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Optolong L-Pro clip filter EOS review

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#1 Star-Hunter

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Posted 17 May 2019 - 01:10 PM

Hi to all. I became the owner of the Optolong L-Pro filter and did some testing with DSLR camera.

This interesting filter perfectly preserves the balance of colors and reduces light pollution. It is suitable for shooting nebulae, and objects of stellar nature (galaxies, star clusters).

 

Full review: http://www.star-hunt...lip-eos-review/

Raw files: https://cloud.mail.r.../Kjfh/t4RBEL2VE

 

Equipment:

Samyang 135\2.0 ED Canon EF

Canon 550Da (with removed "blue glass")

Sky-Watcher Adventurer mount

Filters: Optolong L-Pro, Svbony CLS.

Location: Russia, Anapa, backyard.

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Edited by Star-Hunter, 17 May 2019 - 01:17 PM.

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#2 Star-Hunter

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Posted 17 May 2019 - 01:13 PM

Spectrum and location.

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  • LP.jpg

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#3 Star-Hunter

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Posted 02 June 2019 - 02:17 PM

Some tests of L-Pro and CLS filters.

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  • Optolong-L-Pro-vs-Svbony-CLS.jpg


#4 Star-Hunter

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Posted 02 June 2019 - 02:18 PM

Scorpio constellation:

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  • L-Pro-vs_CLS41.jpg


#5 Traveler

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Posted 02 June 2019 - 10:48 PM

Nice review. Can you talk a little about the processing (color balance tweaks) with the Svbony CLS? What steps are necessary?

 

To bad there seems to be no Nikon APS-C version...



#6 Star-Hunter

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Posted 03 June 2019 - 04:21 AM

Can you talk a little about the processing (color balance tweaks) with the Svbony CLS? What steps are necessary?

Oh, color balance with CLS filter it is problem for me. The green and blue channels are very similar, so in fact we get bicolor (H-alpha + OIII + H-beta). To get acceptable white balance, I use automatic color balance with Registax 6 or Fitstacker. Stars lose their color, but in the conditions of light pollution more important for me to get the nebula.



#7 tmarsala

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Posted 28 February 2020 - 06:09 PM

To your question, yes, it is very suitable for nebula and galaxies.  Some would argue not, and you may get better colors from a dark sky.  But with four hours of subs, here is what I got.  I am pleased with the optolong Lpro.  Once you align the RGB in post, it is very accurate in colors.

 

horsehead
M51
blackeyeopto

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#8 Alen K

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Posted 02 March 2020 - 11:16 AM

What would be an interesting comparison to me is if you took the three images in your initial post, did gradient reduction on all of them and set the resulting black levels the same, with no other modifications. That should show quite clearly the SNR and color differences, which are obscured by the large differences in overall sky glow.  We already know light-pollution filters can reduce background sky-glow: that is their reason for existing. It's the other effects that need closer examination. 

 

Btw, do you know what kind of street lighting is used in your location? In general, light-pollution filters depend on suppressing certain wavelengths from sodium and metal halide lamps. They don't do well against LED lighting, which is much more broadband in nature. That's what I have locally. My city is saving energy (presumably, if the number of lights or the overall illumination didn't go up as well) but has made it harder for me to image. 


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