Good points, these last few comments. For me, I knew I was ready to move up from a p/s to a dslr when I realized I couldn't control aperture the way I wanted to.
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How much DOF do you want?
50mm f/177 gives hyperfocal at 74cm, that's everything sharp from 37cm to infinity...
('sharp' being a relative term, of course)
But why is this a good combo? Please explain to a novice photographer haha.
Just ordered my 5D mk3 plus 24-105mm and wanting either a 17-40mm or maybe the 16-35mm if my piggybank can stand it. I know the 17-40mm has more CA and distortion but wondered how well images can be cleaned up using the Lens Optimiser part of DPP - any comments?
Thanks for any opinions,
Folks, they're not going to update the 135mm f/2 SF just so that it can compete with the current 135mm f/2 L.
I assume you're talking about the 135 f/2.8SF, an old design with film era relevance which will probably quietly disappear from Canon's inventory sometime soon. I wonder how many they sell per year? It's the venerable 135 f/2L which also hales from last century, April 1996 to be exact which I'm hoping to see upgraded.
#4 - 135mm f/2.0 - aperture, image stabilization (16 year old design, there are plenty of 135mm f/1.8 lenses around, would love to see f/1.8 + IS, like a mini 200mm f/2.0 IS)
RIGHT, Let us talk about phsical laws. A small sensor will only need a shorter focal length to give the same angle for a bigger sensor. Micro 3/4 has a mutiplicayion factor of 2. So the 14 mm Panasonic ancake lens will be equilvalent to a 28mm lens on a full frame. The 14mm will need a total of 40mm (20mm for the lense, 20mm for the fringe depth). That is a ration of 2.86. Now apply this ration for the 28mm for FF. than it will need 80mm. That is physical Law. Sensor size does not matter??? The bigger the sensor, the bigger the lense for the same viewing angle.
Thr Fringe diatance can be set to anything by the manufacturer to suit the usage. NEX fringe is set so thin for the using of adapter for the OLD range finder lenses,like Leica, Canon etc. The fringe distance can be set independent of the back focal plane distance. For mirrorless, the lenses have the luxury of going inside of the body and into the body. Have you look at the Leica wide angle lenses lately??? As the the rumores 1mm back focal distance lens from Canon, it is going to be huge. In order for it to work, the rear element of the lens MUST cover the whole sensor. What it mean is the lense will ge going inside of the fringe and way into the body. You just cannot make a cmera body with a 1mm fringe distance.
Here comes the phsical law again. the size of the optic is determined by the focal length, speed of the lens and the associated mechanical and electronics part. It got nothing to do wit hthe fringe distance (except for wide angle lens for range finder cameras, that is another story). Just look at the pancake lens from Panasonics. The optics are small, the lens dismeter is large. That is for the mechanical and theelectronis component. It has got nothing to do with the fringe distance.
Also, who'd want a 50mm f14?
Yeah, but I actually find I use my 70-200 for a lot of landscape shots. I don't always have a tripod with me, but 1/10th or 1/15th is enough to blur a water falling. Or it might be the difference between shooting the landscape at f/4 or f/8.
I went with the IS version because it was sharper, but I think I've found some use for the IS here and there.