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Sony NEX5 for digiscoping

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Old Sunday 5th December 2010, 22:18   #51
mmdnje
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I should add that the price for ther rokkor lens is between 15-20 dollars (not bad!)
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Old Thursday 9th December 2010, 14:36   #52
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Originally Posted by mmdnje View Post
each type of camera has its pros and cons. I love the simplicity of PS cameras and when the light is low and the shutter speed is <1/50sec, I use a sony W130.
Mmdnje, First compliments for the beautiful shots. From what I read above the PS camera is more light sensitive in this set up. Is that because the sensor is a lot bigger on the NEX-5 and so needs more light? Thinking about it the more glass the lenses of the NEX have will not help behind the scope as the scope will be limiting in the amount of light. Is your Rokkor lens chosen with that in mind?
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Old Friday 10th December 2010, 02:19   #53
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I got the Rokkor because I thought it will be cheap enough to try even if it did not work. Roughly, to achieve the similar speed obtained with the Point and Shoot camera at ISO100, I need to go to ISO 800 with NEX (and other dslr). I've tried a sony alpha and canon 350d before.
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Old Monday 13th December 2010, 10:35   #54
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Could I ask a simple question please? Can I simply add a tube via a 49mm thread so I can plug on to my scope lens?

I can make the tube to suit.

Den
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Old Monday 13th December 2010, 14:06   #55
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What? Your question is far too brief. Exactly what kind of scope do you have? A 1 1/4 focuser, a 1 1/2 inch focuser, Dob., refractor, folded optical Cat or Mak, etc.

What kind of photo mode do you wish to do, prime focus or A-focal (digiscope) ? I have done both and get much better results with A-focal. What kind of camera do you have?

No matter what you do, YOU must hand hold the camera in place to see if it is possible to get an image and to find out what spacings you need. No point in buying or fabricating something and then find out you need to extend the back focus of your scope, for example.

I digiscope the moon through a 10 inch Dob, birds through an 80ED Orion OTA, and snow crystals through a Lomo Plan microscope objective. Exactly the same FH1 camera and attached Baader eyepiece. Yes, we can help. Gene
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Old Monday 13th December 2010, 14:56   #56
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Sorry Gene, I should have made it clear I was asking in relation to the Sony NEX5. I have since found that I can attach via a 49mm thread. The Tube I can make in any size or length I need.

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Old Monday 13th December 2010, 15:26   #57
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Right, Den. I overlooked the heading. Just be sure you can get an image hand holding before you do any work. Gene
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Old Thursday 3rd February 2011, 17:45   #58
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I now got a Sony NEX VG10 (same chip and mostly same software as NEX5). I also have a Nikon to NEX adapter (Novoflex). I tested this with the Swarovski STS 80HD and the Swarovski TLS-800 mm Digiscoping adapter with a Nikon T-adapter. There is no vignetting with this combination and it is sharper than my Nikon D200, time to upgrade that one! I wish though that the NEX cameras could be set to spot metering, a lot of background light influences the exposure.
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Old Friday 4th February 2011, 10:43   #59
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on the other hand is very easy to adjust the histogram with live-view...
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Old Saturday 5th February 2011, 17:08   #60
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I now found the spot metering mode in the setup (under brightness...) and this really makes a difference! I think I will go next week and buy a NEX5 (they are on sale here in Calgary right now), as the form factor is much better for digiscoping.
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Old Friday 18th February 2011, 20:01   #61
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Hi ,
What do you think of all this?
Sony NEX-5 Digiscoping with Kowa TSN-884
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Old Monday 28th March 2011, 18:47   #62
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Since all were using manual focus (zizo88 didn't include more info), I purchased a NEX5 to use with the Nikon FSA-L2 http://www.pt-ducks.com/cr-telescopes.htm#Nikon_FSA-L2 in my Optolyth 100 http://www.pt-ducks.com/duck/t1a.JPG. It works well (2 first photos) but I prefer to use it in the TMB92 with a Siebert PMW (0-2.5x) and a BS 1.5x barlow since images seem to result better (last 2 photos), but I have to do more tests.
I love the 7fps brush and was one of the main reasons why I bought it (the main others were price and size).
I hope that Sony or a third producer will release a fixed lens good for real digiscopy since like that I will have a 3rd good option...

With this camera I can be photographing and resighting marked birds at the same time!!!
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Old Monday 28th March 2011, 21:43   #63
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David, can you post some of your TMB92 images here in the astro scope forum gallery? I'm sure there's some in there (including me) that would like to see more of these and here more about your scope and set-up.

Cheers,
Paul.
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Old Monday 28th March 2011, 23:57   #64
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Originally Posted by zizo88 View Post
Hi ,
What do you think of all this?
Sony NEX-5 Digiscoping with Kowa TSN-884
Looks promising but the image you posted was too small to see much detail. Can you crop the bird to about 800x600
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Old Tuesday 29th March 2011, 00:00   #65
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Since all were using manual focus (zizo88 didn't include more info), I purchased a NEX5 to use with the Nikon FSA-L2 http://www.pt-ducks.com/cr-telescopes.htm#Nikon_FSA-L2 in my Optolyth 100 http://www.pt-ducks.com/duck/t1a.JPG. It works well (2 first photos) but I prefer to use it in the TMB92 with a Siebert PMW (0-2.5x) and a BS 1.5x barlow since images seem to result better (last 2 photos), but I have to do more tests.
I love the 7fps brush and was one of the main reasons why I bought it (the main others were price and size).
I hope that Sony or a third producer will release a fixed lens good for real digiscopy since like that I will have a 3rd good option...

With this camera I can be photographing and resighting marked birds at the same time!!!
David,
The third/fourth image look good, especially the third .
Neil
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Old Saturday 2nd April 2011, 19:17   #66
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7 fps

Just to show what 7 fps can allow - photos aren't pin sharp/focused but shows the action. With 4 fps this wouldn't be possible...

Paul I will post it when I will have a photo of it - my wife is using the compact camera...
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Last edited by DRodrigues : Saturday 2nd April 2011 at 19:20.
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Old Sunday 29th May 2011, 03:57   #67
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Just to show what 7 fps can allow - photos aren't pin sharp/focused but shows the action. With 4 fps this wouldn't be possible...

Paul I will post it when I will have a photo of it - my wife is using the compact camera...
Nice sequence David. I like to be able to catch this sort of action too. With more and more cameras coming out with CMOS sensors we will have even faster frame rates to play with.
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Old Sunday 29th May 2011, 04:06   #68
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On my recent Florida trip I had the Sony Nex 5 and the kit zoom lens ( 18-55/3.5-5.6 ). With normal eyepieces there is too much vignetting with this zoom but with the Kowa VA3 ( Video Adapter ) with it's 60 mm of Eye Relief there is not a problem.
Neil

Sony Nex 5 plus Kowa lens/scope Prominar and Kowa VA3 adapter and DA adapter ( 49 - 52 mm adapter ring )

Florida, USA.
May 2011
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Old Sunday 29th May 2011, 17:56   #69
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Kowa lens/scope Prominar

Neil,

I have not been able to find a price or a dealer that sells the Kowa lens/scope Prominar.

Can you direct me to one.

Thanks

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Old Monday 30th May 2011, 02:32   #70
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Neil,
More one great photo.
With adapter rings the zoom might suffer. Just found the link where zizo88 found the info http://sonyalphanex.blogspot.com/201...-kowa-tsn.html. Unfortunately I don't know Japanese, so couldn't found the adaptor. Any one can help?
Eventually a 40-42mm plossel would work well also. I used a Vixen NLV40 for the night-herons at more than 200m. Eventually the TS SuperView 40mm would allow a wider unvignetted zoom range since the camera objective can be closer to the eyepiece lens. I have the 32mm version but has less eyerelief
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Old Monday 30th May 2011, 02:52   #71
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Now the photo of the Night-heron...
I was waiting for a 30-35mm lens fixed E-mount to test it on the 32mm TS SS. As you used the rings I tested it also with rings - vignetting only disappears at >45mm. Enclose a photo at 18mm and another at 55mm, with the TS32SS on the Opotyth100.
Hope a digiscopy friendly E-mount lens will exit soon!
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Old Monday 30th May 2011, 15:38   #72
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Birder,
Contact Jim Danzenbaker
Sales Manager for the Americas
Kowa Sports Optics
310-722-3333
[email protected]
www.kowa-usa.com

Neil


Quote:
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Neil,

I have not been able to find a price or a dealer that sells the Kowa lens/scope Prominar.

Can you direct me to one.

Thanks

Birder100
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Old Monday 30th May 2011, 16:28   #73
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Hi ,
What do you think of all this?
Sony NEX-5 Digiscoping with Kowa TSN-884
What is your set up you are using with your KOWA... I can see Sony NEX5 but what lens, adapter etc... jim
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Old Monday 30th May 2011, 18:50   #74
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Kowa lens/scope Prominar

Thanks Neil,

I have e-mailed Jim and await his reply.

The lens appears to be in a limited release among
a select few.

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Old Saturday 11th June 2011, 13:32   #75
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Good lens for digiscopy

I already saw some info before but now is official. A good lens for digiscopy will be available at the end of the year http://www.dpreview.com/news/1106/11...nye30macro.asp
Meanwhile I continue to use the NEX5 with the TMB92+PMW+BS combo when need to take photos. The included photo was taken at more than 90m and the title is "Are you looking to me?!?"
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