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25mm 1.4 vs canon 50 1.4 size


imnotaniceboy

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I dont get it. if digilux 3/l1 has a smaller sensor size why LEICA is making such a big lens. The D 14-50 is smaller than the canon ef 24-105 f4L.

 

25mm 1.4 panasonic

Approx. 525 g

Overall length 75 mm

 

canon 50mm 1.4

2.9" x 2.0", 10.2 oz. / 73.8 x 50.5mm, 290g

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I dont get it. if digilux 3/l1 has a smaller sensor size why LEICA is making such a big lens.

Due to the smaller size of the 4/3 sensor as compared to a full-frame 35mm-sized sensor, the lenses used must be of proportionately higher resolution in order to achieve similar levels of detail at similar print sizes. As a rule (although there are exceptions, of course), higher resolution lenses also tend to be physically large. As such, it's unlikely that 4/3 lenses will ever be physically smaller than their 35mm-format counterparts of an equivalent focal length and speed...

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really more to do with the architecture of 24mm or so lenses

other lenses in similar FL are:

 

Sigma 24/1.8 84Dx 88L 77mm filter

Leica D 25/1.4 78D×64L 62mm filter

Canon EF24/1.4 77.4Dx 83.5L 77mm filter

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4/3 lenses are optimized for digital use. Resolution will not increase lens size significantly or does anyone feel really bad with the 24/28 mm M lenses. The problem is to build a telecentric lens - a lnes where all rays hitting the sensor are parallel unlike the extreme angles you produce with classic lenses. To accomplish this the lens has to be longer and wider than a normal lens for te same format in film. We also expect low vignetting (wider front element) and minimum CA.

4/3 cameras are not smaller than 35mm based bodeis and 4/3 lenses are not smaller than 35mm lenses. The system itself produces better results per pixel - but the system is a small one (not many components) and the size of the 4/3 sensor is rather small as well - hard to cramp more pixels in it than in a larger format sensor.

The 1.4/25 Leica lens appears to be a perfect 4/3 normal lens.

We should not compare the 25 mm for 4/3 with a 24 mm for 35mm sensors - very different desgins.

Btw talking Canon and size. The 1.2/85 is not large, it is huge and not usable for everyday shots. The Leica 25 is not small, but not really large.

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