More Mega Pixels is not always better

Many people have been asking me recently why I am still using an 8 year old Nikon D700, my reply to them is two fold.


Firstly. 

The camera is still producing the images i want it to and is not holding me back in any way. Coupled with the Nikkor 200-400 or the 200 Micro I am still getting images with loads of detail even at f22.


Secondly.

And this is to do with that f22 aperture, theres is a thing called diffraction which has a lot to do with the way light waves react when passing through a small opening, I will not go into the science side of it here though. A lot of my images are shot at apertures smaller than f18 with f22 being the most used, this is all to do with the narrow depth of field when shooting close in (we are talking about millimetres of in focus subject here). When the Nikon D800 first came out with its 36mp full frame sensor I wanted to try one out, fortunately a friend lent me one for a few weeks. I soon learnt that with my 200mm Micro lens on it at f22 I was having problems with the loss of detail in the images but if I opened the aperture up to f11 that detail started to reappear, here lies the problem at f11 on a full frame body with the 200mm Micro my depth of field is 2mm and at f22 it is 7mm and butterfly antenna can be at the best 5mm apart.

The problem I found, is that there are so many variable to this, but I do know through testing with higher mp bodies that my 200mm Micro would severly restrict the amount of depth of filed I could use due to the diffraction at very small apertures and I was not prepared to compromise the detail in my images.

So now you know why I still use an 8 year old camera body.

Silver-studded Blue 200mm Micro f22


                                                               Silver-studded Blue 200mm Micro f22


Brown Argus 200mm Micro f22


                                                               Brown Argus 200mm Micro f22

© Ian Hutchinson 2017     Get in touch