where there’s smoke there’s fire

I am going to try something new – I will start featuring guest posts on NikonRumors. If you have an interesting Nikon related topic, drop me an email and we will talk.

The trick is that the topic has to be about something interesting and unique. Explaining the difference between FX and DX for example will not cut it because there is already so much info available online. Just showing your portfolio would also not work, unless there is something really special about it – for example shooting underwater or shooting tornadoes in 3D. Maybe you have a rare piece of Nikon equipment or any DYI tricks, etc –  I think you get my point.

Today Nikon launched new global NPS (Nikon Professional Services) website located at http://nps.nikonimaging.com.

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Luminous-landscape has a very interesting article on how camera manufacturers are silently increasing the ISO in order to compensate for light loss from the lens. The whole analysis is based on data from DxOMark:

click on graph for larger view

The above graph show the light loss at the sensor level for different Canon and Nikon cameras when using a f/1.4 lens wide open. For example, the D3s has -0.30 EV light loss, the D300s has -0.52, the D40 has -0.80, etc. In order to compensate for this light loss and produce correctly exposed images, camera manufacturers are compensating by “secretly” increasing the ISO. The author Mark Dubovoy goes even further by saying that you may get better results with smaller aperture lenses, since they have less light loss and that this phenomenon is also destroying the bokeh:

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