Test of cheap HS1010A light meter from ebay.
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- čas přidán 30. 01. 2015
- When I decided I needed a light meter I went on ebay to see what was on offer. There were a few different types ranging from less than £10 ($16) to professional units at over £1000 ($1600).
Since I only really needed a unit to compare light levels between different sources I chose to buy a couple of cheap ones to compare them.
A man with a watch knows what time it is. A man with two watches is never sure.
The man with one watch only thinks he know what time it could be.
Brian Deschene what does a watch to do with lux meters??????????
What does a man with no watch know?
@@hardusvd its called a parable
John Coops you must be fun at parties :)
Thanks, I was having trouble understanding the poorly translated written instructions. You video explained what I needed to know.
Not sure if it has been mentioned, but the reason for the multi point sampling feature is to test the output of LCD backlights. You can test in the same sections on the monitor such as all four corners and the center (or more yet) for backlight intensity levels.
The more even the better.
I love your channel, I truly appreciate you making all of these videos for us! I enjoy watching your videos more than any others on CZcams.
I have a xindar dp10in1 digital multimeter that besides all the traditional volts ohms amps.... it also has tempreture, relative humidity, sound pressure level and LUX METER. I compared the xindar dp10in1 reading with the HS101A (the red one) and both reading are exactly the same.
It could be that both are fairly accurate but the red one may be more sensitive to directional light than ambient light, due to the black lip around the translucent white dome. If they were calibrated to deal with ambient light the red one would measure more with your overhead lamps shining onto them.
is it possible to measure the luminescence ? and achieve ITU-R BT.500-11 specifications? if so please reply to me
thx a lot for the walkthrue and demonstrating the features, topnudge +1
took the plunge on the red one, and arrived today, seems to work as you descriped, and yep, doesnt cost much shipped going for under 10buck, ewen thow i gave 11USD.
Did you come any conclusoin closer here years later, of accuracy amongst these or are familiar with any review there test accuracy on the red model.
racking my brain during the whole video trying to think who you sounded like Big Clive..Robin Williams in Mrs Doubtfire:) thanks for the vid. I once made a light meter using an Arduino and a LDR. Like you say, they show a trend but it comes down to calibration..if they didn't correctly calibrate the thing then it will show the wrong value. But it would be interesting to compare against a more expensive , correctly calibrated unit. To show how much its out by..if the cheap unit is constantly out by a certain percentage on all readings..then it could still be pretty useful.
The sensor is probably a BPW34. The blue filter gives it the same response af the human eye.
Thank you for the video. Been looking for a UV meter that is not incredibly expensive, but accuracy is very important to me. Looks like I just might have to dish out the cash for the trusted accuracy I am after, bummer.
hey Clive...they're stuffing digital tachometers in both those style of cases now...they look identical except the corded piece....would maybe make an interesting guts comparison video and a digital tach tear down vid
Hèhèhè 1:12 (I'm going to make that sound into a ringtone for me to use!)
Now seriously: I just need one to compare light. It just needs to show if it becomes more or if it stays the same. Can I do that with a cheap one? Thanks if you take the time to comment on my question :)
Dairenji Tix made my day man hahahah
do you not have one built in to your phone?
How can you translate lux into a photographic solution, i.e. Shutter speed, etc?
You have to calcuate the ExposureValue the formula is EV=log^(Lux/2.5)
Than you take the Exposure Value and look up the Shutterspeed/Aperture Combinations
Or you use the sunny16 rule, but i would printout a small lookup table.
I built a photographic lightmeter with a lux sensor, its on my channel.
@bugleader be careful those values are rounded a LOT, those are not the actual values.
Im in need of a really good uvb meter for reading uva and uvb any suggestions? don't want to spend more than £125 if i can help it.
+andrew moon I've not tried any of the UV meters. So I'm afraid I can't say if any are good or not.
Did you ever find out which one was more accurate? I have the LX10 and I would be pretty pissed off if it is inaccurate.
+I HATE TRAFFIC WARDENS! No. I'd have to buy a really expensive pro unit to get a reference. I use them purely for a rough comparison or to monitor changes in intensity over time using the same meter in the same position.
I have played with jewel thief circuits and used to have an LED connected to a DVM for comparison tests,very useful little gadget.
The LED was inserted into a short length of black sleeving which was itself pushed over the LED under test, the DVM readout would give a really useful comparison.
I'm more interested in your Fluke meter. :)
maybe try at various wavelengths
is it good for photography flash ?
@@johncoops6897 sure you can use them you just have to be fit in photography.
you can caculate EVs from Lux and with the Exposure Value you get the Time/Aperture Combinatios.
Lux = (2^Ev )*2.5
so
Ev = log(Ev*0,4)
voila ...
edit: ok sorry you cant use it for flash, overread that. but for permanent light in photography aka a "normal" photographic light meter
@@johncoops6897 yeah but you kinda can, you just have to print out a lookup table and glue it to the back of the meter.
I was thinking about doing this but they are too big for my taste, so i built one, take a look i finished building it yesterday its on my channel :)
John Coops while the chopstick comparison is funny and obsolence of light meters when using modern cameras is true, i use a bronica ETRSi and Hasselblad 500C/M as walkaround cameras, both dont have built in light meters.
Also i only use ambience light metering, so for a lot of people it does make sense.
A cheap lux-meter is 10 bucks on amazon vs 200bucks for a new digital sekonic, so if you wanna buy cheap printing out a lookup table is worth the 190$ price difference :)
but tastes are different :)
the table for handheld aka under 1/60 of a second can be as small as this : ibb.co/yFFkkqT
+bigclivedotcom swap the sensors and see if they give the same readings.
Couldn't use you a few bulbs that actually show their lux output and see which meter was generally closest to the ratings. Obviously this wouldn't work with cheap bulbs, but at least in the US, it seems like bulbs are required to list their output, at least in lumens. There are ways to convert between the two that should be at least somewhat helpful in determining which is more accurate: www.ledrise.com/shop_content.php?coID=19
You spent over $100 pounds including the shipping? Dude these are $16 dollars in the USA free shipping.
Please don't buy this meter. I did, function and buttons are just fine...but the meter is COMPLETLY unaccurate. I have been measuring 23% difference compared to a reference meter (Hagner EC1)
23% higher or lower ? Any way to find a suitable reference for 1000 lux ?
Test MAX44009 :) with arduino.
You don't have to buy any of this crap, inside your cell phone there is already a sensor. Just download one app and you have the same accuracy with much better options like graphical history, correction factor adjustment etc. Doesn't cost you anything at all.
maybe they sell these to trick people into thinking they bought high quality LEDs in their shitty ali-express dump shops
so what can we take away from this? Absolutely NOTHING! THANKS for waisting my time.
+Leon Taylor Did you mean wasting your time? Clive has simply given you his opinion on these devices and you should appreciate that.
Leon Taylor I learned what the buttons do, I lost the docs that came with mine. The HS1010 is sensitive enough to reveal light falloff at the edges of my 35mm enlarger.