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Forum: Pentax K-70 09-03-2019, 08:15 AM  
Color accuracy?
Posted By CarlJF
Replies: 38
Views: 1,183
The first thing to do is to make sure your screen is properly calibrated. Many monitors, if not most, are way off by default. This can be done with a probe (Spyder, Colormunki...) and software that will make and apply a standard profile for your graphic card/screen combo.

Without a calibrated screen, it’s impossible to know if the color cast you observe is from the camera or the screen...
Forum: Photographic Industry and Professionals 08-27-2019, 06:05 AM  
DxOmark lens "scoring" versus facts - the good, the bad and the really ugly
Posted By CarlJF
Replies: 30
Views: 1,334
Let’s not forget that DxO warns users that lens scores can’t be compared between different cameras. The scores are for the specific lens+camera combo, not for the lens only. It’s not the fault of DxO if people don’t care about this and look at the scores blindly without taking time to minimally understand what they really mean.

That said, I’m not a big fan of DxO scores myself. Outside of bragging on the internet, they’re useless more often than not.
Forum: Pentax SLR Lens Discussion 08-16-2019, 05:41 AM  
Tamron 17-50 a bit yellow?
Posted By CarlJF
Replies: 3
Views: 401
I had a “wrong FL reported” issue and it needed to be repaired. If still under warranty, send it back. If not, you can ask a local shop to into it or send it back to Tamron for a paid repair. If you decide to not repair the lens, deactivate IBIS since the wrong reading will mess with it and make long exposure blurrier.
Forum: Pentax Full Frame 07-31-2019, 12:12 PM  
K1 or Canon 5D Mark IV for a 645Z owner?
Posted By CarlJF
Replies: 73
Views: 3,523
For wildlife at long rang, why not look at a APS-C camera? Much cheaper and lighter than a FF! And just as good if not better for long range shot.
Forum: Pentax SLR Lens Discussion 07-15-2019, 05:01 PM  
Autofocus issue with DA 17-70
Posted By CarlJF
Replies: 28
Views: 1,588
Just to complete the story in case someone get this same problem, the lens is back from repair. The repair ticket said that the "brush assembly" was replaced. No matter what it means, hopefully it will solve the problem once and for all.
Forum: Troubleshooting and Beginner Help 06-19-2019, 05:53 AM  
Disappointment due to Sigma 17-50 f2.8 on K50
Posted By CarlJF
Replies: 25
Views: 1,632
A picture would help. But you should not expect to get corner to corner sharpness and a high level of homogeneity in a non professional zoom. In fact, even pro zooms costing thousands of $ aren’t perfect in this regard.

So, yes, softness is expected from a zoom like the Sigma. It has some sweet spots and others that are so-so. It’s for you to get the best of it.

If you want the best possible IQ, you should get prime lenses. Even a cheap DA50 1.8 or DA35 2.4 will be much better. Zooms are used for convenience and versatility, not for the best performance.
Forum: Flashes, Lighting, and Studio 06-17-2019, 09:11 AM  
Flashgun Selection Question
Posted By CarlJF
Replies: 6
Views: 581
The 540FGZ version 1 could fit the bill. But check the specs to be sure...
Forum: Pentax News and Rumors 06-14-2019, 09:38 AM  
New Sony APS-C Sensor - 26MP
Posted By CarlJF
Replies: 1,132
Views: 75,155
Why, in 2019, would someone designed a sensor that can't be used in a mirrorless ? They still work just fine in a DSLR. No need for the manufacturers to develop a DSLR-Only line of sensors.
Forum: Digital Processing, Software, and Printing 06-14-2019, 07:06 AM  
Photo Editing Software
Posted By CarlJF
Replies: 28
Views: 2,054
The Lightroom and Photoshop combo is really hard to beat. DxO Photolab is excellent if your camera is supported.
Forum: General Photography 06-14-2019, 05:51 AM  
Fullframe camera is for whom?
Posted By CarlJF
Replies: 52
Views: 2,961
A K-1 for 600$ is a very good deal. However, as others said, putting good glass in front of it micght rapidly become quite expensive. It doesn't make much sense to get this kind of premium body without willing to put some money to get the best glass paired with it...

High contrast midday scenes are always challenging for any photographers, even with a FF camera. So, a K-1 might be of some help but probably still not enough. Others have proposed godd technical solutions. But you can also make do with the lighting conditions as they are. There's nothing wrong with having the shadosw deep black if it serves the pictures. You can experiment with backlighting with some elements only appearing as black vignettes... Or find interesting shadow patterns... Instead of fighting the scene, try to flow with it and make the best of it, even if it means stepping outside what you usually do. Just don't look for the pictures usually done in completely different lighting conditions.
Forum: Pentax SLR Lens Discussion 06-07-2019, 01:45 PM  
Autofocus issue with DA 17-70
Posted By CarlJF
Replies: 28
Views: 1,588
Yes, it could be a software problem and certainly looks like it. I will let you know when the lens is back.
Forum: Pentax SLR Lens Discussion 06-06-2019, 12:34 PM  
Autofocus issue with DA 17-70
Posted By CarlJF
Replies: 28
Views: 1,588
I'm bringing back this thread to give some news about the lens, in case someone else has the same problem. The "wrong focal length reported" problem is back. Any shots taken below 24mm is reported as something else on the camera LCD. As before, this wreak havoc with IBIS and AF. So, I will send back the lens for repair since it's still covered by warranty. Not funny...
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 06-05-2019, 11:34 AM  
Nikon [5] vs Pentax [1]
Posted By CarlJF
Replies: 91
Views: 3,804
Nikon didn't annouced anything. They're only rumors reported from the Nikon Rumors website... And Nikon Rumors tells these even aren't particularly reliable rumors. So,maybe, maybe not... And Pentax is also runmored to launch some cameras in the next 2 years, particularly if looking at unreliable rumors.
Forum: Troubleshooting and Beginner Help 06-04-2019, 06:29 AM  
K-3 and Deported pentax flashes in HSS possible?
Posted By CarlJF
Replies: 17
Views: 878
If your main goal is to use HSS, I would higly recommend the radio trigger or a cable over a two flashes optical trigerring. Because, usually, HSS is needed when there's a lot of ambient light, often outside in daylight. The problem being with this high level of ambient light tends to blind the optical trigerring making the whole sytem unreliable, HSS or not. If the deported flash sees even a hint of direct sunlight, there's a good chance it will not trigger at all.
Forum: Troubleshooting and Beginner Help 06-02-2019, 07:13 AM  
K-3 and Deported pentax flashes in HSS possible?
Posted By CarlJF
Replies: 17
Views: 878
The integrated flash doesn't support HSS. So, the fastest shutter speed you can get with it is sync speed.

To use the 360 deported in HSS, you will need some extra stuff. The cheapest being a good old P-TTL cable. You can also get another flash supporting wireless HSS as a controller, or a HSS compatible radio trigger kit.
Forum: Pentax Camera and Field Accessories 06-02-2019, 06:42 AM  
Flash exposure using PTTL
Posted By CarlJF
Replies: 13
Views: 718
Having a good picture with flash is more than simply putting the unit on the camera and expecting it to give exactly the intended results, no matter if it's P-TTL or not. You should give a good read or two at Strobist (mostly manual flash) and NeilVN Tangent's (lot of good tutorial on TTL falsh) websites to learn the basics.

But, as a crash course, what you should do is:

1) Decide the wanted ambient exposure. This is done by using exposure compensation or M/X mode. The more the picture is underexposed, the more the contribution from the flash will be important.

2) Adjust the output of the flash. This is done with flash exposure compensation or putting the flash in manual mode. You can (and often have to!) use negative FEC to make the flash more subtle, particularly if ambient light contributes significantly. There's no good or wrong way, or one-size-fit-all settings here. It all depends on the scene and what you're trying to achieve.

Said otherwise, you should think of flash photography as blending two pictures in one: one taken without flash and the other with the flash. If you have a washed out result, as you descrbed, it means the blend is not good. Usually it means too much and you should try underexposing the ambient or flash contribution.

For the specific issues you're mentioning, it would help a lot have a lot to post pictures to identify what can have be wrong.

Also remember that P-TTL flash exposure will be affected by the target reflectivity. Dark subject will tend to lead to overexposure while white subject will lead to underexposure. Higly reflective surfaces (like mirror, glass, polished metal...) can also completely fool the P-TTL system, sending back a lot of the light back and thus making the flash lowering its power level to compensate.
Forum: Pentax Q 05-31-2019, 10:41 AM  
Let's share shots with Q!
Posted By CarlJF
Replies: 6,161
Views: 926,243
I don't know if it's could be counted as GAS, but Rmcnelly, your pictures on this thread just made me buy a 07!
Forum: Pentax SLR Lens Discussion 05-31-2019, 10:04 AM  
Pentax 55/1.4 DA vs Nikon 58/1.4 on Full Frame
Posted By CarlJF
Replies: 39
Views: 2,180
Just putting my grain of salt (or sand). It should be noted that the DA* 55 1.4 is an APS-C lens. And although it works fine on FF more often not, it's difficult to recommend to buy one for this without any afterthought. The DFA 50 1.4 or the 77 1.8 are thus preferable since they're both FF lenses.


That said, if you look for the exact same rendering as the 58 1.4 on a Nikon, I fear there's no substitute to using the 58 1.4 on a Nikon! Each lenses will render differently and are "good" in their own rights. But none are designed to be a Pentax copy of the 58 1.4. Either you like their rendering or not, but it shouldn't be expected to be the same.
Forum: Pentax Q 05-28-2019, 05:19 PM  
Let's share shots with Q!
Posted By CarlJF
Replies: 6,161
Views: 926,243

Q7, 01 lens
Forum: Pentax SLR Lens Discussion 05-27-2019, 11:32 AM  
Portraits with the Pentax DFA* 50mm F1.4 at Japan-Day, Düsseldorf, Germany
Posted By CarlJF
Replies: 5
Views: 1,134
They're all really good! Nice work!
Forum: Photographic Technique 05-22-2019, 01:55 PM  
High/Low key adjust vs. exposure compensation
Posted By CarlJF
Replies: 7
Views: 693
Correct!
Forum: Photographic Technique 05-22-2019, 11:56 AM  
High/Low key adjust vs. exposure compensation
Posted By CarlJF
Replies: 7
Views: 693
The custom image settings doesn't change the way the picture is exposed. They only affect how the correctly exposed image is processed toward a low/high key look.It's kind of a processing preset or a filter applied to the raw file and not a specific set of exposure settings.

On the other hand, exposure compensation really change how the picture is exposed. Which don't necessarily mean, more often than not, a high or low key look. The goal usually being to compensate exposure for scenes with a large amount of white or dark colors leading respectively to a underexposed or overexposed picture. Or, said otherwise, you want the white to look white and the black to look black instead of grey.

Thse are two completely different things.
Forum: Pentax Film SLR Discussion 05-22-2019, 06:13 AM  
Beginner to manual cameras
Posted By CarlJF
Replies: 7
Views: 623
Although they sound simples, whole books have been published answering these! In addition to the suggestions above, a good book on general photopgraphywould help a lot.

Now, some quick answers:

Lenses aren't at all like filters. You can't duplicate or simulate the effect of different lenses with software filters. Different lenses will have different field of view, offering you the possibility of different perspectives on the final image. No filter or software trickery could, and never will be able to, alter the perspective of a picture. Because software can't change the law of physics...

For films, yes, the kind of film matters. Obviously you have color and B&W films. And each fuilm will have it's own charecteristics: saturated colors, natural colors, flesh balanced, high or low contrast, low sensivity or high sensitivity... For developing, you bring the film to a lab and pay them to develop it. You can also do your own darkroom at home, but it requires to get the equipment and a spare room to do it. Realistically, DIY is only an option for B&W development.

That said, you can also get much of the experience by buying a DSLR without the hassle and cost of films. You just use the camera as you would with an old film camera. All the options are there. The main difference being that you bring a SD card to the lab instead of a film... Any DSLR will allow you to use it in full manual mode if you wish to. And Pentax DSLR will even allow you to use old film era lenses going back to the '70s.
Forum: Film Processing, Scanning, and Darkroom 05-18-2019, 05:59 AM  
Scanned negatives VS old school prints
Posted By CarlJF
Replies: 11
Views: 903
Yes, AFAIK it is the way it's done. It was even like this in the last few years of the film era, before digital cameras became the norm. It's much less hassle for the lab to maintain and operate a scanner and a printer than the whole chemical process. Maybe there's a lab somewhere still doing the old way, but it's really a speciality lab.
If you want better quality, you have to do the scan yourself or get dirty and build a DIY lab.
Forum: Pentax K-r 05-17-2019, 07:41 AM  
Problem with Pentax A 50mm 1.7
Posted By CarlJF
Replies: 7
Views: 648
Which version of the 50mm 1.7 are you using ? The M, A, F or FA ? If it's an older K-M, aperture can't be controled from the camera, you need to use the aperture ring on the lens.


If it's one of the others, make sure the aperture ring on the lens is set to the A position.
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