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Forum: Pentax KP 01-12-2020, 01:11 AM  
KP size - is it really smaller ?
Posted By jpipg
Replies: 21
Views: 2,292
Made the same transition you are considering. KP is definitely smaller despite what you think from the specs. The max height, width and depth are the same, but the volume of the KP is greatly reduced from the K5
Forum: Pentax K-30 & K-50 11-19-2019, 04:33 PM  
Using 128 GB SDXC Card on K-50
Posted By jpipg
Replies: 9
Views: 1,027
How are you going to feel if your single SD card gets fried right at the end of the trip?
I would be far too nervous to risk such a large amount of data, and I always use no bigger than 32gb cards. Just take a few spares, it will probably be cheaper anyway
Forum: Troubleshooting and Beginner Help 11-18-2019, 10:08 PM  
Is a 'Fast' lens stopped down the same as a 'slow' lens at the same aperture?
Posted By jpipg
Replies: 36
Views: 2,637
Yeah they are all the same. f8 isnít always the same size hole, because it depends on the focal length, but f8 on a $5 28mm lens is going to let in the same amount of light as f8 on a $5000 300mm lens. Of course a $5000 lens will generally have better image quality performance than a $5 lens irrelevant of the aperture used.

I suppose it might be worth mentioning that in terms of extreme accuracy, say 10ths or even 100ths of a stop, lenses do vary in their light transmission due to coatings, dust, number and composition of elements and such minutiae. Also as lenses, or more accurately, aperture mechanisms, age, they become less accurate and will vary a little from lens to lens.
Forum: Photographic Technique 11-02-2019, 01:09 PM  
Positive effects of increasing ISO?
Posted By jpipg
Replies: 23
Views: 1,669
The rightmost bits contain less information than the even the single least significant of the leftmost bits. In the case that you have a subject with narrow dynamic range, placing the values on the left side of the register gives far larger tonal resolution because those bits contain more data.

In the case when you have a scene with narrow dynamic range, you have a choice to put make those values high or low exposure. With digital, you can obtain more information by placing them in the high zones. This means that once you or the camera applies a curve to increase contrast, you can obtain a image with the desired appearance, more detail, with less noise and posterisation.

If you are in a situation where your aperture and shutter speed are fixed and you are shooting a low dynamic range scene then you will simply obtain a better image if you increase the iso. This is basically the idea behind ETTR
Forum: Pentax SLR Lens Discussion 08-27-2019, 01:56 PM  
Considering a 30-35mm prime acquisition
Posted By jpipg
Replies: 64
Views: 3,908
Iíve had a lot of lenses in this range and Iíll sum them up here

DA35 if cost is number 1 priority. Good competent lens.
DA35 Macro Limited is the best available at 35mm APS-C, my most used lens.
Sigma 30mm f1.4 if you want low light capability, this isnít the sharpest lens of the 3.
Takumar 35mm f2.3 is an awesome vintage lens but m42 isnít that great for DSLR.

The macro limited has great rendering, good for close and distant subject. The 30mm has a lot of pop because of the large aperture.

Iíve never owned one but if you want ultimate image quality, incomparable 3D pop, low light capability and guaranteed resale value, you want the 31mm limited. Itís expensive though.
Forum: Digital Processing, Software, and Printing 08-26-2019, 02:03 PM  
Workspace Discussion (monitors)
Posted By jpipg
Replies: 18
Views: 1,684
I had 2x 24Ē 16:9 monitors for years, and recently shifted to a single 29Ē 21:9 1080p dell, I get the same vertical height (approximately). I still use 2 monitors at work but I found that I didnít use both to good effect for photo editing which is the main role of my home PC. Having an ultrawide is great because the photos fit on the editing screen better, I can utilise the full height available without toolbars getting in the way. If you want to go any taller than 30cm (height), you really need to be looking at 1440p or higher
Forum: Pentax Price Watch 05-16-2019, 02:50 PM  
K-S2 body $300, w/ 18-135 $450 - from Ricoh
Posted By jpipg
Replies: 28
Views: 4,363
KS2 with 18-50 is only $399
Forum: Pentax Film SLR Discussion 03-23-2019, 07:39 PM  
[Pentax MX] Screw specifications for "bottom main gear screw"
Posted By jpipg
Replies: 3
Views: 1,090
Left hand thread screws can be hard to find. Iíd recommend buying a damaged MX to source a replacement.

Alternatively, you may be able to determine if another (cheaper) model Pentax camera has the same part and source one of those instead
Forum: Troubleshooting and Beginner Help 03-21-2019, 03:33 AM  
Receiving error message: "Memory Card Error" with my K-7.
Posted By jpipg
Replies: 7
Views: 1,406
I had a problem like this once. I considered myself lucky to have been able to get the photos off the card, then trashed the card and bought a new one.

SD cards are cheap if you only buy slow cards at modest sizes like I do, so there is no big loss and you can simply avoid the risk of that card misbehaving again.

You would feel pretty annoyed if you lost some good shots next time.
Forum: General Photography 03-07-2019, 03:38 AM  
Are all filters flat, and if so why?
Posted By jpipg
Replies: 11
Views: 1,029
Having had a ghostless filter recently, the curve was quite big. Not as big as the front element of say a Samyang 14mm, but bigger than the curve of most front elements
Forum: General Photography 03-06-2019, 08:34 PM  
Are all filters flat, and if so why?
Posted By jpipg
Replies: 11
Views: 1,029
Pentax used to make a curved filter, the Pentax Ghostless filter, back in the pre SMC days. I think the production costs outweighed the benefits
Forum: Film Processing, Scanning, and Darkroom 03-05-2019, 11:59 PM  
Film developing 101
Posted By jpipg
Replies: 31
Views: 2,661
Simply:

0. Take some photos
1. Load the film to the tank in the dark (using a very dark room or special bag designed for the purpose)
2. Use developer as per manufacturer instructions, then wash.
3. Use fixer as per manufacturer instructions.
4. Final wash film and hang to dry.
5. Scan or wet print your negatives.
6. Become addicted to developing and experiment with the above steps

Step 6 is optional...
Forum: Pentax News and Rumors 02-13-2019, 03:03 AM  
Stealth KP
Posted By jpipg
Replies: 42
Views: 7,104
I would love one of those wooden grips for my KP
Forum: Photographic Technique 12-10-2018, 02:58 AM  
Anyone use an iPad as a larger Liveview for Focusing?
Posted By jpipg
Replies: 7
Views: 1,134
You can download the Pentax app, "Image Sync", should work with your K1. I have used it for posing self portraits on tripod
Forum: Pentax SLR Lens Discussion 11-30-2018, 12:16 PM  
Are glass blemishes really affecting performance of vintage lenses?
Posted By jpipg
Replies: 22
Views: 2,308
Most of my lenses have come to me in less than stellar condition due to my eternal poverty. I have removed mould from a few, have some with scratches or water spots and some that are wobbly. I have never been disappointed by a lenses performance compared to examples from presumably mint copies that I have seen online.

This includes my da15 with a long scratch on the rear element. Also my fa50 showed no improvement after I cleaned the mould off the rear element, so I wouldnít even be too worried about defects on the rear of a lens either.
Forum: Non-Pentax Cameras: Canon, Nikon, etc. 10-23-2018, 09:15 PM  
fujifilm statement
Posted By jpipg
Replies: 16
Views: 1,973
Donít really know why they would go FF. They have APS-C covered and if people have a lot of cash or need that next level performance they can opt for the fairly well priced medium format.
Forum: Pentax Film SLR Discussion 10-21-2018, 03:52 PM  
Pentax P5 viewfinder information
Posted By jpipg
Replies: 5
Views: 837
Just do a light half press on the shutter button, and that should activate the meter
Forum: Pentax DSLR Discussion 10-19-2018, 08:59 PM  
A Pentax Hidden Feature Perhaps?
Posted By jpipg
Replies: 25
Views: 3,361
This is gold

Thanks!
Forum: Pentax DSLR Discussion 10-09-2018, 01:06 AM  
two things, k3 prestige value, and compact travel options
Posted By jpipg
Replies: 29
Views: 2,146
Have never used a K3, but I used to have a K5 which I believe is smaller than the K3. Now I use a KP, and it is far smaller and more compact than the K5. The dimensions don't really describe the size of the camera as the camera is not a box. For DLSR, the box around the camera is pretty fixed in its depth due to the mirror box, sensor and screen, and the length is pretty fixed due to the mount diameter plus an ergonomic grip.

If you look at the link posted above, you can see all the areas where there is something on the K3 filling the imaginary dimensional box that is not there on the KP. This is especially evident from the top down comparison

It is much smaller in the hand because it's physical volume is reduced. That is to say that if you were so inclined to try it, the KP would displace far less water than the K3 if you immersed them in a bucket (not recommended)
Forum: Troubleshooting and Beginner Help 07-28-2018, 04:02 PM  
color correction
Posted By jpipg
Replies: 10
Views: 698
Since you have the filter, see online for examples of what a blue filter does to black and white film. Could be something to try if you can accept the one stop loss from an 80B
Forum: Post Your Photos! 07-28-2018, 03:59 PM  
Nature #meow
Posted By jpipg
Replies: 5
Views: 804
Cute cat! Hope his eyes are not that bright in reality, he would be a scary sight to run into on a dark street - at least he is not a black cat!
Forum: Post Your Photos! 07-28-2018, 03:56 PM  
People people in the long term
Posted By jpipg
Replies: 4
Views: 420
Great abstract shot. No definition allows your mind to fill in the blanks, this shot reminds me of my last camping trip in fact I can even see my friends faces in there!
Forum: Post Your Photos! 07-28-2018, 03:54 PM  
Sports Don't Flinch
Posted By jpipg
Replies: 6
Views: 870
Perfect timing, interesting to see that proud little gout of flame, which is probably too short lived to be noticed in its entirety by the eye
Forum: Post Your Photos! 07-28-2018, 03:51 PM  
Landscape August Supermoon 500mm Mirror Lens
Posted By jpipg
Replies: 8
Views: 999
I have a hard time getting a shot this sharp from my 500mm mirror
Forum: Troubleshooting and Beginner Help 07-28-2018, 03:47 PM  
color correction
Posted By jpipg
Replies: 10
Views: 698
If your goal is to scan film, you can mute warm colours later. If you are aiming for lab prints, some labs will correct colour before printing anyway.

Sometimes warm tones can work, or at least are not too distracting. I wouldnít worry about using a filter for colour film just for lens correction, especially when you consider the light loss and quality loss that can be caused by a filter.
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