Mirrorless cameras part 2.

Started Mar 7, 2013 | Discussions thread
EinsteinsGhost
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Re: Mirrorless cameras part 2.
In reply to joejack951, Mar 8, 2013

joejack951 wrote:

This whole series of post started with the claim that mirrorless wide angle lenses can be made "very small" compared to the DSLR lenses. I disputed that claim referencing several small DSLR wide angles and pointed out how most mirrorless wide angles are only small due to their small apertures (relative to full frame DSLR lenses).

Leica lenses do show that you can make a smaller ultra-fast wide angle for mirrorless but it's not much smaller and at least in the case of Leica, the price is massive.

And irrelevant to this discussion.

You seem to think I'm dismissing comparing APS-C DSLR lenses to APS-C mirrorless lenses. I'm not dismissing it. I'm admitting that APS-C DSLRs fail to deliver on smaller lenses when equivalent apertures are considered just like mirrorless APS-C (and m4/3 for that matter) fail to deliver as well.

My point being comparison between Mirror-less cameras versus Mirrored cameras, where lenses are only a part of the equation, not the whole package.

You cannot dismiss the fact that mirror-less cameras are allowing smaller and lighter lens designs compared to their mirrored counterparts.

I don't even know how to respond to this. I don't know why you keep bringing up the size of a particular camera body when we are trying to discuss the size of lenses. Maybe you are just intentionally trying to confuse/frustrate me. It's working.

You will be frustrated if you can't respond logically. So, try the latter and explain to me why sensor size is not important. Are you unaware that APS-C lenses (for DSLRs) can be, and are being, made smaller compared to their FF equivalents?

Let us look at it the other way around. Sony has apparently filed patents for FF mirror-less lenses. Do you think Sony could make a lens for FF mirror-less in the same packaging as its APS-C lenses for mirror-less?

One last time:

25mm on m4/3 gives a 44 degree angle of view. A 25mm f/1.4 lens has a 17.8mm aperture.

50mm on FF gives a 44 degree angle of view. A 50mm f/1.4 lens has a 35.7mm aperture.

In order to make a m4/3 lens truly equivalent to a 50mm f/1.4 on full frame, you'd need a 25mm f/0.7. In order to have a FF lens equivalent to a 25mm f/1.4 lens on mirrorless, you'd need a 50mm f/2.8 lens.

1- You're assuming mirror-less camera cannot use FF sensor. It can only use smaller sensors.

2- You're assuming that a DoF argument can be applied to exposure. Right?

Which do you think will be cheaper/smaller? For reference, 50/1.8 lenses for FF sell for $100-200 right now. The Panasonic 25mm f/1.4 is $500. The Nikon 50mm f/1.8G is about the same size and weight as the Panasonic.

There is a hell lot more that decides pricing than specs.

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