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Forum: Pentax K-1 & K-1 II 15 Hours Ago  
Most used lens for Landscapes?
Posted By Ian Stuart Forsyth
Replies: 32
Views: 1,050
With Pentax I did like the sigma 24 1.8 and the older 16-50 sdm along with the sigma 10-20

Some of the lenses I would like to have to seen for pentax is the Tokina 16-28 2.8 for a lot of landscape that did not require shooting into the sun the lens performed well and, in some situations, better than the Tarmon 15-30'

Another that I like is the Sigma 35 1.4 and also the sigma 24 1.4 (it is a shame that the 24 is not available for pentax)
Most current 50 mm primes are another sure bet I like the Nikon 50 1.8 G as it is cheap and work well
Forum: Pentax K-3 III 08-28-2022, 10:39 PM  
K3III owner, and now I've bought a D500 too. So....
Posted By Ian Stuart Forsyth
Replies: 88
Views: 6,975
Again group AF acts as single large AF sensors point and give priority to the closest object with no scene recognition



The only setting that uses recognition is Auto


the camera will only act as a single AF point giving priority to the closest object so yes with will not recognize and focus on the foreground


If you are using group AF the camera will surely focus on the nearest object regardless on what you want the camera to focus on

This can be great if you are photographing BIF and focusing on the eye may be less critical but you run the risk of again focusing on the nearest target that fall under that group say a wing tip or branch

You also have to be careful that your AF settings can be stored based on the orientation on the camera in ether portrait or landscape, you may have it set to single for portrait and AF-C with 25 DR for landscape

---------- Post added 08-28-2022 at 11:00 PM ----------



I have never had this problem with the D800 D810 D4 and the D5 I was playing with

I before sunrise EV1.9
https://photos.smugmug.com/Photogallery-current/i-m8czqGQ/0/c9ccb1e4/X2/012_4673%20crb_1-X2.jpg

F4 iso 2000 1/5 sed

I should still have a video of ether the D5 or D4 shooting a night around EV -3 I would look at seeing if you are having problems with your D500 even the D7500 should be
Forum: Pentax K-3 III 08-23-2022, 09:33 PM  
K3III owner, and now I've bought a D500 too. So....
Posted By Ian Stuart Forsyth
Replies: 88
Views: 6,975
Group AF acts as one large AF point with the priority given to the face



Subject recognition for can be found in Auto area AF this is the only setting that uses the cameras AF to detect and select the subject

Here I made a videos made sometime ago with the D4 set to Auto area AF and letting the camera select the AF points it has no problem with selecting the correct AF points in a dark bathroom
This is done in light that I would not want to use or even save the files if it was for wildlife photography
















Youtu.be








Here with some light added
















Youtu.be





I look to see if I still have the raw files to post, It should not be any harder for the D500 to obtain the same results as I have done with the D4 as it is a much more robust AF





You have to remember that Dynamic that you have to place the main AF point over what you want to track
Forum: Pentax K-3 III 08-20-2022, 12:56 AM  
K3III owner, and now I've bought a D500 too. So....
Posted By Ian Stuart Forsyth
Replies: 88
Views: 6,975
If you are using Dynamic 25, Dynamic 72 ,Dynamic 153 there is no subject recognition happening, One of the way to tell if there is no subject recognition is that there is a main AF point highlighted with a cluster of 25, 72 and 153 points displayed around them. the reason why you see the main AF point highlighted is an aid for you to place that AF point over the area that you want the camera to track. If you want the D500 to track a subject the eye you must first place that under the highlighted AF Point

Page 103



There is no scene or subject recognition, you must first tell the camera what you want to track by placing the subject under the main highlighted AF point and then as described above the camera will track the object around the number of AF points you have selected
Forum: Photographic Industry and Professionals 07-20-2022, 10:26 PM  
Nikon ceases all further DSLR development
Posted By Ian Stuart Forsyth
Replies: 227
Views: 7,141
Lets have a real look at 2017
sales down 26%
Operating income down 39%
ILC down 23%
Lens down 22%

And what has happened during a pandemic
Imaging Operating income up 99% 25Byen to 50Byen
Imaging Operating profit up 17B yen

Over one of the hardest times in recent years they restructured and made the company profitable in the downturn This does not sound like blood spurting out to me but rather well structured planning

Lets have a look at some other numbers Most investment sites and look at some numbers



Quick Ratio cash on hand vs. short-term debts and expenses and shows the ability of a company to pay its current and short-term future bills. Higher numbers are better.

Fujifilm: 2.16

Olympus: 1.56

Canon: 1.48

Nikon: 1.44

Ricoh (i.e. Pentax): 1.28

Panasonic: 1.06

Sony: .71

Toshiba: .66

Current Ratio Similar to quick ratio, but not as stringent; it includes a company's current inventory, along with cash, on the asset side of the ratio. Again, it's a rough guide to a company's ability to pay its current and near-term bills. Higher numbers are better.

Fujifilm: 2.73

Nikon: 2.1

Canon: 2.03

Olympus: 2.01

Ricoh (i.e. Pentax): 1.54

Panasonic: 1.41

Toshiba: .88

Sony: .83

Long-term debt to (shareholder's) equity Higher the number the more riskier and more debt the company has taken on

Fujifilm: 11.2%

Nikon: 22.5%

Canon: 22.7%

Sony: 27.3%

Olympus: 50.1%

Panasonic: 60%

Ricoh (i.e. Pentax): 61%

Toshiba: 253%

I don't see spurts of blood
Forum: Photographic Industry and Professionals 07-20-2022, 09:04 PM  
Nikon ceases all further DSLR development
Posted By Ian Stuart Forsyth
Replies: 227
Views: 7,141
If we look at last year to this year Nikon sold just under 7,000 more cameras per month over a year with a non existent DSLR releases and more ML being offered

And when we look at lens sales that is over 14,000 more lenses per month being sold this year over last year
Forum: Digital Processing, Software, and Printing 07-07-2022, 10:24 PM  
DxO PhotoLab 5
Posted By Ian Stuart Forsyth
Replies: 10
Views: 726
This is pretty much my process but using 16 tiff in Prophoto RGB

There are times that I do like ACR for some conversions so I export them as DNG from DXO with only lens correction and NR applied
Forum: Digital Processing, Software, and Printing 07-02-2022, 11:28 PM  
Discussion of PEF vs DNG and raw files moved from News and Rumours thread
Posted By Ian Stuart Forsyth
Replies: 62
Views: 1,215
I am one of the unfortunate users of another camera company that does not give you the option of using DNG as a output option. When selecting a DNG as an output from the camera it gives you the best flexibility, running 3 to 4 different software's there is no need to continually paying for the updates or subscriptions to use newer versions, there is also no need to convert files to DNG from the raw file created by the camera eveytime I want to use the camera that is not supported by the software in raw converting or other camera tools.

The main point of the thread was about using PEF or DNG and not really about converting PEF to DNG, when you have the option of using the camera with DNG as a output option it really gives you the best of most worlds. No data loss (with many times an easier access to more data and easier manipulation of data for storage in the DNG file its self) greater flexibility across raw conversion, other applications for image processing procedures and finally the reliance on developers release of profiles that can take months after release of a cameras model
Forum: Canon, Nikon, Sony, and Other Camera Brands 07-01-2022, 11:23 PM  
Fuji or Canon for Action?
Posted By Ian Stuart Forsyth
Replies: 82
Views: 1,968
What you are looking for is focus trap you first want to set menu a2 to Focus then setup a8 to AF-ON only

Now you should be able to press the shutter and it should work like catch in focus you can also use a cable release button and lock the shutter to act as a remote camera
I even think with the D500 you can select AF-C with the same setups this option should allow you to select a group of AF points rather than relying on a single AF point

Focus-Trap Shooting on the D500 and D850

---------- Post added 07-01-2022 at 11:26 PM ----------



Other than using CIF to setup the camera as a trail cam I have not liked using CIF and definitely not for macro
Forum: Lens Clubs 07-01-2022, 10:16 PM  
300mm plus Lens Club: discuss your long lenses
Posted By Ian Stuart Forsyth
Replies: 38,746
Views: 4,095,113
Hairy Woodpecker



Forum: Lens Clubs 07-01-2022, 08:09 PM  
300mm plus Lens Club: discuss your long lenses
Posted By Ian Stuart Forsyth
Replies: 38,746
Views: 4,095,113
thank you
Forum: Digital Processing, Software, and Printing 07-01-2022, 06:43 PM  
Discussion of PEF vs DNG and raw files moved from News and Rumours thread
Posted By Ian Stuart Forsyth
Replies: 62
Views: 1,215
No it creates ICC and DCP file but in order to build those files it first needs a file containing an image of a target created taken by a camera so that it can be opened in its software and guess what that file format needs to be ?
After taking an image of a colorchecker target the only way to open that raw file in X-rite has to be converted into a DNG raw format for the software read and open and then build you a DCP ICC color profile that then can be loaded into anyone of a number of raw converters.



Notice as to how it X-rite software needs to be in the DNG format and that it has to converted ( saved as DNG)

And again here



Creating DNG Profiles for Adobe Camera Raw

And again to state it for x-rite software to open the raw file of the target you just shot needs to be in a DNG file format for it to read and open so that you can create color profile of the colorchecker target your camera produced

I don't think you are following what is being discussed here , Yes any raw converter does not need the raw file to be a DNG file so that a DCP or ICC colorprofile can be applied to the raw and converted into a color image.
What is needed if you are creating a colorprofile DCP or ICC using adobe profile editor software or X-rite profile editor software the image used to create the profile has to be in the DNG file format

---------- Post added 07-01-2022 at 06:49 PM ----------



Basically yes, for the raw converter to convert the data in the raw file into a working colorspace it needs to know what those values in the raw file represent and how they are to be converted With DXO you can also import your own custom made color profiles ( DCP ICC) further down in the vary same tab,
Forum: Digital Processing, Software, and Printing 07-01-2022, 01:47 AM  
Discussion of PEF vs DNG and raw files moved from News and Rumours thread
Posted By Ian Stuart Forsyth
Replies: 62
Views: 1,215
Of the major software that I use to create colorprofiles only accept DNG





---------- Post added 07-01-2022 at 01:52 AM ----------



Has nothing to do with this, it is about building DCP and ICC profiles and of the 2 well know require DNG files



I am not saying that raw converters and the use of DCP ICC files have a problem dealing with other raw formats, It is the software that is creating the DCP ICC files that are then load into your raw converters

---------- Post added 07-01-2022 at 01:54 AM ----------



Just as they say you can use custom DCP or ICC profiles but it is the software that build these color profiles that use DNG files

---------- Post added 07-01-2022 at 02:03 AM ----------

Now there are ways around this to build profiles on is using raw digger to build data points that then can be used in software like free Argyll and DCamProf

but this can be time consuming and really is not geared towards building profiles for pleasing color production or matching that pleasing color from one camera to another

---------- Post added 07-01-2022 at 02:13 AM ----------



Uniwb is used so that one can depict or neutralize the multiplies used to create a white balance from the recorded image, this is so that we have a raw histogram as to how the 3 color channels are accurately being recorded.



here no WB is being applied to the file and gives you a representation as to how the image was recorded within the raw file, depending on the model of camera these multipliers are different

Here is what a Uniwb looks like and is used in understanding what color channels are really being clipped, what is being clipped by the software in the raw converter, color space and even the color profile selected in the conversion.

Forum: Digital Processing, Software, and Printing 06-30-2022, 11:00 PM  
Discussion of PEF vs DNG and raw files moved from News and Rumours thread
Posted By Ian Stuart Forsyth
Replies: 62
Views: 1,215
One of the reason as to why I prefer DNG is that many software that create color profiles are only compatible with DNG, so anytime you are going to color calibrate you first must select DNG or for manufactures that do not have DNG as a raw you will always have to convert your raw.*** to a DNG file.

There is also other useful information that is found in the DNG file format one is the as shot neutral this tell you the multipliers used by the camera for WB this can be useful for calculating UniWB
Forum: Canon, Nikon, Sony, and Other Camera Brands 06-29-2022, 08:47 PM  
Fuji or Canon for Action?
Posted By Ian Stuart Forsyth
Replies: 82
Views: 1,968
Testing the sigma 159-600 sport against the Nikor 200-500 they are pretty even in AF, the nikor was better when dealing with things at the closer end while the sport was better at further away tracking

When testing the sport against my $8000 nikon 200-400 II F4 sure the nikon was better ( much better for AF ) but from the standpoint of IQ and sharpness it really took the best conditions to see the differences

---------- Post added 06-29-2022 at 08:55 PM ----------



There are times that I will use MF mostly for extreme macro work



How and what I used to take this photo MF was the only option



This was handheld and focused on the droplet



Again just handheld

---------- Post added 06-29-2022 at 09:07 PM ----------



For myself I like to use FF from macro both with the D800 and D4 series cameras my go to is the nikon 60mm 2.8 that works really well with extension tubes the down side is that you have really short working distances ( but I kind of like that as it give a unique perspective to the images) and the second is the sigma 150 2.8 and also using the 1.4 TC from sigma. The sigma 150 gives you better working distance and when the tc is used gives you some more working distances.

100mm was something I felt like going with but there really was not that much of a difference over the 60mm. Tamron also has a 150mm AF lens ( I dont know much about it but people seem to like it that use it).

Macro is tricky when it comes to getting your field of view and magnification. If I want a FOV of 35mm on a cropped body the only way to get the increased magnification that a cropped body gives you, you have to get closer over what a FF will give you when using a 50mm or 60mm lens, when you shoot at the same working distance you get the same magnification.
Forum: Canon, Nikon, Sony, and Other Camera Brands 06-28-2022, 08:40 PM  
Fuji or Canon for Action?
Posted By Ian Stuart Forsyth
Replies: 82
Views: 1,968
You cannot go wrong with the D500, while I have briefly played with the D500 with the nikon 200-400 F4 and the sigma 150-600 sport there is much improvement over the earlier D800, D810 ,D4, and D4s with regard to AF performance.

Areas that the D500 excel at is a much better AF sensor along with more customizable setting to further enhance the ability to track subjects. I know from years of use with the D800, D810 and the D4 when setup it is really easy to just hand off the AF to the camera and it has a nearly 90% hit rate and when I say 90% if I have set the camera to AF on the eye or head of the bird that it is what the camera has focused on and only happy if it focused on that.

Very useful features you should look at with the D500 is 3D AF this is where you place the AF point over what you want the camera to focus on and then once selected it follow that subject to a T as it move around the frame.

While I would say that the sigma sport is not the best for AF performance if you look at the Nikon lineup however it is adequate for most situations, I know with the D4 and the D810 there was a much better improvement with the lens over the D800. While I am not able to photograph a car traveling at 100kmp and expect it to have AF performance of nailing that car at 7- 10 meters at a FL of 300mm head on every time, it can hold its own for about everything else.

With macro 99% of my work is all done using AF and relying on the AF to predicting my movement handheld for get the shot, with no need for a tripod or rail


---------- Post added 06-28-2022 at 08:42 PM ----------



I think that the Bokeh from the 150-600 sport is better at 600 while the 60-600 at 600 is a little bit sharper
Forum: Canon, Nikon, Sony, and Other Camera Brands 06-26-2022, 08:58 PM  
The Auto, the Jpg and The Dunning-Kruger Effect
Posted By Ian Stuart Forsyth
Replies: 57
Views: 3,074
The very simple and basic reason why I most of the time I use raw and keep raw files is this
















Youtu.be




The wire frame is the Adobe srgb container and all of the color data points that fall outside of the wire frame is data that cannot be stored within that container. This video only represents the colors found in the limited color selection in a Color Checker SG target
















Youtu.be




Here is an image that I was able to print and all the data points of color was able to be printed with my rather older printer. All of the colors found outside of the wireframe is what is lost in the cameras jepg container
Forum: Lens Clubs 06-25-2022, 08:45 PM  
300mm plus Lens Club: discuss your long lenses
Posted By Ian Stuart Forsyth
Replies: 38,746
Views: 4,095,113
A few of a Great Grey taken last year











---------- Post added 06-25-2022 at 08:49 PM ----------



A hard bird to photograph Nice job
Forum: Pentax News and Rumors 06-24-2022, 08:07 PM  
New firmware for K3 III and K-1 introduced season specific shooting modes
Posted By Ian Stuart Forsyth
Replies: 114
Views: 10,336
Profiles are the first setup as to how the image will look, if profiles are not that important then one should be able to select any profile say vivid profile and simply make adjustments in DCU or the camera's settings and make the image appear the same as if portrait profile in the camera or DCU had processed the image. This is why creating the first step the profile cannot be just mimicked. there is a reason as to why a person would first select the profile of camera and then make adjustments to the other settings in the camera. One of the major is how colors are going to be produced, how light or dark that color would be processed in relation to the other colors in the image.

This also includes matching profiles that if one of my cameras is used I then can produce the very same look as if was taken with a different camera with a different sensor manufacturer, when shooting jpeg so I can hand off work directly off the people that are using my work without issues with how colors appear from those different cameras
Forum: Pentax News and Rumors 06-23-2022, 11:35 PM  
New firmware for K3 III and K-1 introduced season specific shooting modes
Posted By Ian Stuart Forsyth
Replies: 114
Views: 10,336
Are you able to adjust curves among other things or are you limited to selecting just profiles in the camera like vivid , natural or portrait along with saturation, contrast



Here I have control over more than just the sliders found in the camera



Other things that can be created in custom profiles are files that more closely resemble how the camera records information within the raw file very useful for ETTR

On the left is the custom profile created to reflect how the raw file was recorded. this also shows in the histogram of the camera a more realistic representation of what a raw histogram would look like and when compared to what a raw histogram really looks like as seen on the right
Forum: General Photography 06-23-2022, 03:51 PM  
Bokeh..just a load of balls?
Posted By Ian Stuart Forsyth
Replies: 128
Views: 5,314
Many would be surprised as to how much thought goes into the background in the OOF areas to aid in the total appearance and the composition of the final image. In wildlife photography simply shifting to the left or right a few cm can change how that image will appear. For me selecting the OOF area can and is all most as important as the subject you are photographing :)
Forum: Pentax News and Rumors 06-23-2022, 02:04 PM  
New firmware for K3 III and K-1 introduced season specific shooting modes
Posted By Ian Stuart Forsyth
Replies: 114
Views: 10,336
It would be nice to create your own favorites from the aid of a profiled system to then upload that preset into the cameras OOC JPEGS engine. It would also be nice for WB control when you are setting up the look of your image in difficult light temps
Forum: Troubleshooting and Beginner Help 06-21-2022, 11:58 PM  
Aluminium case for long term storage?
Posted By Ian Stuart Forsyth
Replies: 14
Views: 811
What I have started to use is Kaizen foam, more and more of the time I see this being used for shipping lenses and electronic equipment and at this time I have not noticed it degrading. Just for fun I placed a piece on the dashboard of a parked car in the sun for over a year and have not seen anything breaking down. I also is really easy to wipe out, clean, dry and is dust free
Forum: Lens Clubs 06-19-2022, 10:05 PM  
300mm plus Lens Club: discuss your long lenses
Posted By Ian Stuart Forsyth
Replies: 38,746
Views: 4,095,113
A Wilson's Snipe photographed in the morning light





Forum: Pentax SLR Lens Discussion 06-19-2022, 07:36 PM  
Pentax Teleconverter: time to move on?
Posted By Ian Stuart Forsyth
Replies: 57
Views: 2,187
The DOF is shallower and there is no problem with the detail in the rock found in front of the the bird which would lead me to believe that it is an issue with the placement of the focus plane
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