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Forum: Pentax SLR Lens Discussion 04-24-2020, 05:08 AM  
Difference in aperture setting on on DFA* 50 versus DFA* 70-200 on non-Pentax cameras
Posted By Dericali
Replies: 6
Views: 402
Great thanks, I guessed as much. So I guess it's effectively an arbitrary consequence of the design and electronics that they work this way?

In bright sun, you can get correct expose at around ISO 500, (1/50 + f22).
Forum: Pentax SLR Lens Discussion 04-24-2020, 03:17 AM  
Difference in aperture setting on on DFA* 50 versus DFA* 70-200 on non-Pentax cameras
Posted By Dericali
Replies: 6
Views: 402
I have used both these lenses for videography, using the lens with a lens mount adapter and a non-Pentax camera capable of 4k shooting.
I expected no aperture control and planned to only shoot wide open, potentially using a ND filter to control exposure given that the shutter speed would be 1/50s.
However, and this surprised me, while the DFA*50mm did perform like this, the DFA*70-200 appeared to be at a much smaller aperture, and needed about 5000 ISO to expose correctly.
Can someone explain to me why this is?
Forum: Photographic Industry and Professionals 12-18-2019, 04:38 AM  
Opinions wanted on photos from a pro
Posted By Dericali
Replies: 22
Views: 1,202
So basically, you didn't notice these 'flaws' which were there on the other photos on the website when you booked the photographer, but you notice them now.

You also don't expect that anyone else in the family will notice them....

Sounds like there's no real problem.
Forum: Photographic Industry and Professionals 12-17-2019, 01:33 AM  
Opinions wanted on photos from a pro
Posted By Dericali
Replies: 22
Views: 1,202
One question - do these photos resemble the other photos on the photographer's website? Is this their style? What was it that made you choose them in the first place? If the photos you received resemble the style they 'advertise; with then I don't think you have much grounds for complaint, though ISO 2500 is pretty weak. Though there is some latitude for a photographer to introduce a more film style noise pattern for printing.
Forum: Pentax SLR Lens Discussion 11-30-2019, 02:03 PM  
Price aside, Pentax-D FA* 50mm f1.4 or Pentax-FA 77mm F1.8 Limited?
Posted By Dericali
Replies: 52
Views: 2,702
You could also consider the DFA 50mm Macro, it's very compact and a pretty good lens if you're okay with the older autofocus function.

The DFA 50 f1.4 is heavy and dense, it's definitely not an alternative to the 24-70 if weight is an issue.

The 28-105 is nearly as good the 24-70, if you don't intend to use it for shooting something like low-light events where you need the faster aperture, you don't mind variable aperture, and you don't want to try to shoot portraits with bokeh (because the bokeh on the 28-105 is fairly busy, e.g. when foliage is in the background), and you don't often shoot wide (i.e 24mm) because you'd be losing that.
Forum: Pentax SLR Lens Discussion 10-16-2019, 05:05 AM  
Favorite lens for shooting food at a restaurant
Posted By Dericali
Replies: 35
Views: 1,728
Is there a perfect lens for this? in my opinion, one of the more important aspects is that the out of focus areas appear smooth and creamy, rather than nervous and distracting, especially when there are specular highlights such as on greasy food.
Forum: Pentax K-1 10-13-2019, 02:06 AM  
K-1 Video
Posted By Dericali
Replies: 11
Views: 756
The quality of the video output is not exactly great by contemporary standards, but if you have a good lens, the lighting is good, you're accurately focused and the camera is stable, you should get usable footage.

The K1 is okay for tripod work only, but nothing handheld because of the jello effect, which is quite bad and that is a big limitation for most video production or everyday use (in my experience).
Forum: Pentax Full Frame 10-09-2019, 01:11 AM  
Pentax K1-II lightroom tether not working - on one computer
Posted By Dericali
Replies: 11
Views: 776
It's an 27'' Imac 5k, I guess 2018 or 2017 model year. Haven't had time to do the retest.

I"m also using one of the orange tether tools usb cables, not sure if my one has any kind of signal enhancer.
Forum: Pentax Full Frame 10-08-2019, 08:40 AM  
Pentax K1-II lightroom tether not working - on one computer
Posted By Dericali
Replies: 11
Views: 776
Has never worked on my Imac. I'll try different USB ports, good suggestion.

Shorter cable might speed up data transfer time, but the issue is that it's not working at all.
Forum: Pentax Full Frame 10-07-2019, 12:53 PM  
Pentax K1-II lightroom tether not working - on one computer
Posted By Dericali
Replies: 11
Views: 776
Same cable. LR actually recognises that there is a Pentax K1 Mark II connected when I start tether, but the red 'card reading' light on the K1 stays on and I can't take photos at all.

Like I said, switch the same thing over to my laptop and it works perfectly.
Forum: Pentax Full Frame 10-07-2019, 09:51 AM  
Pentax K1-II lightroom tether not working - on one computer
Posted By Dericali
Replies: 11
Views: 776
I'm a long-time user of Lightroom tether with my K1-II. It works fine on my macbook pro... but doesn't work on my iMac.

I have downloaded the latest plug in, and I don't think there's any issues with my camera settings, because it works fine currently on my laptop. All software is up to date.

Any suggestions for what it could be?
Forum: Photographic Industry and Professionals 10-04-2019, 11:43 AM  
Our Future
Posted By Dericali
Replies: 47
Views: 3,331
This 100%.

How can Pentax support something they stopped manufacturing 20 years ago? Do you think they have spare parts lying around for 20 years? Or they're just going to make them new?
Forum: Pentax K-1 09-26-2019, 01:34 AM  
autofocus setting question K-1ii
Posted By Dericali
Replies: 3
Views: 655
Though if you're changing the AF position you'll also be bumping the WB and other buttons.

You can use the Spot autofocus mode which sets the focus point to the central focus point only.

This is in the manual, page 52
Forum: Pentax News and Rumors 09-24-2019, 01:35 AM  
New K-series DSLR under development to be exhibited
Posted By Dericali
Replies: 3,487
Views: 257,507
Even then you can have a problem with glare. If you're doing video you need a flippy screen, unless you buy an additional monitor.

In terms of a DSLR versus a camcorder, the advantage to the camera would be great lens selection, greater depth of field control, better manual focus experience. Camcorders are simpler and normally have better IBIS, better all purpose video autofocus.
Forum: Pentax SLR Lens Discussion 09-23-2019, 01:31 AM  
Pentax lenses on Sony Alpha cameras
Posted By Dericali
Replies: 3
Views: 920
If you're using a lens with an aperture ring then you can pick up a very cheap adaptor, like 20 bucks, since essentially it has no functionality it's just a tube.

In terms of functionality, mirrorless does have some good close focus support via magnification tool, you can set this up as a shortcut or happen automatically as a MF assist.

The one downside for me ergonomically is that adding the adaptor moves the centre of gravity of the lens forward, so it's not going to feel as well balanced as on a Pentax body.
Forum: Pentax News and Rumors 09-23-2019, 01:24 AM  
New K-series DSLR under development to be exhibited
Posted By Dericali
Replies: 3,487
Views: 257,507
Literally no. I don't mean a screen that flips around for selfies. I mean a screen that doesn't force you to crouch down behind a tripod mounted camera. Very seldom does one record video from eye height.
Forum: Pentax News and Rumors 09-22-2019, 04:38 AM  
New K-series DSLR under development to be exhibited
Posted By Dericali
Replies: 3,487
Views: 257,507
Yeah the problem is if they boost the video specs on the new camera but then don't have some kind of flip out screen. No flip out screen makes video very difficult without using an additional monitor.
Forum: Pentax News and Rumors 09-21-2019, 02:02 AM  
New K-series DSLR under development to be exhibited
Posted By Dericali
Replies: 3,487
Views: 257,507
Indeed. If it's a programmable function button 'shutter function' then likely one could program it to be the movie record button, for those that prefer to use this function rather than shutter release.

The presence of the AF joystick gives me hope that Pentax will give users what they have long been pining after - better AF and better video. (Because then Pentax cameras would be perfect).

Video is easier to do well with a smaller sensor, so APSC rather than FF. (some of the other speculative discussions around some kind of digital view finder read out would support improved video specs such as clean HDMI read out).

The presence of the video icon on the third wheel suggests to me that this camera is more video focused... and that Pentax is doing away with *some* of its usual conventions.
Forum: Pentax News and Rumors 09-20-2019, 02:58 PM  
New K-series DSLR under development to be exhibited
Posted By Dericali
Replies: 3,487
Views: 257,507
Could be video record button? That's what they look like sometimes. .
Forum: Pentax News and Rumors 09-20-2019, 02:49 PM  
New K-series DSLR under development to be exhibited
Posted By Dericali
Replies: 3,487
Views: 257,507
There is a LV icon on the third wheel, next to the movie icon ;)
Forum: Pentax K-70 09-16-2019, 01:44 PM  
To Filter or Not to Filter
Posted By Dericali
Replies: 17
Views: 1,538
You can also use ND filters for purposes other than long exposure. Such as slowing down shutter speed in bright sunlight to increase dynamic range and reduce strong shadows. Bright sunlight is a phenomenon that occurs outdoors and therefore this might be another occasion when the general photographic purpose of a lens filter dovetails nicely with protection of the front element of the lens.
Forum: Pentax K-70 09-16-2019, 02:15 AM  
To Filter or Not to Filter
Posted By Dericali
Replies: 17
Views: 1,538
I've started using UV filters when shooting around children - they have a tendency to throw sand, bump the lens etc.

The other time it's good is when shooting at a beach or at an areas with fine water spray that gets on the front element.

Polarising filters are a separate discussion topic. Ideally I'd have the option of using one when shooting in bright sunlight, you can get much richer colours in the sky or obviously water will appear different.

Using an ND filter can also be smart if there's harsh sunlight.
Forum: Pentax K-1 09-06-2019, 01:32 PM  
John Bradford reviews K-1
Posted By Dericali
Replies: 13
Views: 1,782
Hope you get to use the DFA* 50mm soon, it's a world apart from most of the other Pentax lenses.
Forum: Pentax K-70 09-06-2019, 12:46 PM  
Color accuracy?
Posted By Dericali
Replies: 39
Views: 2,679
Sounds like a good set up.

This stuff isn't hard. Just requires a basic understanding, a system that works, and most of all consistency and always shooting the grey card.
Forum: Pentax K-70 09-03-2019, 03:05 AM  
Color accuracy?
Posted By Dericali
Replies: 39
Views: 2,679
I use an x-rite colour checker for the reference, and I create custom profiles for each individual shoot and your camera. Obviously if the light is changing a lot then you may need to take multiple colour checker photos and create multi-shot profiles.

But as @BigMackCam essentially says, going to this level of effort is pointless if the screen you edit on is not calibrated.

The effects you notice with reds and yellows may be just as likely to be an issue with the monitor you view the photos on as it is with the camera, assuming you're using only a single monitor.
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