12mm vs 16mm photo difference

12mm has an angle of 99 degree and the 16mm has a field of 82.6 ... is the 16~ degree make that much of a difference when doing astrophotography? Anyone have a comparison of a photo taken with a 12-24 and 16mm lens?

I don't for astrophotography, but I can assure you, the difference is quite large.

These are not from the lenses you mentioned, but do show you the difference between the two focal lengths. They are from my NX1 camera tests using the Sigma 12-24mm rectilinear lens. The center of both images is the same on the tripod mounted camera.

First at 16mm:


16mm

Second wider image at 12mm:


12mm

The lens EXIF is missing due to it being manual.

For perspective, I'm standing at my garden wall, which is 50' (16m) from the middle tree, which is about 100' (33m) tall.

I hope this helps.

Ed

EDIT:

FYI, here's 24mm:




24mm



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Wow thank you so much it's exactly the type of response I was hoping to get Ed thank you. While it does seem to be a good amount of difference I wonder if it would be worth it to drop a few hundred for the extra reach.

Dmpreciado said:

Wow thank you so much it's exactly the type of response I was hoping to get Ed thank you. While it does seem to be a good amount of difference I wonder if it would be worth it to drop a few hundred for the extra reach.

Click to expand...

You're welcome.

I'm having a similar discussion with myself, whether to drop a few hundred to get the even wider reach of the Rokinon 10mm. When I go wide, I go really wide, and I would actually need to get an 8mm rectilinear lens on the APS-C NX1 to match the wide angle the 12mm Sigma gives on my full frame Canons. The Rokinon 10mm would still be a compromise.

These images on my website use the full 122° wide power of the Sigma 12mm on full frame:

Example 1 Taken from close to the tree.

Example 2 In this example, the camera is on the ground at the base of the tree, pointing up.

Click on the images to enlarge them.

Ed

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Visit the Galleries in my website here:
http://edwardmichaellach.zenfolio.com/
Collections of images by individual cameras in chronological order can be found here:
http://edwardmichaellach.zenfolio.com/f585961546

Remember too, even when you’re talking about only a ‘few” degrees of difference, the increase in the field of view becomes more pronounce the further away the subject/scene is from the camera. The arc degree of difference at 1 meter may only be a few centimeters, but at a distance of stars, now you’re talking many millions, or billions of kilometers.

I have been agonizing over these two lenses for hours now. I really, really want the 12mm for interiors since that's my job, a real estate photographer, but I really, really want a better quality lens with the 2.8 for video. I feel like I'll kick myself either way. Does anyone have any interior comparison shots? I just have to know how much I'm going to lose with a difference of 4mm inside.

Jesuslovesme said:

I have been agonizing over these two lenses for hours now. I really, really want the 12mm for interiors since that's my job, a real estate photographer, but I really, really want a better quality lens with the 2.8 for video. I feel like I'll kick myself either way. Does anyone have any interior comparison shots? I just have to know how much I'm going to lose with a difference of 4mm inside.

Click to expand...

Samyang/Rokinon 12mm f/2. Sharp, fast wide lens as long as you are ok with manual focus.

Jesuslovesme said:

I have been agonizing over these two lenses for hours now. I really, really want the 12mm for interiors since that's my job, a real estate photographer, but I really, really want a better quality lens with the 2.8 for video. I feel like I'll kick myself either way. Does anyone have any interior comparison shots? I just have to know how much I'm going to lose with a difference of 4mm inside.

Click to expand...

It's not even close. 12mm is 18mm equiv. while 16mm is 24. The difference is huge in the wide end.

To put that in perspective, most good modern workhorse zooms start from 24mm (older ones were 28mm), for anything wider, you have go to Ultra Wide Zoom lenses.

Another thing to consider is that the 12-24mm is only 4f, but super-ultra sharp wide open.

The 12mm Samyang is an excellent, and very cheap choice. I went for the UWZ though.