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Lenses / Re: Andy Rouse Reviews the EF 200-400 f/4L IS 1.4x
« on: May 14, 2013, 09:04:58 AM »
A lovely review. Worth of reading even if you never buy one of these toys.
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Well, it's true and false in the same time. on 1:1 imagination - true. the smaller pixel you have, the more details you can capture. and details mean movements as well.how MP are connected to SS?
MPs are not really connected, but pixel size is, and in general, more MP means smaller pixels. A given amount of shake means a specific amount of movement in terms of arc-seconds. With smaller pixels, a given amount of movement covers more pixels on the sensor, which translates to more blur. So, smaller pixels means you need an even faster shutter speed to compensate for camera shake. 1/FL is a film rule. Even 1/1.6xFL is not enough on a high MP, small pixel sensor.
so downscaling, let's say 24Mp to 8Mp gives the same result as originally captured image with 8Mp.
how MP are connected to SS?I keep on asking: why you need IS in this lens? to shoot 1/10? well, almost all "moving subjects" can do a lot of stuff within this time range, so you'll get blurred image anyway (well, with another kind of blur, but...). for non-moving subjects only?
Introducing this lens together with high MP body will force you to use higher shutter speeds at the same time even for static objects... or simply leaving IS on
well, as I said, this possibility exists only for non-moving subjectsI keep on asking: why you need IS in this lens? to shoot 1/10? well, almost all "moving subjects" can do a lot of stuff within this time range, so you'll get blurred image anyway (well, with another kind of blur, but...). for non-moving subjects only?
It's about having the flexibility to go slow when there's a need. The two new wide primes with IS - I wonder if the people using them turn IS off? I'm betting no...
I understand their scores for what they are, and more importantly, what they are not. So...I don't care.+1
The M9 sensor is manufactured by Kodak and not too impressive if you look here:
http://www.dxomark.com/index.php/Publications/DxOMark-Reviews/DxOMark-review-for-the-Leica-M9
Leica is a niche product, and they have a lot of elitist followers to the brand name. In that sense the true technical ability is secondary to the product image. Such is the world of marketing.