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Forum: General Photography 9 Hours Ago  
Resolution of Film vs Digital
Posted By stevebrot
Replies: 79
Views: 2,073
I stand corrected. This is something new for them and may explain the leisurely throughput compared to most mini-lab scanners, though 5.4 frames per minute auto-fed is hardly slow by film scanner standards.

BTW...the 17 Mpx for 645 is pixels, not sensor sites. Each pixel has 16-bit RGB. Pixels are sort of strange that way. The 645z's sensor actually has zero pixels,* although it is capable (through the image processor) of 50 Mpx output, with each pixel defined for 14-bit RGB. I know...picky, picky, but I strongly believe in sensels for capture.


Steve

* Pixels for capture purposes are a logical construct defining a point of a raster image. Pixels for display purposes, OTOH, while still an abstraction, have a physical reality. According to the Wikipedia, they are "the smallest controllable element of a picture represented on the screen."
Forum: Pentax Film SLR Discussion 9 Hours Ago  
Post your B&W Film shots
Posted By stevebrot
Replies: 6,854
Views: 691,338
Please tell me this bridge is retired...:eek::eek::eek:


Steve
Forum: General Photography 9 Hours Ago  
Resolution of Film vs Digital
Posted By stevebrot
Replies: 79
Views: 2,073
Found it: Vergleich unterschiedlicher Filmscanner-Typen: CMOS-Scanner, Flachbettscanner, Diascanner, virtuelle Trommelscanner



This model Noritsu is relatively new on the market and I have no experience with its output. Those are respectable numbers. At 4600 dpi the effective pixel count should be quite high. Noritsu claims 30 Mpx from 35mm. Why the Noritsu literature only says 17 Mpx for a 645 frame is a puzzle, however. At $10,000, I would probably opt for a used Nikon 9000 ED.


Steve
Forum: General Photography 9 Hours Ago  
Resolution of Film vs Digital
Posted By stevebrot
Replies: 79
Views: 2,073
The Noritsu is a CCD device and captures the full frame at once.


Steve
Forum: General Photography 9 Hours Ago  
Resolution of Film vs Digital
Posted By stevebrot
Replies: 79
Views: 2,073
One could still buy one the last time I looked, but the hardware to support the capture as well as to process the image is a bit beyond normal financial means of mere mortals.


Steve
Forum: General Photography 9 Hours Ago  
Resolution of Film vs Digital
Posted By stevebrot
Replies: 79
Views: 2,073
I am sorry, but that scan resolution hardly challenges the medium (I scan at that level for proofs from 35mm) and is not representative of the detail capture capabilities of the film. Noritsu minilab scans are legendary for being...ummm...gutter quality, for lack of a better term, due to poor resolution and incredible sharpening artifact at default settings.

I can do an honest (and much cleaner that the Noritsu) 2300 dpi (91 lp/mm) with my Epson V700 to yield a 3200x1143 scan (36.6 Mpx) in terms of raw resolution from a 645 negative and better scanners can double that (say 72 Mpx) , but that still says nothing about the capture resolution.

It is invalid to compare detail capture based on pixel counts. Film has no pixels and there is no way to imbue it with such.

(BTW...can you provide a link for the scandig reference? They have nothing about Noritsu on their Web site(s)? My experience is that Noritsu scans are only good to about 20 lp/mm.)


Steve
Forum: Pentax SLR Lens Discussion 10 Hours Ago  
K-1 won't fire with new FA 43 Limited
Posted By stevebrot
Replies: 10
Views: 391
Menu C4/#26, "Using Aperture Ring" (See user guide, p109)

The shutter release is disabled unless the "A" contact on the mount is detected. This only happens with the aperture ring in the "A" position or with lenses lacking an aperture ring. Changing the setting above to "enable" frees the camera to use lenses where body control of aperture is not possible. Why this is regulated in the first place with a default to "disable" is a puzzle.


Steve
Forum: Pentax Camera and Field Accessories 1 Day Ago  
Looking for a light but sturdy tripod
Posted By stevebrot
Replies: 16
Views: 413
I have been using a set of Slik Pro 330 DX legs with a Manfrotto mini ballhead for several years now for travel and hiking and have been very happy with the kit. There is also the Slik Pro 340 DX for a few dollars more if a four section leg works better (more compact). Aluminum-Magnesium-Titanium alloy. Pricing for legs only is still under $80 USD and similar to when I did this blog post for hinman...

Hin's Photo Corner: The Magic Tripod


Steve
Forum: Pentax DSLR Discussion 1 Day Ago  
Pentax K-30 non precise sides focus points
Posted By stevebrot
Replies: 11
Views: 261
I don't believe any on the K-30 are f/2.8 sensitive. IIRC, the entire system is f/5.6 sensitive.


Steve
Forum: Pentax DSLR Discussion 1 Day Ago  
Pentax K-30 non precise sides focus points
Posted By stevebrot
Replies: 11
Views: 261
Yes, it is hard to figure out from published specifications and user manuals how the features translate in actual use. :(



What he said ^ ^ ^

I have shot with the K-30/K-50 and found it to be a pleasant experience. My regular camera is a K-3 and while its AF is much more sophisticated, I tend to not use the side points.


Steve
Forum: Pentax News and Rumors 1 Day Ago  
Image Sync 2.0
Posted By stevebrot
Replies: 10
Views: 722
Danke

Both do read like there is a new app coming, though one wonders if it might be limited to the K-1 II.


Steve
Forum: Pentax Film SLR Discussion 1 Day Ago  
Thinking about getting a film SLR. Suggestions? Requirements within.
Posted By stevebrot
Replies: 23
Views: 472
The LCD "needle" on the XR7 works well, but can be hard to see in dim light. The flip side is that the XR7 is extremely easy on battery life, due in part to the display.

The viewfinder on the XR-2s is a virtual twin to that on the Pentax KX and very clear even in dim light. My only complaint is that unlike the KX, moving needle position in manual mode requires continous half-press to stay active. The XR7s meter and "needle" stay active on a timer (4 minutes?) so one just forgets about them once activated.

I have a mild preference for the XR-2s display, though sort of mentally shrug at the question. :)


Steve
Forum: Pentax Film SLR Discussion 1 Day Ago  
Thinking about getting a film SLR. Suggestions? Requirements within.
Posted By stevebrot
Replies: 23
Views: 472
The two are essentially equivalent except:
  • CdS meter on the XR-2s vs. SPD on the XR7 (SPD is more sensitive in low light and faster)

  • Both have full-information viewfinders, though the XR7 is a little bigger/brighter

  • XR7 viewfinder shows exposure comp status (on/off), exposure lock status, and low battery. XR-2s shows low battery when battery check is pushed.

  • The self-timers on the XR-2s are almost universally broken at the switch due to stiff mechanism. The XR7's is electronic.

  • XR7 is smaller/lighter

  • XR-2s manual shutter speeds: 4s - 1/1000s + B + X

  • XR7 manual shutter speeds: 16s - 1/1000s + B + X

  • Aperture priority AE shutter ranges are the same as the manual ranges for each camera

  • XR7 has AE lock (important if subject is backlit and/or off-center and other stuff...I use this feature a lot)

  • Standard threaded cable release fitting on shutter button

  • Flash dedication with compatible flash on XR7 includes auto 1/125s in AE and flash-ready indicator, while XR-2s only supports flash-ready.


Shared features:
  • Both shutter speed and aperture are visible in viewfinder

  • Traditional controls

  • Aperture-priority auto-exposure with full support for metered manual

  • ISO 12-3200

  • +/- 2 stops exposure compensation

  • Hot shoe and dedicated flash (such as it is) with compatible units

  • Flash sync at 1/125s and slower

  • PC flash port

  • Electronic Copal metal shutter (camera is battery dependent)

  • Pentax-style magic fingers film take-up spool

  • Accept powered winder

  • Compatible with all K-mount lenses having an aperture ring



Steve
Forum: Pentax Film SLR Discussion 1 Day Ago  
Thinking about getting a film SLR. Suggestions? Requirements within.
Posted By stevebrot
Replies: 23
Views: 472
Ricoh XR7 or Ricoh XR-2/XR-2s

Both are pictured below with winders attached and in company with the Pentax Super Program.



I prefer either of the Ricohs over the Super Program and suggest that the winders are a waste of money unless one REALLY wants one. The XR7 is a compact SLR and close in size to the Super Program and Pentax ME Super. The XR-2s is a little larger and almost identical in dimensions to the Pentax KX film camera. My first XR7 was purchased new in 1982 and would still be going strong except for an unfortunate accident with a defective lens in 2008. Its replacement is pictured above. I love the XR7 (it is a sweet camera in-hand), but consider the XR-2s my go-to 35mm SLR. It is pretty bulletproof. In terms of total flexibility, the XR7 wins.


Steve
Forum: Troubleshooting and Beginner Help 1 Day Ago  
manual for Pentax flash model AF-360FGZ Zoom
Posted By stevebrot
Replies: 3
Views: 154
Welcome to the Pentax Forums!

The manual is available for download free from Ricoh at the link below. Scroll down and click on "Accessories"

Operation Manuals Download : Support & Service | RICOH IMAGING


Steve
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Tamron 70-210 f4 - Nikon and Canon Only - any rumor of pentax rebadge?
Posted By stevebrot
Replies: 13
Views: 493
DA* at present.

Ricoh/Pentax says it is not suitable for FF and it does vignette on that format, but some forum users have made it work by modifying or removing an internal baffle.


Steve
Forum: Pentax SLR Lens Discussion 2 Days Ago  
200mm f2?
Posted By stevebrot
Replies: 21
Views: 828
Nikon and Canon are the sole players in that space. :(

$$$$$


Steve
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Edge failure on the 28mm F/3.5 M42 mount
Posted By stevebrot
Replies: 14
Views: 407
Sorry the ST 28/3.5 v2 did not past muster on your K-5II. I shoot with a K-3 and will spend some time with my copy. If I find it delivers at 24 Mpx, I will post some samples, including full resolution crops, on a separate thread. If you get a chance, you might want to add your experience as a review.


Steve
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Tamron 70-210 f4 - Nikon and Canon Only - any rumor of pentax rebadge?
Posted By stevebrot
Replies: 13
Views: 493
...or perhaps (pretty please!) Tamron could simply add a K-mount to this one ;)


Steve
Forum: Pentax SLR Lens Discussion 2 Days Ago  
Tamron 70-210 f4 - Nikon and Canon Only - any rumor of pentax rebadge?
Posted By stevebrot
Replies: 13
Views: 493
A mid-range FF 70-210/4 would be much appreciated, that is for sure. I have the Pentax-A 70-120/4 and if Pentax could develop similar performance at a moderate price as a D FA, that would be grand.

Here is a link to the PetaPixel announcement. It looks like a sweet lens though the price point remains unknown. and the announced price point of $800 USD is highly attractive.

Tamron Unveils 28-75mm f/2.8 for Sony, 70-210mm f/4 for Canon/Nikon


Steve
Forum: General Talk 2 Days Ago  
Iím done with PentaxForums
Posted By stevebrot
Replies: 82
Views: 2,496
Yep...I remember when we were all simply thrilled to have such an incredible tool and helpful folk to lend their experience to help us grow in our skills, even when the camera might not cooperate.


Steve
Forum: General Talk 2 Days Ago  
Iím done with PentaxForums
Posted By stevebrot
Replies: 82
Views: 2,496
+1 again.

It used to be that it was enough to avoid the rumors area and threads with obvious trolls in the titles, but lately there has been a escalating trend towards off-topic hijacks, thread-poisoning, and persistent off-topic whinging... in the core forums.

Oh, well...perhaps the contagion will abate once we have a K-3 II successor in sight.


Steve
Forum: Pentax DSLR Discussion 2 Days Ago  
K3 bad batches?
Posted By stevebrot
Replies: 10
Views: 562
The only thing that comes to my mind is the runaway mirror syndrome which was addressed under warranty and which affected a fair number of early bodies* made before late summer 2014, though the problem was hardly universal. Firmware v1.11 included a feature to address the symptoms without actually correcting the underlying timing issue. FWIW, I have never read a report describing just what the camera actually does when the feature is invoked.

FWIW, my K-3 has never showed the problem; my shutter count is just shy of 23,000 with original battery.


Steve

* There was quite a stir at the time. Incidence was hard to pin down, but common enough that a few users had the problem on more than one body. The problem seemed to be associated with heavy/frequent interval shooting, though not exclusively.
Forum: Pentax Camera and Field Accessories 2 Days Ago  
Camera & Lens-Adapter for HAMA/Spiratone/Kenlock Shift/Swing/Tilt-Bellow
Posted By stevebrot
Replies: 8
Views: 252
The question I would have is whether one has a lens with large enough image circle to provide adequate coverage to actually use the movements. A large format lens of about 150mm focal length designed for 2 1/4x 3 1/4 might fit the ticket.


Steve
Forum: Repairs and Warranty Service 2 Days Ago  
Advice requested - Send camera to factory or back to me from Advance Camera?
Posted By stevebrot
Replies: 5
Views: 256
It is likely that the cost to repair would be higher than the cost to replace. With any luck, Advance will simply opt to replace.


Steve
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