Focal point question ?

[Fivetide]

Hi (I’m a total noob) I bought my first macro lens today from Jessops, an EF100mm f/2.8 Macro USM. I watched a few YouTube videos and decided to quickly snap a few shots of random stuff with my new found knowledge. But I have a question; on the videos their photos didn’t seem to have such a narrow focus point, I took the photos on auto to make it simple and then I’ll try the advice from here after. I’d like to get more of the subject in focus is that possible?
Camera Canon EOS 600D
Exposure 0.006 sec (1/160)
Aperture f/2.8
Focal Length 100 mm
ISO Speed 640
Exposure Bias 0 EV
Flash No Flash

All help greatfully recieved

 

[steevee]

U could close down the aperture a little, but you may also need more light in doing so.

I would experiment, trying in each increment of change to the aperture.

 

[Chaz Photos]

With a 100mm lens you need to stop down to at least f/11 or more to get any kind of DOF.
at f/2.8 if your 100cm away you will get 0.97cm in focus but at f/11 you will get 3.85cm in focus at f/16 you get 5.48 cm
So if you are nearer then this is will be less.
Take a look here

 

[steevee]

With a 100mm lens you need to stop down to at least f/11 or more to get any kind of DOF.
at f/2.8 if your 100cm away you will get 0.97cm in focus but at f/11 you will get 3.85cm in focus at f/16 you get 5.48 cm

What I meant in a round about fashion ;-)

 

[Blank_Canvas]

Most Macro photographs benefit from a small aperture to increase the depth of focus (e.g F/16), that should reduce the blurriness of your diode (is that a diode in pic 1?), The smaller the aperture (hole), the greater the length of exposure required (time).

You could try shooting this in the Aperture Priority mode but you will need a tripod or the camera supported. There is some really good information in the Macro thread. Matt is also very helpful and will no doubt post on here in the near future.

Do persevere it's worth the effort but you have made a great start

 

[MWHCVT]

With macro you are always working with very narrow DoF, so if you want everything or Lot's to be in focus your need to either stop down and use flash so go to the suggested f/16 there is however another option, not something that I've ever attempted myself but I have seen it done on here a number of times and that is focus stacking, where you take multiple exposures focusing on different sections and then merge those together in PP

Here is a youtube tutorial on focus stacking though there are lot's of them

[YOUTUBE]intzev1gsbI[/YOUTUBE]

You may also want to check THIS In the tutorials section

I hope this helps

Matt
MWHCVT

 

[Fivetide]

Yes well wow , awsome replies .. MWHCVT thanks very much thats exactly what i was looking for..

still some problems but i think I shoud have taken one ore two more shots but i rushed to see the results lol ..latest try with the youtube vid on other screen But the method is sound ... thanks again everyone