converter?

Can someone tell me what is a converter and when do I use it.

In easy terms a converter extends the range of your lens. Take a 1.4 x TC, it will take a 300mm to 420mm (300*1.4=420). It mounts to the camera body and then the lens mounts to it.

It also reduces the amount of light hitting the sensor. 1 stop for the 1.4 and 2 stops for the 2.0.

Hopefully your talking about a TC rather than a raw converter.

True. Then it would be helpful if you said what you need the lens to shoot? Remember, It also reduces the amount of light hitting the sensor + you will get a noticeable drop in quality with some lenses.
70-200 f/2.8 & 2X TC combination "Test"

eddarr thank you for the info, but I am new at this, so... I don't even know what is the difference betwen the two of them.

Thanks again cheekaa

Just the amount of magnification and the loss of light. The 1.4 will increase magnification by 40% and one stop of light. The 2.0 will increase magnification by 100% and two stops of light.

Assuming that you will be able to get good shutter speeds the loss in light may not be a big issue.

Cheers!!!
thank you!

Jamie Holladay wrote in post #5798872
In easy terms a converter extends the range of your lens. Take a 1.4 x TC, it will take a 300mm to 420mm (300*1.4=420). It mounts to the camera body and then the lens mounts to it.