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The lounge Relax, take a break from photo and camera talk - have a chat about something else for a change. Just keep it clean and polite!

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  #16  
Old 22nd November 2015
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Re: U43 format - why 1/4 FF

If you follow the 4/3 diagonal to the edge of a full frame sensor, it's more like 1/3 of the area and not 1/4. The remaining 25% of the long thin sensor is generally a waste, unless you need a panoramic format.

As FF bodies and lenses tend to be very big, it would make sense to make a 4/3 ratio full frame sized sensor. FF bodies and lenses could then be 25% smaller.
Most sensor sizes are 4/3 ratio
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  #17  
Old 22nd November 2015
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Re: U43 format - why 1/4 FF

Oh, from my googling I observed the linear dimensions, x and y, are half that of the FF 35mm, therefore 1/4 of the area.
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  #18  
Old 22nd November 2015
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Re: U43 format - why 1/4 FF

1/4 of the whole long thin sensor. But about 1/33 of the useful 4/3 part. The FF sensor is a weird legacy shape that on average will not be fully used. Actually, FF lenses are capable of covering a bigger sensor than they do, if only they made a shorter sensor, it could then be taller. If you don't have a mirror, there is no need to stick to a fixed ratio.
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Old 22nd November 2015
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Re: U43 format - why 1/4 FF

From my point of view, where Micro 4/3 really excels is in the telephoto department, such M4/3 optics are so much smaller and lighter than those for a 24x36mm sensor dSLR.

If however you have no need for a lens above 135mm ( 35mm terms ) then M4/3 compactness does not always win out. My Leica M-E has a 24mm x 36mm sensor .... in other words one with a surface area 4x larger and IMO at least, is not very much larger than an E-P5 plus the 35mm F2 Summicron is a TINY F/frame lens.

Take a look here...... http://camerasize.com/compare/#459,388

Admittedly the Leica costs a heck of a lot more ( my M-E & 35mm F2 set me back almost £6k ) and is not for everyone, also native lenses do not go beyond 135mm. However for those who may not be familiar with a Leica 'M' the above comparison may well be an eye opener.

I am sure that Olympus ( and Kodak remember ) chose a 17x13mm sensor because as already said back in the early 2000's sensors were very expensive plus a comprehensive range of new optics of the necessary quality to cover a 24x36mm sensor would have cost Olympus an awful lot in R&D.

The IQ out of my M-E at low ISO is simply breathtaking and it has quickly become my 'walk-about camera' of choice when I want a 'digital' option ( film is still my preferred choice ). However I am definitely going to get back into M4/3 for extreme-telephoto use. I have thought of getting another 5mk2 although TBH the E-P5 is such a bargain S/H I think that is the route I'll take, it's still a great camera and typically one can buy a S/H E-P5 & 75-300mk2 for £500.00 ... that is one hell of a lot of camera and reach for the money

Kind regards, Simon
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Old 22nd November 2015
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Re: U43 format - why 1/4 FF

Keep an eye on EM5ii prices. There are huge savings already.
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Old 22nd November 2015
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Re: U43 format - why 1/4 FF

Hi Simon, have to agree with the M-E, well I would wouldnt I

I was just about to post this http://photoseek.com/2013/compare-di...s-1-inch-type/ but you got in first.

Actually, I'm thinking about selling my 'black' E-P5 plus VF-4, if you're interested. At a guess I think it has less that 500 clicks (I will check) and is in absolutely pristine condition, like new in fact. Purchased from SRS and is still in warranty.
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Old 22nd November 2015
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Re: U43 format - why 1/4 FF

Quote:
Originally Posted by Ricoh View Post
Hi Simon, have to agree with the M-E, well I would wouldnt I
Steve - I've just been to your Flickr site and I must say you're using your Leica to great effect! There are some stunning street images you've taken there. This one just has to be my favourite though (I guess it's OK to post links to your image here!!??):


Hard work museums by Steve Wales, on Flickr

(even if it's taken with a GM5!)
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  #23  
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Re: U43 format - why 1/4 FF

Hi Paul, thanks for the nice comments
The image linked above was actually taken with a u43 camera, the trusty, stealthy GM5 coupled with the brilliant PL 15mm f/1.7
It was a picture begging to be taken, although I don't think the mum was too pleased with me taking her passport photo, or maybe she was ?
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