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Forum: Mini-Challenges, Games, and Photo Stories 01-06-2021, 03:23 PM  
Post-Processing Post Processing Challenge #356
Posted By Kerrowdown
Replies: 65
Views: 2,364
Ok I'll play... lets get the ball rolling. :D
Forum: Pentax Medium Format 01-05-2021, 02:56 AM  
Flange to Focal Plane for 645z
Posted By Paul the Sunman
Replies: 28
Views: 998
70.87mm is the official Pentax 645 flange focal distance. I don't see how it could be different for film and 645D/Z, as the lenses are the same.
Forum: Pentax K-1 01-05-2021, 08:51 AM  
I love my K-1, but...
Posted By robgski
Replies: 33
Views: 1,523
I really wish the "No Card in Camera" would appear prominently upon start up, BEFORE I walked far from my camera bag and tried to capture a once-in-a-lifetime image.
Forum: Pentax Medium Format 01-02-2021, 03:01 PM  
using the 645Z/D as a mirror-less camera.
Posted By barringtonpro
Replies: 9
Views: 730
cancel
Forum: Pentax K-30 & K-50 01-02-2021, 11:31 AM  
New help ASAP with White balance suggestions....
Posted By pres589
Replies: 28
Views: 806
I would set the white balance to 5000K manually and not use auto white balance. Shoot in RAW. I think I'd shoot in Av mode with ISO set to auto. And when in doubt, under-expose, and push in post.

Hopefully others see this thread and add information / opinions to weigh.
Forum: Pentax Film SLR Discussion 12-30-2020, 01:41 PM  
New High intensity adventure: Pentax MX restoration
Posted By ismaelg
Replies: 39
Views: 1,857
Hello,

Last few weeks have been really hectic. Dealing with a lot of personal stuff including my father's health which is deteriorating. I haven't been very active with any of the hobbies but at least working on something, even if only a few minutes a week, helps me recharge.
By now you know I like to tinker with old cameras. The Pentax MX is considered by many the ultimate mechanical SLR along with the LX. It is still very popular.
I got a non-working MX on eBay. Not sure if I can get it back to work but it will be a learning experience as I've never worked on anything newer than K1000.
While "mechanical" it is far more complex than earlier models. And scarily so.
This is what I got:

Mirror stuck in the up position


buckled curtains. That looks serious...


Started disassembly without any clue of what to look for




While working to remove the mirror box, something went "Clack" and the curtain closed. "Huh? What the...?"
My instinct told me to put everything back together. So I did and in the process, I resoldered the wires to the aperture coupler metering circuit.


These will not win any solder joint beauty contest, but the meter now works!

Putting everything together, the camera "worked" at 1/60s. But at other speeds it randomly got stuck. But something was not right. Can't explain it but it sounded "weird". That was when I noticed upon close inspection the curtains are not in the right place!
This camera has been tampered with and assembled wrong! ( :lol: That's MY job!)

However, since the curtains are the most inner parts, everything needs to be taken apart.
Here is where we are now after desoldering some wires to allow the mirror box out of the way:
To boldly go where I've never been before!




This is a very long term project. I honestly don't have much hope this may ever be a functional camera again, but I'm just having fun.

Thanks,
Forum: Pentax DSLR Discussion 12-26-2020, 08:00 AM  
The Six-Megapixel Club
Posted By hjortron
Replies: 2,108
Views: 182,313
@YeOldePentaxian: Amazing colour gradients!
@Simon K: I still wait for my cormorant! & LOL (the rhino)



K100D (it would use some sensor cleaning) + Sigma Hyperzoom
Forum: Pentax DSLR Discussion 12-27-2020, 05:23 AM  
The Six-Megapixel Club
Posted By hjortron
Replies: 2,108
Views: 182,313
@paulh: Those Green leaves, Red blossoms and Blue water make a nice test for your *ist D Bayer filter. :) Boats are photogenic.

Here's a shot from under a railway bridge, taken during my yesterday's walk blessed with an unexpected sunlight. An overcast day had been forecasted. Not so far from that teepee. K100D + Sigma Hyperzoom again.

Forum: Pentax DSLR Discussion 12-29-2020, 12:23 PM  
The Six-Megapixel Club
Posted By glinda
Replies: 2,108
Views: 182,313
Pentax m 40/ 2.8 by gllnda h, on Flickr

winter.

k100d super, m 40/ 2.8
Forum: Pentax DSLR Discussion 12-29-2020, 02:12 PM  
The Six-Megapixel Club
Posted By paulh
Replies: 2,108
Views: 182,313
Congrats, and welcome! We look forward to seeing your images soon!

SMC-A50/2.8 macro on *ist D:
new blooms by Paul Hensley, on Flickr
Forum: Pentax SLR Lens Discussion 03-12-2009, 03:51 AM  
Three 105's compared
Posted By Nesster
Replies: 21
Views: 10,617
Yes, Georg, the T4 mounts, whether Soligor or Vivitar, were all Tokina made, as far as I've been able to figure. Hin, I don't know of any list of Soligor serial numbers, perhaps they didn't systematize that way, perhaps they did. One of the Remaining Mysteries... I wonder, if someone could get a grant to ferret out the marketing etc details of the 70s and 80s SLR boom, for a dissertation and online database? Stimulus package, where are you!

Meanwhile, to get you Tak fans off the ledge, or to put down the pitchforks:



Here the focus is more comparable, though the Takumar shot has slightly more exposure than the Soligor side.

At f/5.6 I'd say approximately even, the Soligor has that Tokina cool color, though very sharp. The Tak has the better color, slight edge in contrast...
Forum: Pentax SLR Lens Discussion 06-08-2009, 05:58 AM  
SMC Tak / Soligor T4 2.8/105 comparison
Posted By Nesster
Replies: 4
Views: 9,420
Another round of comparing these two lenses, looking at the bokeh etc and not just sharpness. This time around, sharpness/detail wise, the Takumar edges the Soligor, but I'll leave the rest to everyone's eyes.

I did my best to focus on the same thing for each lens. I note the Soligor consistently has slower shutter speeds than the Tak, probably due more to lighting conditions (clouds) than difference in absolute speed. Though at 5.6 the Soligor maybe has a slightly deeper DOF.

Full size available by clicking on the image, via flickr.



SMC Takumar 2.8/105mm @f/2.8 1/1600


Soligor T4 2.8/105mm @f/2.8 1/1250



SMC Takumar 2.8/105mm @f/5.6 1/320


Soligor T4 2.8/105mm @f/5.6 1/250
Forum: Pentax K-1 12-15-2020, 12:12 PM  
Post your K-1 pictures!
Posted By Belcik
Replies: 31,159
Views: 2,857,844
Frederic, perfect as always...
Small question, I might be asking that already godzillion years ago - signatures: "FF Mode 400 ISO Sigma Art 18-35mm F1.8 DC HSM" you generate them with some script or put it manually?
Forum: Pentax K-1 12-16-2020, 01:02 PM  
Post your K-1 pictures!
Posted By Erictator
Replies: 31,159
Views: 2,857,844
Very nice set Frederic, really like the first one with ART lens, almost 3D!

I'll give him my Soly as soon as you give me your DA560mm Frederic. ;):lol::p
Ready for my shipping info? :D
Eric

Speaking of the Soligor, a couple more pics before Frederic sends me his DA560mm and I have to give the Soly away...

Pentax K-1 Soligor 20.0 mm F2.8 1/500 iso100


Pentax K-1 Soligor 20.0 mm F2.8 1/500 iso100
Forum: Film Processing, Scanning, and Darkroom 12-07-2020, 08:07 PM  
Options for 110
Posted By Lhorn
Replies: 8
Views: 576
Depending on the film cassette (whether its notched or not) I believe the auto 110 treats the film as 400 or 80 I believe. I think 100 and 200 iso film is considered close enough to be shot as 80 with good results.

I think non perf film or single perf film are preferable to double perf.

---------- Post added 12-07-20 at 09:08 PM ----------

Filmphotographystore and some
Other film retailers sell bulk non-perforated 16mm film which would work well. I think they have 100 iso stuff in stock
Forum: Pentax Q 10-12-2020, 07:10 PM  
Let's share shots with Q!
Posted By diliegrOS
Replies: 6,512
Views: 1,026,010
Hi, everyone, it's been a long time, I really hope you're doing well. :)

En camino by Julio Diliegros, en Flickr

Copiloto ejemplar by Julio Diliegros, en Flickr

Viejas amistades by Julio Diliegros, en Flickr
Forum: Pentax Q 09-10-2020, 04:52 PM  
Let's share shots with Q!
Posted By kwb
Replies: 6,512
Views: 1,026,010
I like jumping spiders. This one was scouting from behind the window lock in our bedroom.

Behind the Lock by k kwb, on Flickr

This was shot with Q7, Vivitar Series 1 VMC F2.5 macro for Canon FD mount at F/9, and a dedicated Vivitar 1:1 Macro adapter which I think is a 2x teleconverter, therefore combined with the lens it's F/18 in reality (!!).

BTW, this might be a good example of why I don't worry too much about blurring due to diffraction. I like this picture anyway even if this is not THE sharpest picture I can take with my existing lenses in theory.
Forum: Pentax SLR Lens Discussion 10-14-2020, 01:36 PM  
Pentax 35mm f/2.0 SMCP-FA AL or the new HD model?
Posted By stevebrot
Replies: 23
Views: 1,184
As noted above, I would take the HD reviews with a grain of salt, particularly the "6" rating.* I shoot with the original FA 35/2.0 and it is on my "never sell" list, mostly because it has never let me down. That said, I might consider purchase of the HD version at some point, because:
  • Same optical design (the original was a premium offering when it debuted 21 years ago) and compact form factor as the original

  • While the "ghostless" coating on the original is pretty amazing, as in almost no reflections off the front and inner elements, the HD coatings are supposed to be even more so

  • The focus ring on the HD version looks to be an improvement over the lens that I own and should make manual focus easier when gloved and/or with the hood on

If you like the example photos from the original, you can expect similar from the HD.


Steve

* I don't believe the "don't buy" recommendation is merited, particularly within the context of the actual review. Beyond that, I don't concur regarding bokeh evaluation, handling, AF, value, and appropriateness for intended use. On FF, mine is used for urban and street photography and on APS-C, as a general walk-around prime.
Forum: Pentax SLR Lens Discussion 10-14-2020, 01:34 PM  
Pentax 35mm f/2.0 SMCP-FA AL or the new HD model?
Posted By ChristianRock
Replies: 23
Views: 1,184
I have the DA 35 2.4 which I think is a fine lens even on full frame...

I also have the DA 35 2.8 Limited which would be my recommendation if you are shooting APS-C...

But out of your two choices if I had the budget for it I'd go for the HD version.
Forum: Pentax SLR Lens Discussion 10-14-2020, 12:16 PM  
Pentax 35mm f/2.0 SMCP-FA AL or the new HD model?
Posted By jatrax
Replies: 23
Views: 1,184
I would not put a lot of weight on those reviews. Optically the lenses are identical. The difference is primarily the coating which by all reports improves things a bit. The older model's reviews go back years and people making those reviews fairly compared it to contemporary glass. It appears the reviews of the new model compare it more to modern glass. Which may not be all that fair. But these are subjective reviews, no real tests are made so they are just people's opinions based on their experience and views.


Between the two models I think there is no doubt that the new one is 'better' to some degree. But it is still a very old design and should not be compared to lenses like the new DFA 50mm.
Forum: Pentax SLR Lens Discussion 10-13-2020, 04:38 AM  
need advise on a good cheap lens for nature pictures.
Posted By Lowell Goudge
Replies: 24
Views: 1,509
I will start backwards with this post. Where I am now in a quest for a lens for birding and nature.

My current kit includes a K1 MK2 And a DA 560 / 5.6

Ok I get it , not cheap

So let’s look at the path of how I got there.

For many years, I shot a mix of two lenses, the K300/4 paired with an SMC F 1.7x converter, and a Sigma APO 70-200/2.8 EX and sigma 2x teleconverter.

Mixed in with these 2 options is a Tamron 200-500/5.6 adaptall

Overall, the sigma zoom (and note this lens is a film lens not one optimized for digital) Wins for overall sharpness, when it hits focus, But AF is not absolute, due to the backlash of screw drive and teleconverter. It also suffers a little from sharpness at extreme distance,

The K300/4 and AF converter is the lightest 500mm option you will ever get, at about 1.1 kilos total. Relatively sharp, it suffers a little from fringing but works well in good light otherwise.

The Tammy is very good, but does not suit my style of birding for walking. It is tripod bound, has terrible weight distribution from the tripod mount (due to the position of the mount, zooming ring and focus ring) And is awkward to use even on a monopod. It also suffers badly from purple fringing. So it needs the most post processing. Note it pairs well with 1.4 and 2 x TCs to get a ton of reach.

The op needs to decide what type of birding he wants to do, but I will offer my advise.

Get AutoFocus some how, because manual focus is too slow for all but great big birds like herons.

Get as long as you can. Remember birds like a heron are about 500mm to 1 meter tall and are easy to fill a frame, try the other end of the spectrum, warblers and finches, which are typically 100mm end to end, you are never close enough.

Get as fast as you can, because shooting small birds envariably has you working in the shadows, under foliage.

Be prepared to let the ISO go as high as you can accept. I let my K1 and K5 go to 10000. I’d Rather Accept the grain than give up a shot because I can’t shoot iso 100,

Consider a flash, it actually does not bother the birds that much. It also ads sharpness because the flash duration is in the order of microseconds and freezes the subject

If you go with your friend go light ( I know, not really possible)

Boiling all this down leads to something like an A300/4 plus AF converter, or a DA300/4 with 1.4 x converter. The reason I suggest the A300/4 Over the K300/4 that I have is the aperture control. It lets you use a flash.

You might get a sigma 500 mm zoom, there are several from the BIGMA 50-500] to a couple of different offerings in the 150/170 - 500 mm range. I have never used one personally so I can’t comment on their sharpness at 500mm

You might also look for the older sigma AF zooms 100-300/4 or 120-400/5.6 zooms used.or if budget permits the DFA150-450

If you can afford it get a lens with internal focusing motor, focus acquisition is more positive than screw drive.

Lastly don’t be afraid to crop.

You only need 3-4 MP to get a stunning photograph at A4 size and remember one simple formula

Image size = subject size x focal length / distance

Consider your APS-C sensor and try to fill it with a 100mm high finch. To fill the frame would require you to be about 2m away from the camera(front of the lens) with a 500 mm lens. It will never happen Sure a heron is simple but that’s not what the Op is going to shoot. As a result everything you do will be a crop.

I don’t know the sensor for the OP well enough to judge the trade of low light vs MP resolution. But likely he can crop to 1/10 of the frame area and still print and have a nice shot,

The biggest issue is his definition of cheap. Every option I have suggested, will set the OP back about $500-$2000 Canadian minimum. Except the DA560 of course. Which is more. While some suggest you can get by with 300 mm and less than $100 that will work fine for a backyard feeder maybe, but not for being out and about.
Forum: Pentax SLR Lens Discussion 10-12-2020, 12:50 PM  
need advise on a good cheap lens for nature pictures.
Posted By pepperberry farm
Replies: 24
Views: 1,509
for a cheap lens, the DA L 55-300mm zoom is about the best cheap zoom out there....
Forum: Pentax SLR Lens Discussion 10-12-2020, 12:09 PM  
need advise on a good cheap lens for nature pictures.
Posted By aslyfox
Replies: 24
Views: 1,509
welcome to the forums

you will find friendly members and a lot of knowledge here

as far as the 55-300mm Pentax lenses

be advised there are several versions and the newest the PLM will work with your camera body only with the proper update:




Read more at: Pentax K-S2 and HD Pentax-DA 55-300mm F4.5-6.3 ED PLM WR RE - Compatibility | PentaxForums.com

the older models would be cheaper
Forum: Pentax SLR Lens Discussion 10-12-2020, 11:49 AM  
need advise on a good cheap lens for nature pictures.
Posted By MossyRocks
Replies: 24
Views: 1,509
If you want a fast good and inexpensive 300mm spend some time looking for a Sigma 300mm F/4 APO Macro with the zen coating. It has a psuedo macro ability and will get to about 1:3 at a minimum focus distance of about 4 feet. I picked mine up for $130 (a steal of a deal) but if looking for one there are deals to be had since the zen lens barrel coating is not a loved feature. Other than that I would suggest sticking with what you have and really spending the time to master them. Wildlife photography requires practice and a lot of patience. I've heard that a lot of the best who do it use things like a big aperture 400/2.8 or 600/4, but that they spend a lot of time in the field waiting for the perfect shot.
Forum: Lens Clubs 09-13-2020, 05:43 AM  
The FA Limited Club
Posted By sundown
Replies: 11,136
Views: 1,901,035
FA43.A transcendental lens. It captures South-east European charm so complimentary haha :D

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