{"id":174,"date":"2008-07-06T00:05:31","date_gmt":"2008-07-05T22:05:31","guid":{"rendered":"0a6be351-1e7d-422a-949c-9ec2f6dc178d"},"modified":"2008-08-20T01:12:49","modified_gmt":"2008-08-19T23:12:49","slug":"zooming-into-letus-ultimate-ground-glass-when-using-a-prime-lens","status":"publish","type":"post","link":"https:\/\/philipbloom.net\/blog\/zooming-into-letus-ultimate-ground-glass-when-using-a-prime-lens\/","title":{"rendered":"zooming into Letus Ultimate ground glass when using a prime lens"},"content":{"rendered":"

Generally when using a 35mm adaptor Prime lenses are recommended. Mainly because they are generally cheaper and more importantly faster.<\/p>\n

The fastest prime lens I own is an F1.2 Nikon. But generally mine are around f1.4 up to f2.<\/p>\n

Zoom lenses are always slower by necessity as they cover different focal lengths. There are some awesome zooms out there. I own a Nikon 17-35mm F2.8 a 80-200 f2.8 and a Sigma 28-80mm f2.8. As you can see these are all f2.8. Cheaper zooms in this focal length are slower, around f3.5 or higher and on the zoomed end around f5.6. Now this is fine for some situations but with adaptors you need all the light you need.<\/p>\n

So if prime lenses are what most people should use then you get the problem of fixed focal length. 50mm is 50mm etc… So you place your tripod with camera on it, you like the shot but you need to tighten it, with a prime lens that means physically moving forward! A bit of a pain! Also, when shooting interviews and you need to tighten the frame during a question you have to change to a longer lens or again move forward (the latter is not really an option unless you are on a dolly and track, as I did on Anorexia Part 4 and 5)<\/p>\n

Now the great thing about the Letus Extreme and Ultimate (and I hear the SGPRO and BREVIS FLIP) is you CAN zoom a bit into the ground glass to change the frame of the shot, of course the out of focus bokeh doesn\u2019t increase as it would when zooming in on the actual 35mm lens but it does change the shot size.<\/p>\n

With the Ultimate I have found the loss of resolution when zooming into the ground glass all the to the end of lens to be impossible to actually notice.<\/p>\n

<\/p>\n

I was working on a documentary in Ireland last week and whilst filming some interviews in a very bland room I did a lot of zooming in to change frame sizes. Below are some grabs to show this off. The lens was a Zeiss f1.4 85mm shot wide open.<\/p>\n

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