Digital noise when digiscoping

[Neilos]

Hi,

I have just started digiscoping using leica 77 apo and the samsung nv10.

When taking photos the images have noise when viewing the photo at 100% (10mp) - but as you zoom out the noise is not apparent which is fine as I don't need the image to be at 100%, but would be nice to get rid if the noise if possible.

The question is: do other cameras suffer with noise at 100% views of the photos? or am I using a camarea tha has too many megapixels or other deficiencies of the camera (i.e the censor cannot cope?)?

Neilos

[delia todd]

Hi Neil I see this is your first post, so may I welcome you on behalf of the Staff and Moderators at Bird Forum

Can you upload a photo on this thread so that we can see the problem?

I'm sure there will be some members along soon to give you some expert advice

D

[john-henry]

Hi,

I have just started digiscoping using leica 77 apo and the samsung nv10.

When taking photos the images have noise when viewing the photo at 100% (10mp) - but as you zoom out the noise is not apparent which is fine as I don't need the image to be at 100%, but would be nice to get rid if the noise if possible.

The question is: do other cameras suffer with noise at 100% views of the photos? or am I using a camarea tha has too many megapixels or other deficiencies of the camera (i.e the censor cannot cope?)?

Neilos

Hi Neil,
Sorry no-ones answered your post yet. Many cameras give noise problems. Two ways to overcome, or lessen, the problem is to use as low an ISO as possible but still give a reasonable shutter speed or shoot away and reduce the noise with noise reduction software.
'Neat Image' or 'Picture Cooler' are free software programs that work quite well for this, I haven't got links to these handy but you can put in a search for them on the forum or with a search engine.

Regards

John

[iporali]

The question is: do other cameras suffer with noise at 100% views of the photos? or am I using a camarea tha has too many megapixels or other deficiencies of the camera (i.e the censor cannot cope?)?


Neilos,

I hope I don't sound offending but I would say that 10 Mpix is too much for any pocket-sized camera: small "photosites" of such sensor can't be physically very sensitive and have a good dynamic range. This increases tendency for noise. Also in many P&S cameras the optics are not able to deliver all 10Mpix worth of details. But that seems to be what the manufacturers sell and what the customers buy (don't know which came first).

Having said that there are also very different "strategies" in how different cameras handle noise. Some leave more noise visible (like your Samsung and my old CP4500), some use in-camera processing to smooth-out the noise at the cost of details (like my Panasonic FX01) - and then there are the Fuji F10/11/30/31... with a special honey-comb sensor that somehow seems to offer high sensitivity/low noise AND good details. Of course Fuji's strategy is the easiest for a photographer, but if you use noise removal software it is actually better to have "grainy" noise (with details) rather than smoothed-out watercolour-look (with lost details). But as you said the noise does not necessarily become a problem except in heavily cropped pics or in large prints.

Best regards, :t:

Ilkka

[Paul Jarvis]

I agree with both the above. But would add 8 megpix is about the most max usable for best results and instead of shooting in super fine try something less like fine or normal that should help with shutter speeds as well and allow the sensor to record enough detail.

Hope that makes sense to everyone.

[Neilos]

Hi thanks for the feedback - I have had trouble posting an example image, but I'm sure you know what I am describing.

I find using software is not the best at reducing noise as it also takes other detail also.

I'm keen to find a camera combination that does not have the noise impact at source when taking the photo with the scope any suggestions?

Also what do people sugest is the best way to resize the photo so it viewed at a level when noise is not apperant?

thanks for the input.
Neilos