If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
The D50 still works
On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA
wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens |
#2
|
|||
|
|||
The D50 still works
On 08/08/2015 04:00, RichA wrote:
On Friday, 7 August 2015 20:07:47 UTC-4, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens They are worse. They heat up more and retain the heat longer. Metal would retain heat longer than plastic. -- Cheers, David Web: http://www.satsignal.eu |
#3
|
|||
|
|||
The D50 still works
On Fri, 7 Aug 2015 20:00:31 -0700 (PDT), RichA
wrote: On Friday, 7 August 2015 20:07:47 UTC-4, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens They are worse. They heat up more and retain the heat longer. Your bias against plastic is causing you to talk thermodynamic nonsense, -- Regards, Eric Stevens |
#4
|
|||
|
|||
The D50 still works
On 8/8/2015 4:26 AM, Eric Stevens wrote:
On Fri, 7 Aug 2015 20:00:31 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 20:07:47 UTC-4, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens They are worse. They heat up more and retain the heat longer. Your bias against plastic is causing you to talk thermodynamic nonsense, The correct scientific term for his logic is: "lasso thermodynamics" ;-) -- PeterN |
#5
|
|||
|
|||
The D50 still works
On 09/08/2015 01:41, RichA wrote:
On Saturday, 8 August 2015 02:09:15 UTC-4, David Taylor wrote: On 08/08/2015 04:00, RichA wrote: On Friday, 7 August 2015 20:07:47 UTC-4, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens They are worse. They heat up more and retain the heat longer. Metal would retain heat longer than plastic. -- Cheers, David Web: http://www.satsignal.eu No, metal sheds heat faster. How many plastic heat sinks do you see on CPU's? Have it your own way.... I give up. -- Cheers, David Web: http://www.satsignal.eu |
#6
|
|||
|
|||
The D50 still works
On 8/9/15 12:31 AM, in article , "David Taylor" wrote: On 09/08/2015 01:41, RichA wrote: On Saturday, 8 August 2015 02:09:15 UTC-4, David Taylor wrote: On 08/08/2015 04:00, RichA wrote: On Friday, 7 August 2015 20:07:47 UTC-4, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...2/2015-08-07-3 -X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens They are worse. They heat up more and retain the heat longer. Metal would retain heat longer than plastic. -- Cheers, David Web: http://www.satsignal.eu No, metal sheds heat faster. How many plastic heat sinks do you see on CPU's? Have it your own way.... I give up. He does have a point there. Same with automobile radiators: If it were possible, the manufacturers would go to lightweight plastic for everything (like bumpers, etc) for mileage improvement. But radiators do best with metal fins, not petroleum-based materials. My .02... |
#7
|
|||
|
|||
The D50 still works
On 2015-08-07 20:07, Eric Stevens wrote:
On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. Only by chance! Specific heat is generally given by mass. But since plastics are generally less dense than metals one would have to compare by volume in the context of metal v. plastic cameras. "dense" plastics have heat density of around 1.7 j/gK wheras metals are closer to 1. Magnesium's density is about 1.75 g cm^-3 whereas polycarb is about 1.2 g cm^-3. In the end, close to a wash. I'd expect, however, when taken out of sunlight for the metal camera to cool quicker because of the better conductivity (heat) of metal. It's germane to note than in home air exchangers the heat exchanger is made of plastic for many reasons. (Economy in material and manufacturing, very thin walls (conductivity), resistance to corrosion, etc.) |
#8
|
|||
|
|||
The D50 still works
On 2015-08-08 04:26, Eric Stevens wrote:
On Fri, 7 Aug 2015 20:00:31 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 20:07:47 UTC-4, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. -- Regards, Eric Stevens They are worse. They heat up more and retain the heat longer. Your bias against plastic is causing you to talk thermodynamic nonsense, They will retain heat longer but only because of thermal resistance. Other than that little difference. |
#9
|
|||
|
|||
The D50 still works
On Sun, 9 Aug 2015 11:24:30 -0400, Alan Browne
wrote: On 2015-08-07 20:07, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. Only by chance! Specific heat is generally given by mass. But since plastics are generally less dense than metals one would have to compare by volume in the context of metal v. plastic cameras. "dense" plastics have heat density of around 1.7 j/gK wheras metals are closer to 1. Magnesium's density is about 1.75 g cm^-3 whereas polycarb is about 1.2 g cm^-3. In the end, close to a wash. I'd expect, however, when taken out of sunlight for the metal camera to cool quicker because of the better conductivity (heat) of metal. It's germane to note than in home air exchangers the heat exchanger is made of plastic for many reasons. (Economy in material and manufacturing, very thin walls (conductivity), resistance to corrosion, etc.) We are not talking about transient heating but a situation where the temperature of the camera comes into equilibrium. The temperature of the camera will eventually be that of the inside of the car unless the camera is in the sun, in which case solar absorbtion and later reradiation will have to be taken into account. The color and the suface finish is the primary factor as far as radiation is concerned. It doesn't matter whether the camera is made of metal or plastic. It will get at least as hot as the inside of the car. -- Regards, Eric Stevens |
#10
|
|||
|
|||
The D50 still works
On 2015-08-09 18:00, Eric Stevens wrote:
On Sun, 9 Aug 2015 11:24:30 -0400, Alan Browne wrote: On 2015-08-07 20:07, Eric Stevens wrote: On Fri, 7 Aug 2015 16:04:34 -0700 (PDT), RichA wrote: On Friday, 7 August 2015 18:13:52 UTC-4, Tony Cooper wrote: I mentioned I keep an old Nikon D50 that I bought for cheap in the trunk of my car as a back-up. Someone asked if the Florida heat is a problem. Returning from an errand earlier today I saw a pair of Sandhill cranes in my yard. I pulled out the D50 and took a photo. https://tonycooper.smugmug.com/Curre...08-07-3-X2.jpg The heat doesn't seem to have bothered the camera. I added the vignette only because the background is a little blah. I am glad someone asked. The battery was low, so it's charging now. -- Tony Cooper - Orlando, Florida Plastic bodied cameras are ok with heat as long as they aren't in direct sunlight. Then they heat up like ovens. However, worst case, noise goes up a bit. They are no worse in this respect than any other black-bodied camera. Only by chance! Specific heat is generally given by mass. But since plastics are generally less dense than metals one would have to compare by volume in the context of metal v. plastic cameras. "dense" plastics have heat density of around 1.7 j/gK wheras metals are closer to 1. Magnesium's density is about 1.75 g cm^-3 whereas polycarb is about 1.2 g cm^-3. In the end, close to a wash. I'd expect, however, when taken out of sunlight for the metal camera to cool quicker because of the better conductivity (heat) of metal. It's germane to note than in home air exchangers the heat exchanger is made of plastic for many reasons. (Economy in material and manufacturing, very thin walls (conductivity), resistance to corrosion, etc.) We are not talking about transient heating but a situation where the temperature of the camera comes into equilibrium. The temperature of the camera will eventually be that of the inside of the car unless the camera is in the sun, in which case solar absorbtion and later reradiation will have to be taken into account. The color and the suface finish is the primary factor as far as radiation is concerned. It doesn't matter whether the camera is made of metal or plastic. It will get at least as hot as the inside of the car. a) It does matter because the plastic is thermally resistant (compared to metal), so even as it blackbody's away heat, that occurs at the surface. Heat inside the camera will have a slower go of reaching the surface to be radiated away. b) Rich brought up the direct sunlight case. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
The D50 still works | PeterN[_6_] | Digital Photography | 1 | August 8th 15 04:09 PM |
This actually works. | MSmith | 35mm Photo Equipment | 1 | March 14th 08 01:40 PM |
VR really works! | Roy Smith | Digital Photography | 11 | August 29th 06 06:08 PM |
It Really Works.. See what you think! | [email protected] | Photographing Nature | 0 | January 30th 06 05:46 AM |
It Works! | Mom's Biz | Film & Labs | 0 | November 6th 03 08:32 PM |