Luminous Landscape Forum

Equipment & Techniques => Medium Format / Film / Digital Backs – and Large Sensor Photography => Topic started by: ghoonk on January 22, 2012, 07:26:08 am

Title: Making sense of MF vs 35mm lens equivalents
Post by: ghoonk on January 22, 2012, 07:26:08 am

Right, I'm properly confused now

I'm on the H4D-40 (1.3x crop factor), and here's what I thought I understood up until now:

Using the CaptureOne focal length calculator, and inputing into the P30 column since the P30 is a 1.3x crop and same size, i.e. 44x33, as the H4D-40 sensor:

28/4 HCD on H4D-40/31 = 22mm on Nikon D3
35/3.5 HC on H4D-40/31 = 28mm on Nikon D3
50/3.5 HC on H4D-40/31 = 39mm on Nikon D3
80/2.8 HC on H4D-40/31 = 63mm on Nikon D3
100/2.2 HC on H4D-40/31 = 78mm on Nikon D3
120mm HC Macro on H4D-40/31 = 94mm on Nikon D3
150mm HC on H4D-40/31 = 118mm on Nikon D3
210mm HC on H4D-40/31 = 165mm on Nikon D3

is this about right?

Title: Re: Making sense of MF vs 35mm lens equivalents
Post by: yaya on January 22, 2012, 07:34:10 am

You mean Capture Integration (http://www.captureintegration.com/2009/02/03/focal-length-equivalent-calculator/)

And yes it is about right

yair

Title: Re: Making sense of MF vs 35mm lens equivalents
Post by: ghoonk on January 24, 2012, 02:10:39 am

Thanks, Yair - helpful as always!

Title: Re: Making sense of MF vs 35mm lens equivalents
Post by: hasselbladfan on January 30, 2012, 12:12:00 pm

On a 31 or 40 back, it is easy to remember. Take -20% off.