Comments on: Simplifying Hyperfocal Settings for the Kamlan 15mm f2.0 Lens Using an AI Agent/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/Sat, 18 Jan 2025 11:08:15 +0000hourly1http://wordpress.com/By: Bushcrafter/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3530Sat, 18 Jan 2025 11:08:15 +0000/?p=18126#comment-3530In reply to valiantlydreamland00f573e7a6.

Hi Greg,
great choice with Google Gemini!
I completely understand your explanation and agree with you on this point: if you’re aiming for the best sharpness, top-quality results, or need large prints, you’ll inevitably end up looking at higher apertures when considering the DOF (Depth of Field) scale of a lens to achieve broad and optimal sharpness.

That said, the CoC (Circle of Confusion) used by ChatGPT isn’t incorrect. Most sites, including Wikipedia and even apps for calculating hyperfocal distance, use 0.015 for APS-C and MFT sensors and 0.029 for full-frame sensors. The reasoning is straightforward, after all, it’s called the “Circle of Confusion” for a reason. In other words, it’s about determining whether something is sharp enough or not, often referred to as the “limit of acceptable sharpness.”

So yes, I agree with you, using f/14 with a hyperfocal distance of 2 meters would provide better overall sharpness. However, I’ll be using this lens for video, where the output is displayed on computer or phone screens and the subjects won’t ever be static. In this case, even when shooting photos at HD resolution, no one will be scrutinizing the sharpness at such high levels.
Additionally, apertures like f/14 or f/16 aren’t particularly practical for my intended use.

So, I’ll likely push the boundaries of acceptable sharpness, but perfection isn’t what I’m aiming for 🙂
Thank you for your comment, and I hope you’ll continue visiting Open Source Photography.
Wishing you all the best,
Kind regards,
Marc

Like

]]>By: valiantlydreamland00f573e7a6/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3529Sat, 18 Jan 2025 05:41:43 +0000/?p=18126#comment-3529Yes, I use AI (in my case Google Gemini) for many questions. But this one is a good example of where things go wrong. ChatGPT has assumed a circle of confusion of 15 μm, which is appropriate for “full frame”, but too large for μFT. You need about 8 μm there (about 2.5 pixels on a 20 MP sensor).

I’ve spent some time working out these things, and I have written a depth-of-field calculator (I’m not the only one): http://www.lemis.com/grog/src/dof.c. For this depth of field you really need f/14 and a focus distance (hyperfocal distance) of 2 m.

Liked by 1 person

]]>By: Joke/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3528Fri, 17 Jan 2025 21:07:43 +0000/?p=18126#comment-3528In reply to Bushcrafter.

Ik hou mijn hart vast

Liked by 1 person

]]>By: Ted Jennings - TPJ Photography/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3527Fri, 17 Jan 2025 18:05:32 +0000/?p=18126#comment-3527 ]]>In reply to Bushcrafter.

It really is that good😁😁

Liked by 1 person

]]>By: Bushcrafter/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3526Fri, 17 Jan 2025 17:09:57 +0000/?p=18126#comment-3526In reply to Joke.

Ja, en het gaat nog veel sneller gaan – er is een nieuwe ontwikkeling, en die gaat vermoed ik nog veel veranderen. Fijn weekend.

Liked by 1 person

]]>By: Bushcrafter/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3525Fri, 17 Jan 2025 17:07:19 +0000/?p=18126#comment-3525In reply to Ted Jennings – TPJ Photography.

I’m not quite sure how to respond to this—it’s more credit than I deserve. Thank you, Ted!

Liked by 1 person

]]>By: Joke/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3524Fri, 17 Jan 2025 15:03:17 +0000/?p=18126#comment-3524Ik gebruik het ook voor dergelijke zaken, problemen oplossen met mijn camera, recepten, een rondreis opstellen. Ongelooflijk. Soms krijg ik wel schrik om niet meer mee te kunnen. Het gaat momenteel in een vliegend tempo.

Liked by 1 person

]]>By: Ted Jennings - TPJ Photography/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3523Fri, 17 Jan 2025 13:15:48 +0000/?p=18126#comment-3523OK, I’m impressed. In this case the article itself. Great content, details, and explanations. Submit it, as is, to a local magazine and watch it become viral. Congrats, out did yourself.

Liked by 1 person

]]>By: Bushcrafter/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3522Fri, 17 Jan 2025 10:50:38 +0000/?p=18126#comment-3522Hey Willy, ja inderdaad, veel sneller dan we eerder hebben meegemaakt – het zal dan ook veel belangrijker zijn om deze keer min of meer bij te blijven, want het gaat ons hele leven veranderen. Bedankt Willy en heb nog een hele fijne dag vandaag !

Like

]]>By: willyfotoblog/2025/01/17/simplifying-hyperfocal-settings-for-the-kamlan-15mm-f2-0-lens-using-an-ai-agent/comment-page-1/#comment-3521Fri, 17 Jan 2025 10:41:46 +0000/?p=18126#comment-3521“stay in control” dat kan je wel stellen Marc

maar de technieken veranderen wel bijzonder snel

groeten

Like

]]>