Prepare yourselves for a new landscape

Started 5 months ago | Discussions thread
stevo23
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Re: Fast does not equal good.
In reply to howardroark, 5 months ago

howardroark wrote:

stevo23 wrote:

howardroark wrote:

sportyaccordy wrote:

When small formats can get to equivalent speeds of large formats I think people will begin to seriously reconsider. Small sensor tech is already beginning to creep. For example RX100-II is only 1 stop down in speed from the typical APS-C sensor, despite being 2 stops down in area. If you have a format that is physically 1 stop smaller than the next step up, but has cleanness parity through tech and faster glass, I do think a lot of folks would move over. For example if Nikon 1 system came out with a 1.8 zoom or 1.2 primes (for reasonable prices) I think a lot of folks would give them a look.

A Nikon 1 lens at f/1.2 may not be enough. What is the conversion factor? 3x? Maybe it's enough for the larger population, but enthusiasts like "us" wouldn't think that's quite enough. That being said, even now, the Nikon 1 fills a need without replacing other kits. I would own one in a heartbeat if I had extra cash to throw around.

I disagree though that big formats will ever go away. People still shoot MF, people will always shoot FX if for no other reason than being invested in the glass. D700, 5DII, D4 etc are all still top of the line in image quality.

The sharpness of a lens is in no way related to its maximum aperture. In fact, most fast lenses are known for being soft wide open. Those fast lenses are also exceptionally expensive when designed with a good diaphram (for good bokeh) and sharp optics. Fast lenses that are cheap are usually full of compromises that essentially nullify their speed.

I'm not sure there are any hard and fast rules about "fast" lenses. I can think of several that are quite sharp wide open as that is generally the point. It does kind of depend on what is meant by "most fast lenses" - f/2.8? f/1.4? For instance, Canon 135 f/2, Sigma ART 35 f/1.4. I also like the Canon 35 f/2 - it's a fairly fast lens with really nice bokeh and not very expensive. Same thing goes for a Nikon 60 f/2.8 G Micro which has wonderful bokeh as well as the very reasonably priced Nikon 85 f/1.8G. There are quite a few reasonably priced, fast lenses that look great wide open. Of course they often "peak" at f/5.6 or so, but they are quite sharp wide open.

I guess I classify expensive in a different way than others. A prime lens is not terribly flexible, and if you want a range of focal lengths you suddenly have to pay a metric buttload of cash to get it. However, if you have a zoom lens that is also fast you still have to pay quite a bit to get something sharp at all focal lenghts and apertures, but probably less than several primes and definitely in a much more flexible package. Also, if you want a prime that has IS you go from $300 to $500 and then if you want a really fast prime you go up to $1,500 (Canon 35mm f/1.4).

Yea, it's certainly a dilemma all the way around. And truly, shallow DOF work is only a subset of what some people do. I suspect few actually get into shallow DOF work and even fewer do well at it. (And by shallow DOF, I don't just mean subject isolation which can be well had even at f/4 in certain settings.)

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