EOS 2000D how to zoom in

[sylvia83]

Hi Everyone im a dinosaur when it comes to technology but my husband decided to buy me this camera as ive just qualified as an iridologist , i would prefer to be able to take iris ( eye ) pictures with my camera rather than my phone but i just can get a good enough zoom for excellent detail. I understand that if i hold the camera too close the sensor wont allow me to take the picture but how do i zoom in enough to get great detail in the iris as i need to read the eye . What settings should the camera be on , do i need flash etc also i have attached a picture of my camera and another attachement that he bought for it , but im guessing that attachement is for further away objects , as i say ... a dinosaur from Ireland 

[p4pictures]

The two lenses you have with your camera - the smaller looks like an EF-S 18-55mm and the larger is the 75-300mm are ok for general photography, but not suited to closeup work such as photographing the iris of the human eye.

You will need to use a different lens, one that lets you achieve at least life-size 1:1 reproduction. Your camera has a sensor that is 22.5mm x 15mm, to fill that whole frame with an object measuring 22.5mm x 15mm will require a 1:1 ratio, and that means a macro lens. 

You have two choices, the expensive but incredible EF 100mm f/2.8L Macro IS USM, or a used lens such as the EF-S 60mm f/2.8 Macro USM or EF 100mm f/2.8 Macro USM. All of these can achieve life-size magnification from a distance of 30cm / 12-inches. When you look at the images on a screen or print the human iris will be larger than life.