Archived posting to the Leica Users Group, 2014/10/11

[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]

Subject: [Leica] Unexpected camera limitation
From: kanner at acm.org (Herbert Kanner)
Date: Sat, 11 Oct 2014 10:04:42 -0700
References: <ADC88CED-289F-4421-8A3A-E07E62E0AECC@acm.org> <737A5612-C5D5-40FD-A821-D39ECFC02A94@btinternet.com>

I just checked the specs of my X100S, which has a 23.6 x 15.6 mm sensor and 
a focal length of 23 mm. It has an  f/2 lens which stops down to f/16.

Unfortunately, it is now out of my hands for warrantee repair.

Herbert Kanner
kanner at acm.org
650-326-8204

Question authority and the authorities will question you.




On Oct 10, 2014, at 9:52 PM, Frank Dernie <Frank.Dernie at btinternet.com> 
wrote:

> The depth of field and onset of diffraction limit for sharpness is 
> completely different in small sensor cameras than those of 35mm. Very few, 
> if any, of these small sensor cameras stop down less than f8 since the 
> loss of sharpness due to diffraction is significant and the increase in 
> DoF unnecessary.
> They didn't think of the type of thing you were trying to do, I suppose, 
> or making such a small aperture accurate (f16 on a 5mm fl lens is 0.012") 
> is not economically feasible.
> 
> Frank D.
> 
> On 10 Oct, 2014, at 23:34, Herbert Kanner <kanner at acm.org> wrote:
> 
>> I just ran into a totally unexpected limitation of my Panasonic DMC-LX5, 
>> A camera which retailed new for $400, or with Leica brand, cosmetics, and 
>> firmware, $800. I was trying to photograph a small decorative waterfall, 
>> set the shutter to 1/15 to fuzz up the water, and picked the lowest ISO 
>> available: ISO 80. Then I discovered that the camera simply would not 
>> stop down below f/8, giving an impossible over exposure. Would I have 
>> bought the camera had I known this?I wonder. 
>> 
>> I did get it at half the new price, so I suppose it?s better than 
>> anything I could get new for $200.
>> 
>> Herbert Kanner
>> kanner at acm.org
>> 650-326-8204
>> 
>> Question authority and the authorities will question you.
>> 
>> 
>> 
>> 
>> 
>> _______________________________________________
>> Leica Users Group.
>> See http://leica-users.org/mailman/listinfo/lug for more information
> 
> 
> _______________________________________________
> Leica Users Group.
> See http://leica-users.org/mailman/listinfo/lug for more information
> 



Replies: Reply from Frank.Dernie at btinternet.com (Frank Dernie) ([Leica] Unexpected camera limitation)
In reply to: Message from kanner at acm.org (Herbert Kanner) ([Leica] Unexpected camera limitation)
Message from Frank.Dernie at btinternet.com (Frank Dernie) ([Leica] Unexpected camera limitation)