Sony A700 IR Performance

Rashkae · 14th October 2007

I'll be putting the A700 through some IR tests to see how it performs. I'll post the results here. I just hope the weather cooperates. :P

rOnGrEn · 14th October 2007

Originally Posted by Rashkae

I'll be putting the A700 through some IR tests to see how it performs. I'll post the results here. I just hope the weather cooperates. :P

thanx! Looking forward to it.. Kindly test with as many lens you have as possible..

Hopefully the A700 wont have hotspot problems..

airforce1 · 15th October 2007

Ya-- How the result. Awaiting for the photo.

Rashkae · 16th October 2007

Was only able to take one shot thanks to the rain, but so far it seems a lot like the A100 - not too bad for IR.

I'll do more tests and post results ASAP

rOnGrEn · 10th November 2007

any updates Rashkae??

I did my own impromptu "snapshot test" and found that IR light is very much blocked for the a700... the same scene, same aperture (f/4.5) and same iso (iso400) took 2.5 seconds on the KM5d, and but 13 seconds on the a700!!

Both using kit lens, hot spots wise, a700 is much better than the 5d... And comparing lens, kit lens produced less hot spots than Tamron 17-50mm.

rOnGrEn · 10th November 2007

I am still quite a noob to IR.. So don't know how to PP correctly.. just ran it through a downloaded Action. Here are the photos for comparison:

1. KM5D + kit lens

2. A700 + kit lens

3. A700 + Tamron 17-50mm

rOnGrEn · 10th November 2007

As the hotspots are in the middle, the scene above (in pic 1 2 3) might not be so good to judge whether there is hotspot..because different parts of the scene have different brightness..

So I took a picture of a more "average" scene.. can actually see the "gradient" in tone.. but note that this time, the focal length is 70mm. Thus the effect of hotspots might be different.
4. A700 + kit lens

Heres A700 + kit lens at 18mm again. So is there hotspots problem? the photos for A700 were all shot at f/4.5, and hotspots tend to be more obvious at smaller apertures. But stopping down on the a700 would mean a terribly long exposure.. -_-"""
5. A700 + kit lens

Looks quite acceptable to me. Just wondering how come the leaves turn out red for all the a700 pictures.. haha.. What else do I need to do for the PP?

14th October 2007	#1
Rashkae Senior Member Join Date: Nov 2005 Posts: 8,302	Sony A700 IR Performance I'll be putting the A700 through some IR tests to see how it performs. I'll post the results here. I just hope the weather cooperates. :P

15th October 2007	#3
airforce1 Senior Member Join Date: Aug 2003 Posts: 2,143	Re: Sony A700 IR Performance Ya-- How the result. Awaiting for the photo. __________________ http://www.flickr.com/photos/airforce1 Think of concepts and work towards it.

16th October 2007	#4
Rashkae Senior Member Join Date: Nov 2005 Posts: 8,302	Re: Sony A700 IR Performance Was only able to take one shot thanks to the rain, but so far it seems a lot like the A100 - not too bad for IR. I'll do more tests and post results ASAP

10th November 2007	#5
rOnGrEn Member Join Date: Jan 2005 Location: Hougang Posts: 1,481	Re: Sony A700 IR Performance any updates Rashkae?? I did my own impromptu "snapshot test" and found that IR light is very much blocked for the a700... the same scene, same aperture (f/4.5) and same iso (iso400) took 2.5 seconds on the KM5d, and but 13 seconds on the a700!! Both using kit lens, hot spots wise, a700 is much better than the 5d... And comparing lens, kit lens produced less hot spots than Tamron 17-50mm.

10th November 2007	#6
rOnGrEn Member Join Date: Jan 2005 Location: Hougang Posts: 1,481	Re: Sony A700 IR Performance I am still quite a noob to IR.. So don't know how to PP correctly.. just ran it through a downloaded Action. Here are the photos for comparison: 1. KM5D + kit lens 2. A700 + kit lens 3. A700 + Tamron 17-50mm Last edited by rOnGrEn; 10th November 2007 at 12:46 PM.

10th November 2007	#7
rOnGrEn Member Join Date: Jan 2005 Location: Hougang Posts: 1,481	Re: Sony A700 IR Performance As the hotspots are in the middle, the scene above (in pic 1 2 3) might not be so good to judge whether there is hotspot..because different parts of the scene have different brightness.. So I took a picture of a more "average" scene.. can actually see the "gradient" in tone.. but note that this time, the focal length is 70mm. Thus the effect of hotspots might be different. 4. A700 + kit lens Heres A700 + kit lens at 18mm again. So is there hotspots problem? the photos for A700 were all shot at f/4.5, and hotspots tend to be more obvious at smaller apertures. But stopping down on the a700 would mean a terribly long exposure.. -_-""" 5. A700 + kit lens Looks quite acceptable to me. Just wondering how come the leaves turn out red for all the a700 pictures.. haha.. What else do I need to do for the PP? Last edited by rOnGrEn; 10th November 2007 at 12:59 PM.