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Forum: Pentax Medium Format 4 Hours Ago  
Post your medium format photos!
Posted By desertscape
Replies: 11,025
Views: 1,777,323
Northern border of Banff N.P. Canada, 7PM, late September.
Forum: Pentax Medium Format 6 Days Ago  
Post your medium format photos!
Posted By desertscape
Replies: 11,025
Views: 1,777,323
Matt-- Nice low sun capture of fall colors. Nice orange glow.
Forum: Pentax Medium Format 10-05-2017, 05:38 PM  
does your 300mm ed 67 lens have a hard stop infinity focus?
Posted By desertscape
Replies: 6
Views: 322
The other reason why these long lenses focus past infinity is to accommodate the use of rear filters. A glass plate (filter) put into a converging light beam will offset the focus rearward, requiring a slight adjustment.
Forum: Pentax Medium Format 10-05-2017, 11:18 AM  
does your 300mm ed 67 lens have a hard stop infinity focus?
Posted By desertscape
Replies: 6
Views: 322
Yes, the 300EDIF focuses past infinity so you must be very careful when using it for infinity shots. The 600mm is like this also.
Forum: Pentax Medium Format 09-30-2017, 01:15 PM  
P67 105mm for a bargain, but small scratch on rear element
Posted By desertscape
Replies: 25
Views: 987
Yes it does. Forgot about that one. The zoom has the advantage of having many focal lengths with f/32. I use it at 65mm and 90mm sometimes.
Forum: Pentax Medium Format 09-29-2017, 03:52 PM  
P67 105mm for a bargain, but small scratch on rear element
Posted By desertscape
Replies: 25
Views: 987
I would say that I shoot the zoom at f/19 most often but use f/22 quite a bit also. I do use f/32 when the scene absolutely demands it. Its f/32 DOF sets it apart from the other wide lenses in the lineup. I mostly shoot ISO 50 film.
Forum: Pentax Medium Format 09-27-2017, 03:13 PM  
P67 105mm for a bargain, but small scratch on rear element
Posted By desertscape
Replies: 25
Views: 987
Yes, I no longer own the 55 or 75 f/4.5, as I needed the extra DOF offered by the 55-100 zoom for landscape work.
Forum: Pentax Medium Format 09-08-2017, 04:34 PM  
6x7 battery issue
Posted By desertscape
Replies: 9
Views: 396
Your problem is fairly common. Many of the well used bodies do this. I sent mine to Pentax when they used to repair the 67s and they were able to fix it. I doubt your battery is the problem. Sounds like it is time for the repair shop.
Forum: Pentax Medium Format 09-04-2017, 04:04 PM  
Post your medium format photos!
Posted By desertscape
Replies: 11,025
Views: 1,777,323
Excellent idea and capture.
Forum: Pentax Medium Format 09-02-2017, 03:36 PM  
What is the sharpest manual lens for pentax 67 / 645 ?
Posted By desertscape
Replies: 13
Views: 859
I was referring to the latest 200, that's why I said Pentax and not Takumar. Pentax abandoned the 4 element triplet variant (Takumar) in favor of a 5 element Ernostar design in the Pentax.
Forum: Pentax Medium Format 09-01-2017, 11:27 AM  
What is the sharpest manual lens for pentax 67 / 645 ?
Posted By desertscape
Replies: 13
Views: 859
The 165LS for the 6x7 is quite sharp, as is the 200 Pentax. On the long end, the 300 EDIF is one of the best. Possibly sharper than these is the 75 Takumar but it might be too wide for your application.
Forum: Pentax Medium Format 08-24-2017, 12:42 PM  
Post your medium format photos!
Posted By desertscape
Replies: 11,025
Views: 1,777,323
That's a different take on the eclipse Tuco. I like it.
Forum: Pentax Medium Format 08-12-2017, 01:22 PM  
Pentax 6X7 camera shake
Posted By desertscape
Replies: 27
Views: 7,675
Agree that technique is critical for hand held shooting. With tripod shooting, there is a proven shutter problem with certain lenses and certain speeds. The 300 and 600 Takumars are notorious for being affected by the shutter in the 1/2 to 1/15 second range.
Forum: Pentax Medium Format 08-02-2017, 02:52 PM  
Proper portrait lens purchase
Posted By desertscape
Replies: 46
Views: 2,902
The 55-100 zoom can hold its own against the 55mm latest and 75 Takumar. All 3 are similar in performance. That f/32 on the zoom is very important in landscape work. The 90-180 zoom is not in the same league as the 55-100. Although not a soft lens, it just cannot compete with the better primes. Its f/45 stop seems to do better with macro work than landscapes. Just too much diffraction. Yes, the zooms are more delicate than the primes.

---------- Post added 08-02-2017 at 03:14 PM ----------



Shooters use the 200 Pentax with the 1.4X to save money. The combination has similar performance to the 300 EDIF. Since the 200 is not a telephoto design, putting a negative group (TC) behind it doesn't seem to degrade the image. The combination does not seem to be as susceptible as the 300 Takumar is to shutter shake.
Forum: Pentax Medium Format 08-01-2017, 11:32 AM  
Pentax 67 Cable Release Problem
Posted By desertscape
Replies: 7
Views: 559
Does the "B" setting problem occur when using the cable release and also when using the shutter button with your finger to activate it? It could be a shutter button issue. The shutter can be activated while the shutter button is locked using a cable release.
Forum: Pentax Medium Format 07-28-2017, 01:33 PM  
Pentax 6x7 SMC Takumar 1:4/600 Question
Posted By desertscape
Replies: 8
Views: 532
I own one of these (600mm) and have shot it extensively. It uses conventional optical glass and is corrected for 3 colors ( probably red, blue and yellow) as seen by the triplet front section. It suffers quite a bit from spherochromatism, where colors at the optic margins do not focus at the same plane as those entering from the more central zones. In other words it fringes badly wide open. Stopped down to f/13-f/32, it performs very well.
Forum: Pentax Medium Format 07-12-2017, 12:01 PM  
Use of Polarized Filters for Medium Format Landscapes
Posted By desertscape
Replies: 13
Views: 837
I use a polarizer on shots as follows-
-- seascapes where too much reflection is coming off the water.
-- mountain landscapes of distant subjects where haze is present.
-- in landscapes where highly reflective leaves are causing glare.
-- to darken a pale sky where I feel it is too light.

But remember, just because you want to polarize a scene, doesn't mean you should always fully polarize it. This point is particularly important with digital shooting. Film is more forgiving with polarizing than digital.
Forum: Pentax Medium Format 06-29-2017, 01:58 PM  
Pentax 6x7 Wind Lever Doesn't Stop & Frame Counter Resets to 0
Posted By desertscape
Replies: 1
Views: 338
You might try turning the knurled button in the center of the frame counter back to the first dot with a pencil eraser. I have never tried this so not sure if that will work. That same button is used to fire the camera without film, by turning it with the back open, then closing it with the counter on frame 1.
Forum: Pentax Medium Format 06-15-2017, 11:26 AM  
Another Pentax 67 hiccup?
Posted By desertscape
Replies: 10
Views: 612
Very funny innuendo! Not many people would know what you're talking about.... kind of like Aussie slang.
Forum: Pentax Medium Format 06-14-2017, 01:23 PM  
Another Pentax 67 hiccup?
Posted By desertscape
Replies: 10
Views: 612
These cameras will occasionally underexpose when the battery is low.
Forum: Pentax Medium Format 06-02-2017, 04:27 PM  
Post your medium format photos!
Posted By desertscape
Replies: 11,025
Views: 1,777,323
Excellent radio telescope shot Mike. Nice contrast in the sky.
Forum: Pentax Medium Format 05-26-2017, 01:45 PM  
What is your 67 system lineup and why?
Posted By desertscape
Replies: 41
Views: 2,243
I would start out with Provia 100F as it is moderately saturated without being offensive. It has a super fine grain so it can be enlarged greatly. Velvia 100 has problems in landscape work due to it shifting the color palette to the red end of the spectrum. It does well for fall colors and lightning shots tho. I don't like how it scans. Provia 400X works well if you need the speed, as when wind is causing motion problems in the scene. It is very fine grained for a 400 film. Velvia 50 works well on scenes that are not saturated. Saturated scenes can be a problem. It is fine grained and scans well.
Forum: Pentax Medium Format 05-20-2017, 11:27 AM  
What is your 67 system lineup and why?
Posted By desertscape
Replies: 41
Views: 2,243
The simple answer is to use the DOF scale on the lens. But beware, these scales are not conservative so a bit of adjustment is needed. If for example you have the lens set at f/32 and you set the depth using the DOF scale, there is likely to be a bit of softness near and far. It is best to back up slightly from the close focus indicated on your scale and move your infinity mark to f/22. Each lens varies on how much you need to shift the infinity mark away from the indicated DOF scale marks. The 45mm needs a small adjustment, the 300 Takumar needs a lot. The 200 Pentax needs a small adjustment. In other words the DOF scales vary in accuracy.
Forum: Pentax Medium Format 05-12-2017, 01:40 PM  
Question about 600mm A-star lens with 645z
Posted By desertscape
Replies: 14
Views: 1,479
Both of these lenses are modern designs using low dispersion glass. They are both probably corrected for 3 colors and have very low tertiary spectrum and low spherochromatism. I have not compared the two but it is safe to say that they have similar performance.
Forum: Pentax Medium Format 05-09-2017, 02:16 PM  
Light seals originally on the Pentax 6x7
Posted By desertscape
Replies: 9
Views: 812
The early Honeywell/Asahi cameras without MLU had the rear seals.
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