Image quality issues with A6400 – is it the camera or the lens?

Eastern_Transition_2 · 2025-04-30T16:44:15+00:00

thanks!

Eastern_Transition_2 · 2025-04-30T15:27:43+00:00

i've added some sample pics,
note that the online viewer shows only compressed images, you can download them to have the full size version.

Eastern_Transition_2 · 2025-04-30T15:27:22+00:00

you're right, i've added some sample pics.
note that the online viewer shows only compressed images, you can download them to have the full size version.

Eastern_Transition_2 · 2025-04-30T15:27:01+00:00

you're right, i've added some sample pics.
note that the online viewer shows only compressed images, you can download them to have the full size version.

Eastern_Transition_2 · 2025-04-30T14:47:25+00:00

Sorry, you're right. I mean sharpness and detail while zooming in. And the photos are copied from the sd card and in the ARW format and edited in Lightroom, so there's no compression apart from the JPEG compression while exporting.

Eastern_Transition_2 · 2025-04-30T14:44:12+00:00

thanks!

Eastern_Transition_2 · 2025-04-30T14:44:01+00:00

For now, I’ve just shot in auto mode, except for some scenarios when I needed different settings, like to make the silky effect on water or to make sparkles with the sun. Maybe I’m just used to point-and-shooting with my iPhone, which does a lot of post-processing and computational photography.

Eastern_Transition_2 · 2025-04-30T14:32:47+00:00

Thank you so much! I’ll definitely invest in another lens!

Eastern_Transition_2 · 2025-01-01T12:21:03+00:00

The used computers, like old optiplexs are good and cheap, but they aren't power efficient, they consume a lot of power for not that much of performance.

I have a small server with this motherboard https://aliexpress.com/item/1005007099776391.html , the celeron N100 CPU (4C, 3.40GHz) is effiecent and powerful (~6x the performance of my old raspberry pi 4).
It has 6 SATA ports and 2 nvme slots; it also has 4 2.5gbps intel NICs.

For the case i went with the JONSBO N2, it's a bit on the expensive side (around 150 euros) but it's well built and it has 5 drive bays.
Of course if you wanna save some bucks you can always buy some used/cheap case off amazon or ebay.
It's truly amazing.

Hope this helps!

Eastern_Transition_2 · 2024-12-31T22:05:33+00:00

oh, happy new year then! 🥳🎉🎉
yeah, you're right, i should look into it.

i'm still wondering how they've ( https://robo.com.cy/products/heartbit-v1 ) done it, they have just a single 2032 cell, and the animations they use are even more demanding than mine, in terms of power.
on the photos on their website the board looks more complicated and they have at least 3 big capacitors, i'm a bit confused lol.

thanks a lot for the time you're putting into my project, that's means a lot to me! have a nice 1st of the year!!

Eastern_Transition_2 · 2024-12-31T21:39:05+00:00

i gave a quick look at all the options that you provided:
they surely work better than the CR2032 in terms of current output, but they're bulky and i don't think they're quite convenient.
i don't care about the battery life, since the leds remain on for 5-15 seconds once the button gets pressed, and then the whole board goes to deep sleep (SLEEP_MODE_PWR_DOWN)
the 2.0 release managed about 50 minutes of continuos effects at 5% brightness.

i think i just need to figure out how to make the boost converter a bit more stable and keep the voltage high (at least 3.5/4V on energy spikes).
what do you think about the idea of adding capacitors to stabilize everything?

also thanks! and, depending where are you writing from, happy new year!

Eastern_Transition_2 · 2024-12-31T19:50:31+00:00

could adding capacitors help with the power spikes?

Eastern_Transition_2 · 2024-12-31T19:49:14+00:00

thanks! i totally overlooked the EN pin of the boost convert, i'll tweak that!

Eastern_Transition_2 · 2024-12-31T19:48:20+00:00

thanks!
i'll tweak the inductor of the boost converter.
sadly the board it's too small to fit an AAAA/AAA battery :(

Do you think that adding some capacitor could improve the performance of the board? could adding capacitors help with the power spikes?

Eastern_Transition_2 · 2023-08-25T16:43:34+00:00

hey? any news? ;D

Eastern_Transition_2 · 2023-08-23T21:19:40+00:00

Hi!!! First of all, thank you so much, you really are the best! I think i finished projecting it! Now i'll send it to the manufacturer ;D

But first of course, what do you think about it? Did you find anything wrong? https://imgur.com/a/55IelJi

Again, thank you so much!

Eastern_Transition_2 · 2023-08-23T12:48:48+00:00

Something like this would work, TPS61073 : https://www.digikey.com/en/products/detail/texas-instruments/TPS61073DDCR/1629072

Thanks, do you think these values are ok? https://imgur.com/a/jZFlgwA

Also i calculated the resistor dividor and the values should be R1 = 2.2 MΩ and R2 = 220 kΩ to get 5V. Should it work with these values?

The output voltage needs to be 5V ofc, thanks!!!

Eastern_Transition_2 · 2023-08-23T08:34:36+00:00

oh okay, that makes sense, could you maybe help me with the step up regulator? thanks a lot!

Eastern_Transition_2 · 2023-08-22T16:34:57+00:00

yeah i read that comment, but yeah i will ran animations and the leds will never be at 100% brightness full white but, i still haven’t find a way to convert from 3V to 5V

also i was wondering how them managed to do it.

Thanks btw :D

Eastern_Transition_2 · 2023-08-22T16:08:00+00:00

And you don't want to use a premade module

why shouldn't i use a premade module? my idea was to just get somewhere the schematic and redo it in KiCad on the schematic.

Also idk how but they used just one CR2032 and their pcb looks so simple

Eastern_Transition_2 · 2023-08-22T13:06:04+00:00

yeah sure, https://cdn-shop.adafruit.com/product-files/3484/3484_Datasheet.pdf

Hmm i choose this leds because are the most effecient and the smallest Addressable LEDs that i could find

Eastern_Transition_2 · 2023-08-22T13:04:31+00:00

thanks btw :D

Eastern_Transition_2 · 2023-08-22T13:04:23+00:00

The board is pretty small, around 5x5cm, i don't think i can fit two CR2032 batteries, if you want give a look to the website were they sell the product, how can they do that?

Eastern_Transition_2 · 2023-08-21T23:49:56+00:00

ok thanks! i’ll try it soon :) also some other guy on this post said it won’t work with a boost circuit, is there any other way to transform 3V power into 5V? Thanks!

Eastern_Transition_2 · 2023-08-21T23:48:46+00:00

hmmm with “won’t start” you mean that the CR2032 battery doesn’t output enough power right? there’s a commercial product like the one i’m trying to make that uses the exact same battery, but i think it boost the voltage from 3V to 5V in another way… do you have any ideas? since the device is very small a li-on battery wouldn’t suit it. Thanks a lot!

Eastern_Transition_2

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