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Forum: Pentax DSLR Discussion 10-06-2019, 10:37 AM  
ISO film to ISO digital
Posted By victormeldrew
Replies: 17
Views: 788
There is no direct equivalence between film grain and digital 'grain', which is not grain at all (because there is no silver halide involved) but digital noise. Different sensors handle differently when it comes to noise, so your K-1 sensor will give different noise characteristics to another camera with a different sensor.
Forum: Pentax News and Rumors 09-18-2019, 03:39 PM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By victormeldrew
Replies: 858
Views: 47,421
The Pixel 4 is rumoured to have an astro mode.....
Forum: Welcomes and Introductions 09-18-2019, 05:44 AM  
Af questions
Posted By victormeldrew
Replies: 41
Views: 1,249
Yes. This would be the first thing I would try. You need to do it with every AF lens before using it.
Forum: Pentax Film SLR Discussion 09-17-2019, 05:34 AM  
Stuck self timer lever
Posted By victormeldrew
Replies: 11
Views: 590
Neither is great, but WD40 is the worst.

If you can get isopropyl alcohol (rubbing alcohol) from your local chemist, that is the best option.
Forum: Pentax News and Rumors 09-17-2019, 05:27 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By victormeldrew
Replies: 858
Views: 47,421
2020 is divisible by 4, so yes it's a leap year.
Forum: Troubleshooting and Beginner Help 09-13-2019, 07:22 AM  
K50 shutter problem
Posted By victormeldrew
Replies: 14
Views: 711
The K-3 had an issue like this that was fixed (in the same way a wound is fixed by an elastoplast) by a firmware update. Is this camera up to date?
Forum: Pentax News and Rumors 09-13-2019, 07:20 AM  
"Ricoh/Pentax has no plans to announce a new camera this fall"
Posted By victormeldrew
Replies: 858
Views: 47,421
"Pentax has no plans" = "there is no official announcement"

Anybody publically announcing a release before an official announcement would be looking for a job right now.
Forum: General Photography 09-09-2019, 06:14 PM  
The worst of Craigslist/Shopgoodwill/eBay etc.
Posted By victormeldrew
Replies: 807
Views: 35,767
That 1:17 lens is gonna need some damn fast film.
Forum: General Photography 09-03-2019, 02:10 PM  
The worst of Craigslist/Shopgoodwill/eBay etc.
Posted By victormeldrew
Replies: 807
Views: 35,767
A 1st addition, no less.

Cameras that can do sums are EXTRA valuable.
Forum: General Photography 08-27-2019, 12:55 AM  
The worst of Craigslist/Shopgoodwill/eBay etc.
Posted By victormeldrew
Replies: 807
Views: 35,767
Damnit, I needed a back lens. Keep looking I guess....
Forum: Pentax Compact Cameras 08-24-2019, 03:23 PM  
GR III - Full snap with back button focusing
Posted By victormeldrew
Replies: 5
Views: 1,249
Exactly, you can still do back button AF, then shutter button AE, then shoot. Or do it all on the shutter button, but then AF and AE have to be on the same spot, but it's useful if you're handing it over to a novice.
Forum: Pentax Compact Cameras 08-22-2019, 11:24 AM  
GR III - Full snap with back button focusing
Posted By victormeldrew
Replies: 5
Views: 1,249
Yeah it doesn't work that way here unless there is a further setting I haven't found. I think he might mean that he can do snap focus with back button focusing enabled, rather than with the shutter button disabled... The manual doesn't mention it either way, except to say that focusing using the shutter button half-press is not available when it's disabled.
Forum: Pentax Compact Cameras 08-22-2019, 10:17 AM  
GR III - Full snap with back button focusing
Posted By victormeldrew
Replies: 5
Views: 1,249
Yes, this is how it works if you have disabled focusing on the shutter button. Leave it enabled, then if you focus with the back button it will ignore the half press of the shutter button or if you just use the shutter button it will focus as normal, including snap.
Forum: Pentax News and Rumors 08-21-2019, 03:44 AM  
Lensbaby no longer making Pentax mounts
Posted By victormeldrew
Replies: 139
Views: 8,053
Pentax isn't niche because it does things that nobody else does. It's niche because it is a high value proposition, with inconveniences to suffer. I think it's similar to phones...yes, you can buy an Apple or a Samsung or a Huawei or Google and everything will be very convenient...for a price. But get yourself a Doogee from China and you can get all of the same features for half the price - but if you want a case for it, or to use Google Pay, you'll suffer for your choice.


Lensbaby is niche because they offer 'out-there' products with a highly creative focus, that no other lens offers. I think that the people who want a system that does quality photography at the cheapest price are not the same people who are willing to drop $500 on a single-purpose bonkers lens that they might use for one project and then move on. Those people are not interested in saving a few hundred dollars, they just need a tool that will achieve their vision for the minimum of time and effort...and that is not Pentax. They want a big-three and be done with it - knowing that whatever they want to do, there will be a suitable tool available for their system, from stock, today.

The good news is that Pentax people still exist. I think that there are a lot more potential Pentax people out there with Canikon + Kit Lens combos round their neck that would be very happy with a Pentax and some change, if they had known it existed.
Forum: Ricoh GR 08-20-2019, 04:09 PM  
Build quality of GRIII - the problem of wobbly control dial
Posted By victormeldrew
Replies: 131
Views: 8,347
I would presume that, given qualified staff and good instructions, this repair is probably very easy. I'm sure that if there were any problems with the repair that they or Ricoh would make it right. But all of that was not acceptable to me - on a brand new unit, with new good units already on the way, I personally think Ricoh should replace them and repair the returns on their own time.
Forum: Ricoh GR 08-20-2019, 03:27 PM  
Build quality of GRIII - the problem of wobbly control dial
Posted By victormeldrew
Replies: 131
Views: 8,347
The camera itself, yes. It is amazing.


I am extremely disappointed with Ricoh's performance so far on the Image Sync app. For me at least, it's still not functional. It took 3 months to release any support for the GRIII and only last week did they release the full functionality with remote control. But even now, on Android 9 and iOS its reliability is patchy at best and I cannot connect at all on my Pixel 3A. But if you intend on transferring files to a computer the 'old' way, then it isn't a problem.

---------- Post added 08-20-19 at 03:37 PM ----------



The company (John Pye Technical) is new to electronics repair, having up until recently been just an aution house (John Pye Auctions selling cars, antiques, and used tech), before purchasing a shed and employing a handful of technicians, presumably to repair the iphones and such that they sell on their site.


I could find precisely zero mention online of them having repaired anything either successully or otherwise. I just googled them again and stlll the only result that mentions the name John Pye Technical is the Ricoh Service page. I have no reaon not to trust them, but equally no reason to trust them with my brand new eye-wateringly expensive camera.
Forum: Ricoh GR 08-20-2019, 03:17 PM  
Build quality of GRIII - the problem of wobbly control dial
Posted By victormeldrew
Replies: 131
Views: 8,347
Not really, some were more bothered than others. I was not particularly bothered by the problem itself (I didn't even notice it until it was pointed out) but worried that the issue may get worse in the future. I also was concerned about the local repair centre that Ricoh nominated here, and their ability to do the job well, quickly (the estimate was 7-10 days which is bad enough) and without causing any further problems. So I elected to return the item for a refund and purchase one from outside the problem range.


If it was the choice between a significant discount or a non-wobbly unit, I would happily put up with the issue for some cash back in my pocket. But both being full price, and one option involving sending off my new camera for a couple of weeks, the choice was easy.


Anyway, my recommendation is to ask them if they have a unit outside the problem range, and if so buy that one.
Forum: Ricoh GR 08-20-2019, 09:55 AM  
GR III - photos from owners
Posted By victormeldrew
Replies: 438
Views: 28,289
How did you manage to get flare? I have so far completely failed!
Forum: Pentax News and Rumors 08-20-2019, 09:52 AM  
Lensbaby no longer making Pentax mounts
Posted By victormeldrew
Replies: 139
Views: 8,053
Maybe not this brand in particular, although they are far from the toys people think they are, they obviously aren't every photographer's cup of tea, certainly not Pentax photographers.

But every time a photographer looks at a lens that they've seen in a magazine, or in a blog, or advert, they drop down the 'available in' drop down and they see:

Nikon
Canon
Sony
Fuji
Olympus

Then they think, what about a flash, I like the look of that fancy TTL unit, or trigger system I saw...look at the 'supports' list:

Nikon
Canon
Sony
Fuji
Olympus
Pentax*
*manual control only



What about that fancy post-processing software with the tethered shooting I probably don't need but think I might want:

Nikon
Canon
Sony
Fuji
Olympus
Pentax*
*some or most features not supported

What about that remote control with the intervalometer on fleabay? What about that waterproof housing? What about that third party grip? That L bracket? The answer is always the same. After a while, they start to think there's one brand I should definitely avoid if I want any of this cool stuff I keep seeing in my favourite magazines and blogs. In fact, they would be forgiven for not knowing that Pentax even exists. I subscribe to The British Journal of Photograpy and B&W Magazine...90%+ of the stuff they review, use and recommend is not available for Pentax, the only recent exception being the K-1, which they loved apart from the fact that the 3rd party support is woeful and the current native lens selection is tiny, forcing you to buy aging lenses second hand to get what you want.

Unless you want a body, a couple of very 'straight', standard native lenses and a native flash, Pentax is not a fun system to buy into. That setup definitely appeals to some people, but to turn that into lots of people, you need to be in most or all of those support lists, magazines, blogs and videos so that at least the brand is visible to people who want to do more than take lovely sharp images of their kids, flowers and sunsets. Anybody with even the slightest artistic and creative intentions will be put off.

So no, Lensbaby by themselves is not having a huge effect on the existing fans of Pentax here. But they are (yet) another mark in the 'cons' column for people who have their mind open to buying into an ILC system and that can only be bad news.
Forum: Ricoh GR 08-14-2019, 02:51 PM  
Image Sync update: Remote, Bluetooth and more with GR III
Posted By victormeldrew
Replies: 9
Views: 1,642
It's not just the bluetooth, the wifi function is also very unreliable. Just before I made my earlier post I corrected the permissions issue, connected to the camera and used the functions successfully. Hooray I thought, I'll play with that tomorrow. This has happened on one or two occasions before.


Next day, it won't connect again. I've hunted high and low for solutions. I've deleted all data and reinstalled the app, connected manually outside the app, tried the bluetooth function, tried every combination of wifi settings, nothing. The phone says the wifi is connected, but the app doesn't recognise it and just sits with the spinny wheel forever. According to reviews, Android 9 seems to be the problem version, although my Pixel 3A is absolutely stock unadulterated fully up-to-date Android, so I doubt very much it's the OS that's at fault - especially since my $10 Chinese smart lightbulb came with a companion app that can connect P2P wifi on my phone without issue.


I can only wait and see what the next version will bring. The camera will be 6 months old by then......that's a seriously long wait for a working companion app.
Forum: General Photography 08-14-2019, 03:38 AM  
Does greater sensor "real estate" equate to better image quality?
Posted By victormeldrew
Replies: 107
Views: 4,030
Putting aside the engine, a Ferrari would match a Honda for speed. Since SNR is the biggest benefit of greater pixel size, putting it aside is meaningless.


SNR does not just affect those scenarios, but all scenarios. For very small pixel pitches, a good exposure will involve counting a small number of photons. That means that quantum granularity becomes very real. A handful of photons either way (due to noise, or chaos) will make a significant difference to the measured light level, whereas on a large pixel they would be overwhelmed by the true signal. This means greater fidelity at all light levels and ISOs. It has a similar effect to bit depth in this regard. Yes, it is more noticeable when raising the noise floor, but not exclusive to it.
Forum: General Photography 08-13-2019, 03:11 PM  
Does greater sensor "real estate" equate to better image quality?
Posted By victormeldrew
Replies: 107
Views: 4,030
The biggest problem with the whole discussion and the idea of testing it, it this (from my earlier post):


Unfortunately, it is impossible for all other factors to be equal in the the real world. Even if you had two sensors with the same number of pixels, built in exactly the same way, just in different sizes, the knock on effects of that different geometry affect numerous other factors which also have an impact on image quality. Isolating the effect of the sensor while excluding all others is impossible.
Forum: General Photography 08-13-2019, 09:57 AM  
Does greater sensor "real estate" equate to better image quality?
Posted By victormeldrew
Replies: 107
Views: 4,030
No, because there are two things that are important:

1) Resolution (number of pixels) - more is always better within reason, but impacts on file size and therefore processing overheads. Unfortunately this is what most people think is the one and only measure of sensor 'quality', which is why 20+ MP on a tiny phone sensor seems like a good thing to put in your sales brochure, but alongside that what matters is:


2) SNR (signal to noise ratio) - bigger pixels gather more light, so the effect of sensor noise is reduced in proportion to the signal. This is good, but means a bigger device.


Really what is best is an enormous sensor with kabillions of pixels. But the practicalities of carrying it and the requisite lenses around mean that it's only really good if you're a space telescope. The result is a trade-off between pixel size, resolution and portability.
Forum: Ricoh GR 08-13-2019, 03:26 AM  
Image Sync update: Remote, Bluetooth and more with GR III
Posted By victormeldrew
Replies: 9
Views: 1,642
I was about to have a moan that I still could not connect to the camera on my Pixel 3A - it was getting perpetually stuck on the 'connecting' screen since the previous version was released.


However while I was fiddling with it, I found the problem. As I went to clear cache and data ready to reinstall the app, I accidentally tapped 'permissions' and found that even though I agreed to the permissions when I installed the app, they were switched off in app settings. I switched them on and it now works.

Obviously not ideal that the app doesn't recognise that problem and prompt you to switch them on. But at least it's working now.

---------- Post added 08-13-19 at 03:34 AM ----------



I think most high-end phones do. Far from being dead, that's what I use every day to pay in shops using google pay. It's what makes contactless payments work.
Forum: Pentax News and Rumors 08-12-2019, 03:17 PM  
Lensbaby no longer making Pentax mounts
Posted By victormeldrew
Replies: 139
Views: 8,053
Keeping a separate line of inventory is expensive. Separate production runs cost significant time and money to set up and tool for. Even small things like needing an additional shelf in the warehouse for each lens model, maintaining websites, support staff training, spares, it all adds up. Fairly small costs for a run of 10k units, but unsustainable for runs of 100s. Especially if it takes a couple of years to shift them.
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