个50.8和24-85之类的强百倍!
如果就说功能上的区,参数上的:
1、810相像要比750要高。
2、相机快门速度,750只有1/4000秒,而810具备1/8000秒的快门。
3、15个十字对焦点,USB3.0等等,还有其它功能都比750好。
4、不过750有WIFI,有翻转屏,看你个人需要(当然D810B也比D750贵几千元)
D750和D810的本质区别在于,D810比D750高级两代,顺序是D750--D800/D800E--D810。在参数上,D810完全比D750好,特别是像素方面,D810的像素(3635万)要比D750(2432万)更高
750不具备1/8000秒的快门,只能定位在中低端。
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