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Wide angle Lenses with focal lengths shorter than 14mm.

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  #16  
Old 23rd June 2018
Harold Gough Harold Gough is offline
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Re: 15mm f8 body cap lens any one?

Quote:
Originally Posted by Pistnbroke View Post
Well lets say we put a camera with a 20mm lens on a tripod and take a picture . then we change the lens for a 10 mm . the picture is now twice as wide and twice as tall ie 4x as big/4x the area . or to look at it another way the original pic taken with the 20 mm only occupies 1/4 of the frame area . Or our original pic covered 16mp but now that same view only covers 4 MP with the 10 mm lens.
So clearly we have less Pixels on Image or POI which is what all bird photographers are interested in .
You need to differentiate between field of view, or angle of view, and image size/sensor coverage if you want to discuss such matters.

Harold
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  #17  
Old 23rd June 2018
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Re: 15mm f8 body cap lens any one?

same camera same tripod position . Halve the focal length puts the original picture on 1/4 the sensor area..
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The Master Masons....Nikon D810 x 2 + 28-300 x 2,D 800 with Samy 14mm f2.8 D7100, D7200 with 18-140, and 24-85 FX, Tamy 100-400 + Nikon 200-500mm
The apprentice..... Olympus OMD M5 Gripped + 14-42 R ,40-150 R,15mm F8 body cap lens.
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  #18  
Old 23rd June 2018
Harold Gough Harold Gough is offline
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Re: 15mm f8 body cap lens any one?

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Originally Posted by Pistnbroke View Post
same camera same tripod position . Halve the focal length puts the original picture on 1/4 the sensor area..
"Breaking news"!

Basic photography, page one!

Harold
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  #19  
Old 23rd June 2018
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Re: 15mm f8 body cap lens any one?

Harold ..can you articulate more on the problem like they do on Nikon Rumours . The communication level is below that of Nikonites .
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The Master Masons....Nikon D810 x 2 + 28-300 x 2,D 800 with Samy 14mm f2.8 D7100, D7200 with 18-140, and 24-85 FX, Tamy 100-400 + Nikon 200-500mm
The apprentice..... Olympus OMD M5 Gripped + 14-42 R ,40-150 R,15mm F8 body cap lens.
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  #20  
Old 23rd June 2018
Kami Kami is offline
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Re: 15mm f8 body cap lens any one?

I'm coming a bit late to the party, I see, but anyway ... sniping aside ...



I have the EM5 (and some other bodies, including Canon FF - but you didn't come here to hear about Canon, or, indeed, Nikon) and the 15mm / f8 and ... it's not the best lens. In fact, I've rarely used it. I much prefer the Panasonic 20mm / f1.7 for complete pocketability with my EM5. I also have the Panasonic 12-32 which is pretty compact when in pocket, and gives very good images.


Other compact alternatives are the Oly 17mm/2.8 pancake, the Oly 14-42 EZ, and the Panny 14mm/f2.5 - I've not used any of these.



If you don't mind manual focus, then Pentax 110 manual lenses are also good fun to use, and TINY. All are f2.8. The 18mm focusser gives better results than the 18mm Panfocus, the 24mm the tiniest of the lot. The 50mm and 70mm give excellent results, but are getting less compact. I use my Sigma 60/2.8 more than the last two, and the Panny 20/1.8 more than the first three.


I've also been pleased with the Samyang 7.5mm/f3.5 - which is also manual focus. You could crop this one to give a 15mm equivalent if you wished ! I think the image would be better than I've got from the bodycap 15/8 :-)

Last edited by Kami; 23rd June 2018 at 05:55 PM. Reason: clarity
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  #21  
Old 23rd June 2018
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Re: 15mm f8 body cap lens any one?

Thanks Kami for your intelligent and informative reply.I will stick with the 15mm lens cap for my holiday use.
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Old 2nd July 2018
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Re: 15mm f8 body cap lens any one?

I expect that Pistnbroke will be heading the Leader Board for monetary contributions to the Forum.
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  #23  
Old 2nd July 2018
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Re: 15mm f8 body cap lens any one?

put your money where your mouth is and help suppport the forum
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  #24  
Old 2nd July 2018
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Re: 15mm f8 body cap lens any one?

Sorry but this is the first time I have heard anyone talk about money to pay for this forum so please inform me of the financial structure you are talking about...
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Old 2nd July 2018
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Re: 15mm f8 body cap lens any one?

http://e-group.uk.net/forum/showthread.php?t=48195
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