• Welcome to BirdForum, the internet's largest birding community with thousands of members from all over the world. The forums are dedicated to wild birds, birding, binoculars and equipment and all that goes with it.

    Please register for an account to take part in the discussions in the forum, post your pictures in the gallery and more.
Feel the intensity, not your equipment. Maximum image quality. Minimum weight. The new ZEISS SFL, up to 30% less weight than comparable competitors.

Typical Power for Digiscoping? (2 Viewers)

Passakorn

Active member
Hello there,

I am interested in digiscoping, especially for 4k video. Now I am using the sony a7iv with 200-600mm zoom. With 2 x extender I get about equivalent 1800mm with 4k 60p video (it has 1.5x crop factor). At many times I still feel the bird is too far as I cannot move closer and image quality starts to degrade greatly, as much as when I put M4/3 camera on a reflector telescope like a Celestron C6.

I ran across this youtube and I think image quality is very good for digiscoping video.


of course the image quality is far from super telephoto at close range. But is is very neat to get about eqv. 3500mm video rig which there is no telephoto can reach this distance.

I am wonderif what is a typical power the digiscoping is done, or what is an optimum power? I think 3500mm at 70x is for the extreme case. Let’s presume the atmospheric condition is good for doing this and do not pay a big factor for image quality for now.

I am trying to compare and choose the digiscope setup to the available portable regular camera/setup. Now the potential portable one is the new Fuji XH2 with 150-600mm lens. With 8K video it can reach about eqv. 1800mm or about 2560mm (50x) with 1.4x extender when cropping down from 8k to 4k. The setup will be less than 2.5kg which is very good for the reach.

I am mainly interested in long range 4k video for interesting bird beheavior at very far distance as I think the image quality for still photo doesn’t cut it compared to super telephoto.

Also do we gain extra reach (xx power) if we use smaller sensor such as m4/3 compared to a full frame camera? I am thinking about Swarovski digiscoping system.

Thank you very much for your suggestions.

Passakorn
 

horukuru

Here I Come !
Malaysia
Hello there,

I am interested in digiscoping, especially for 4k video. Now I am using the sony a7iv with 200-600mm zoom. With 2 x extender I get about equivalent 1800mm with 4k 60p video (it has 1.5x crop factor). At many times I still feel the bird is too far as I cannot move closer and image quality starts to degrade greatly, as much as when I put M4/3 camera on a reflector telescope like a Celestron C6.

I ran across this youtube and I think image quality is very good for digiscoping video.


of course the image quality is far from super telephoto at close range. But is is very neat to get about eqv. 3500mm video rig which there is no telephoto can reach this distance.

I am wonderif what is a typical power the digiscoping is done, or what is an optimum power? I think 3500mm at 70x is for the extreme case. Let’s presume the atmospheric condition is good for doing this and do not pay a big factor for image quality for now.

I am trying to compare and choose the digiscope setup to the available portable regular camera/setup. Now the potential portable one is the new Fuji XH2 with 150-600mm lens. With 8K video it can reach about eqv. 1800mm or about 2560mm (50x) with 1.4x extender when cropping down from 8k to 4k. The setup will be less than 2.5kg which is very good for the reach.

I am mainly interested in long range 4k video for interesting bird beheavior at very far distance as I think the image quality for still photo doesn’t cut it compared to super telephoto.

Also do we gain extra reach (xx power) if we use smaller sensor such as m4/3 compared to a full frame camera? I am thinking about Swarovski digiscoping system.

Thank you very much for your suggestions.

Passakorn

I will test soon the Sony A7IV with the Swarovski setup and let you know soon
 

horukuru

Here I Come !
Malaysia
I tested this morning the Swarovski Optik STX95 + TLS APO 30 + Sony A7IV, need to used the crop mode to removed the vignetting. Focus peaking helps a lot! Excellent combo by the way

You need the T2 ring for Sony to used the TLS APO adapter
 

Attachments

  • IMG20220918084349.jpg
    IMG20220918084349.jpg
    626.5 KB · Views: 7

Users who are viewing this thread

Top