NocPix Nite D70R

[1894]

Looking with interest at the forthcoming NocPix Nite D70R release and anticipating the slew of Alpex in the classifieds

However I see it will have a 70mm F2 lense which got me thinking about its light gathering.

Here’s what AI said about 70mm F2 vs 50mm F1.2

The 50mm f1.2 lens gathers significantly more light than the 70mm f2 lens because its f/1.2 aperture is much wider than the f/2 aperture, allowing more light to reach the camera sensor

So why the extra bulk of a poorer 70mm lense or is AI talking rubbish?

 

[j200esy]

I will be waiting a few months to hopefully have true user review ,
But so hard to get an honest review these days,
As some many YouTubers are looking for sponsors and also don’t want to sound negative,
As they think big companies will avoid them, if they show any items in a bad light.

Will wait and see.

 

[jackblack56]

It'll depend on the sensor size. If the Nocpix has a physically larger sensor size then it could collect more total light, even at f2.

 

[Eric the Red]

Gotta love AI. Always depends on asking the right question. As jackblack has said, the NocPix does have a larger sensor. Significantly more light.... hmmmm - consider how much bigger the aperture actually is between the two lenses.
Finally - it's not just light - it's also depth of field. When you say poorer lens - not sure what you mean.

I'd read this as NocPic feeling that they can have a (slightly) smaller aperture with a greater depth of field (read that as less need to focus), projected onto a larger sensor, capable of capturing more light. I somehow doubt the optics experts have this wrong on the light journey presentation on the display screen together with reticle click size etc. As you say, let's wait and see.

On AI - I give you this from the other day:

 

[Blackwood Outdoors]

It'll depend on the sensor size. If the Nocpix has a physically larger sensor size then it could collect more total light, even at f2.

Hello Jack, its the pixel size that affects light gathering. As an example a 1080P pixel is neigh on x4 the size of a 4K sensor pixel, lower resolution means higher sensor sensitivity . Also this relates to aperture also , so the two work in tandem to provide sensitivity, larger aperture provides increased light transmission. Depth of field has no relation to sensitivity although it is related to apertures in the sense a smaller aperture provides a greater depth of field...

 

[Blackwood Outdoors]

Looking with interest at the forthcoming NocPix Nite D70R release and anticipating the slew of Alpex in the classifieds

However I see it will have a 70mm F2 lense which got me thinking about its light gathering.

Here’s what AI said about 70mm F2 vs 50mm F1.2

The 50mm f1.2 lens gathers significantly more light than the 70mm f2 lens because its f/1.2 aperture is much wider than the f/2 aperture, allowing more light to reach the camera sensor

So why the extra bulk of a poorer 70mm lense or is AI talking rubbish?

Its not extra bulk... looking across the internet people get confused by all this a lot. Basically if they used a 70mm lens and F1.2 the lenses would be huge in weight and size. To reduce this, they use higher F stop lens , which maintains the 70mm focal length but reduces overall size and weight, this reduces sensitivity somewhat. Daytime zero difference at nightime and slight difference at night can be negated by using good IR illumination .

 

[1894]

Thank you and interesting.

 

[palo]

We will just have to wait and see but i would imagine nocpix would of done their homework on this before releasing this scope.

 

[jackblack56]

Hello Jack, its the pixel size that affects light gathering. As an example a 1080P pixel is neigh on x4 the size of a 4K sensor pixel, lower resolution means higher sensor sensitivity . Also this relates to aperture also , so the two work in tandem to provide sensitivity, larger aperture provides increased light transmission. Depth of field has no relation to sensitivity although it is related to apertures in the sense a smaller aperture provides a greater depth of field...

Hi Ian, by sensor size I meant the physical size of the sensor in mm, not the resolution

For example the Alpex with it's 50mm f/1.2 lens on the 3840×2160 sensor should admit more light — about 2.78× more light (≈1.47 stops) than the 70mm f/2 lens on the 3536×3536 Nocpix sensor - IF the sensors happened to be the same physical size in mm.

I would assume that Nocpix have negated this by adding a physically larger sensor to gather more total light to get the edge over the Alpex.

 

[Blackwood Outdoors]

As far as I know there all 1 1/8" sensors..

 

[Eric the Red]

Hi Ian, by sensor size I meant the physical size of the sensor in mm, not the resolution

For example the Alpex with it's 50mm f/1.2 lens on the 3840×2160 sensor should admit more light — about 2.78× more light (≈1.47 stops) than the 70mm f/2 lens on the 3536×3536 Nocpix sensor - IF the sensors happened to be the same physical size in mm.

I would assume that Nocpix have negated this by adding a physically larger sensor to gather more total light to get the edge over the Alpex.

Please run me the math on 2.78x "more light" and 1.47 f-stops?

This feels like a repeat argument on whether a 34mm tube admits more light than a 30mm tube

 

[jackblack56]

Please run me the math on 2.78x "more light" and 1.47 f-stops?

This feels like a repeat argument on whether a 34mm tube admits more light than a 30mm tube

....you did say "please"

 

[Blackwood Outdoors]

You can also use this as a guide.

Night Vision Scope Performance Calculator

Compare night vision scopes with our Scope Comparison Calculator. Instantly see sensitivity, aperture, and field-of-view difference in scopes.

www.blackwoodoutdoors.co.uk

 

[HDShark]

What height of rings would this generally need?

 

[patrickt]

Hello Jack, its the pixel size that affects light gathering. As an example a 1080P pixel is neigh on x4 the size of a 4K sensor pixel, lower resolution means higher sensor sensitivity . Also this relates to aperture also , so the two work in tandem to provide sensitivity, larger aperture provides increased light transmission. Depth of field has no relation to sensitivity although it is related to apertures in the sense a smaller aperture provides a greater depth of field...

still waiting for a reply of over 4 weeks from you regarding ordering one of these, so I have gone elsewhere!!

 

[Blackwood Outdoors]

still waiting for a reply of over 4 weeks from you regarding ordering one of these, so I have gone elsewhere!!

No idea who you are? What you asked, etc... we deal with dozens of messages every day.. Enlighten me ?

Hope your happy with it anyway, now your sorted

 

[jackblack56]

@Blackwood Outdoors I pre-ordered one off you Ian - any ETA on stock?

 

[Blackwood Outdoors]

@Blackwood Outdoors I pre-ordered one off you Ian - any ETA on stock?

Hello Jack

I'm told 1st week of November at some point. There shipping any day from China..

 

[Tom Highway]

It would be good if the first takers for these scopes can give some honest feedback on them, especially in comaprison with the Alpex etc. Am thinking about upgrading the scope on my .22WMR, at first was going to get an Aplex lite, but perhaps now thinking of getting the nocpix and sticking that on my .223 foxing rig, and putting the Alpex 4k LRF on that onto the .22WMR, but only if the Nocpix offered signficant advantage over the Alpex.

 

[foxshooter69]

I’ve had an email saying delivery now expected middle of November