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05-13-2012, 12:38 AM   #1
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Let's do A57 vs K01 review/shootout

Like we had K-5 vs 7D a few years ago. We need A57 vs K01 review.

Why A57 vs K01? Here is the main reason:

Reason 1:
(1) K01 is liveview only camera that uses the old DSLR mount. All other mirrorless cameras abandoned the old mount for their liveview only (mirrorless) system.
(1) A57 is a liveview only camera (no OVF) but still maintains the old Minolta A-mount.

The difference being, Sony took the approach of SLT mirror (1/2 stop more noisy) but retains PDAF AF. Pentax, on the other hand, made it flat mirrorless (no light lost) but lost PDAF AF with DSLR lenses.

Reason 2:
Price: both cameras cost the same amount (A57 is like $50 cheaper, body only).

05-13-2012, 08:18 AM   #2
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Seems like an apples versus oranges scenario.

A more fitting comparison would be the K-01 vs. the NEX-5n. Same sensor, both mirrorless, both full-time LV, both lack PDAF. The K-01 is $746 at B&H, the NEX-5N is $548 at B&H.

At the end of the day, both are pretty much the same, although I think the Sony's AF is faster and more accurate.

DxOMark - Compare cameras side by side The K-01 scored 2 points higher overall, but at $200 more.

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05-13-2012, 11:02 AM   #3
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5N can't use Alpha mount lenses without the adapter. This is very crucial similarity between K01 and A57. Both cameras use the older DSLR mount as their primarily mount, but still both are liveview/EVF cameras. That's what makes them similar, but the approach both took are different to achieve the same thing.
05-13-2012, 11:52 AM   #4
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So far there really isn't anything that fairly compares to K-01. It is a unique "take" on mirrorless.

05-13-2012, 12:50 PM   #5
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Can you list all things that are "unique" on K01 not found on any other camera?

Last edited by ElrondElensar; 05-13-2012 at 01:13 PM.
05-13-2012, 01:53 PM   #6
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See the first paragraph here:
Pentax K-01 Camera Review - Review Introduction - PentaxForums.com

Adam
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05-13-2012, 02:10 PM   #7
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QuoteOriginally posted by ElrondElensar Quote
Can you list all things that are "unique" on K01 not found on any other camera?
+1 Adam's reply. The core concept. If you can't understand that I can't help you.

05-13-2012, 10:55 PM   #8
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QuoteOriginally posted by ElrondElensar Quote
5N can't use Alpha mount lenses without the adapter. This is very crucial similarity between K01 and A57. Both cameras use the older DSLR mount as their primarily mount, but still both are liveview/EVF cameras. That's what makes them similar, but the approach both took are different to achieve the same thing.
...or 1 has a built in EVF and the other does not. Once has a pellicle mirror and the other does not. One is K mount and the other is A mount.

Where to begin/end?

Jason
05-13-2012, 11:13 PM   #9
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QuoteOriginally posted by Adam Quote
Adam, that's exactly the point. A mirrorless camera is nothing more than a camera that doesn't have OVF. It's basically a liveview camera.

K01 is not the only liveview camera that takes hundreds on DSLRs lenses. A57 does exactly the same thing. It can use hundreds of Minolta lenses from 80s, 90s, but yet it's 100% a liveview camera.

That's why this review makes sense. It's two different approached to achieve the same thing.

This not a unique feature of K01 if you look it that way
05-13-2012, 11:26 PM   #10
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QuoteOriginally posted by Jasvox Quote
...or 1 has a built in EVF and the other does not. Once has a pellicle mirror and the other does not. One is K mount and the other is A mount.

Where to begin/end?

Jason
Notice that Adam did K-5 vs 7D review, even though one is K-mount and the other is EOS mount. A57 vs K01 would be the same thing. The point being K01 (and other SLTs) are the only cameras that are 100% liveview cameras but yet use DSLR mount. Yes I know the inside tech is different. SLT loses light but gains PDAF AF. K01 loses PDAF AF but retains 100% light to the sensor. That's why this should be the topic of the review. Two different techs to archive the same goal: DSLR mount but liveview only camera.
05-14-2012, 10:49 AM   #11
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The A57 isn't a mirrorless, though, which is why I think people are saying it's apples to oranges. They need to invent some way to get PDAF w/o a mirror. Until then, I don't think mirrorless cameras will really take off among enthusiasts.
05-14-2012, 12:22 PM   #12
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QuoteOriginally posted by Adam Quote
The A57 isn't a mirrorless, though, which is why I think people are saying it's apples to oranges. They need to invent some way to get PDAF w/o a mirror. Until then, I don't think mirrorless cameras will really take off among enthusiasts.
That's true, but the mirror in A57 doesn't move, so, as far as user is concerned, it behaves identically to a mirror-less camera. It's 100% a liveview camera, and no mirror sound.
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