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Old 23rd December 2014
Filadams Filadams is offline
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Advice: Which normal FOV lens to get

Hello all,

I am looking for prime lens advice. I got an E-PL5 about a year ago as my first serious camera with the 14-42mm and 40-150mm. That has left me wanting some low aperture higher quality primes.

I am planning on getting the 45mm 1.8 as it seems generally accepted as a great deal. However, I would appreciate your advice on what to get for a more 'normal' focal length. I am on a somewhat limited budget so was thinking of getting the panasonic 20 1.7, but would any of you suggest saving up and getting the Oly 17 or 25mm 1.8 instead taking into consideration I am just starting out?

Thanks for your help,
Phil
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Old 23rd December 2014
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Re: Advice: Which normal FOV lens to get

Optically the 20mm is a top drawer performer and makes a good compromise between thw 17mm and 25mm. Up to a point, it can almost do the job of both. My only caveat is that I used to use one with an E-PL1 and found the autofocus very slow, often having difficulty locking on to a subject. Maybe it's better with the more recent Pens?
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Old 23rd December 2014
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Re: Advice: Which normal FOV lens to get

Hi there Phil!

One thing you could do to help decide what focal length to buy is to have a look at the EXIF data from the photos taken with your 14-42mm lens - this should give you a good idea of what you would use the most. Also bear in mind that whilst you can crop a little from round the edge if your lens is too wide and still have an acceptable image (how often do you really need all 16MP?) you can't always add more round the edge if your lens is too long - or at least not without taking multiple pictures and stitching in post-processing which is far more time consuming.

I hope this is of some help,

Cheers,

Ralph.

PS don't forget about the Sigma 19mm and 30mm which are very good value - from £129 brand new and whilst not quite as fast, they are well regarded.
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Old 23rd December 2014
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Re: Advice: Which normal FOV lens to get

Hi Phil.

Like John I have previously used the Panasonic 20mm f1.7 and found that whilst optically fine it was a little slower to focus than the Olympus 17mm and 25mm that I now have. Basically the Panasonic is one of the older m4/3 designs and I think the newer Olympus designs have a superior focus motor/mechanism design.

As far as focal length/field of view is concerned 25mm on m4/3 is equivalent to 5omm on a 35mm camera which was considered to give the "normal" FOV ie. roughly equivalent to what the human eye percieves.

At the moment London Camera Exchange (www.lcegroup.co.uk ) are selling the silver version of the 25mm F1.8 for 259.99 whilst their price for the Panasonic 20mm is 289.99 so the 25mm is actually cheaper.

I have recently posted two threads which will show you the performance I get with the 17mm and 25mm on my E-M5 (which has the same sensor as your E-PL5).

25mm f1.8 http://e-group.uk.net/forum/showthread.php?t=35719

17mm f1.8 http://e-group.uk.net/forum/showthread.php?t=34612


Hope this helps you.

Regards.
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Old 23rd December 2014
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Re: Advice: Which normal FOV lens to get

You can't go wrong with any of the lenses discussed in this thread. I've had all of them at some point, but the only one I have now is the 17/1.8.
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

It used to be that 50mm on full frame 35mm gave the same angle of view as a human eye. In fact 43mm is exactly the same. So around 21mm would be, theoretically, ideal. However, in practice, how often are you going to frame all that you can see, no more, no less?

Harold.
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

In case of any help I have the Panasonic 20mm f1.7 and think it's a really great little lens (I'm no expert but to my eye the IQ of the pictures I have taken with it is really good).
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

SRS have some good deals on several Olympus lenses in their sale which has just started, ends 4 Jan. Around 5-10% off their normal prices, e.g the 25mm f/1.8 is £274.55. I've no connection with them, I'm just a satisfied customer .
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

Quote:
Originally Posted by Harold Gough View Post
It used to be that 50mm on full frame 35mm gave the same angle of view as a human eye. In fact 43mm is exactly the same......

Harold.
I'm confused by this.

A 50mm lens on 35mm has a diagonal angle of view of 46.8 degrees (say 47).
A 34mm lens on 35mm has a diagonal angle of view of 64.9 degree (say 65 ).

How is this "exactly the same"?
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

I think the comment was to the effect that, in fact, 43mm is closer to the normal view of the human eye, rather than 50mm.

It's an imprecise comparison due to us (most of us) having stereoscopic vision, plus eye movement, plus processing by the brain. But the physics is such that a 43mm lens (on full frame) is "the same" as the human eye.
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

It's the same magnification as the human eye.
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Old 24th December 2014
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Re: Advice: Which normal FOV lens to get

Sorry senior moment, misread 43mm as 34mm.
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she looked at me and said "It's official. I hate your camera. It's just so amazing and perfect I want one!"

E-M10 MK II, E-M5, E-PL1, E-PM2, mZ 12-50, mZ 14-42mm EZ, mZ 17mm f 1.8, mZ 25mm f1.8, mZ 45mm f1.8, mZ 75-300mm II.
OM1n, OM 50mm f1.8.
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Old 8th January 2015
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Re: Advice: Which normal FOV lens to get

Thank you all for your advice.

My Dad is long term lending me his pana 20mm as he has moved over to the Nikon 1 system, and also given me his EPL1 as my second camera. I will see how I get on with that lens and focal length and then go from there. While I will still be tempted to get the 17 & 25 at some point, I imagine the 20 will do what I need it to do.

Thanks again,
Phil
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