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Forum: Pentax Medium Format 09-14-2013, 12:05 PM  
6x7 90-180 on 645D
Posted By klewish
Replies: 8
Views: 1,653
I have never tried using a 95mm filter on them. If you're stopping down the lens some, it might work. Someone else may know for sure.
Forum: Pentax Medium Format 09-14-2013, 07:09 AM  
6x7 90-180 on 645D
Posted By klewish
Replies: 8
Views: 1,653
I have both 67 zooms and use them regularly on my 645D. They are both excellent lenses with fantastic build quality. In fact they strike me a collectors items just in terms of their build and physical appearance. I'm generally a landscape shooter so I use them mostly within the f8 - f32. For image quality the 55-100 is without a doubt the best zoom I've ever used, sharp throughout the entire range. The 90-180 is just a little softer, but still excellent. The 90 has an f45 stop but I've never been able to use it effectively--too much diffraction. Each lens has a 105mm front element which makes filters expensive and they are somewhat prone to flare, so I usually shield the front element from sun. I really like the color rendering of the lenses as well, which, compared with the new aero-brite coated lenses, is more subdued and slightly less vibrant, which I like. Prices for these lenses have been coming down, as you noted--I think they are great buys. All metal lenses like this will never be made again. Another thing to consider is their size and weight, which is considerable. You can find samples for each lens on my flickr site.

Keith
Flickr: klewish's Photostream
Forum: Pentax Medium Format 07-22-2013, 11:48 PM  
645D Image review 1:1 pixel
Posted By klewish
Replies: 6
Views: 1,241
To set Quick zoom go to the Playback Display menu option. It's described on page 22 of the Reference manual.
Forum: Pentax Medium Format 03-22-2013, 01:42 PM  
67 to 645 Adapter question
Posted By klewish
Replies: 8
Views: 1,207
Ole,

A Fotodiox adapter does have coupling to the body through the two levers on the back of the adapter. Put the lens in Auto mode and you can focus with the lens wide open. The aperture will close to the f-stop that you select on the lens when the shutter is activated. I have several of these adapters and always use them in this way.

Keith
Forum: Pentax Medium Format 02-05-2013, 02:47 PM  
Fotodiox Pentax 67 Lens to P645 Camera adapter
Posted By klewish
Replies: 18
Views: 5,406
I have a couple Fotodiox adapters which I use on my 645D. With some of the 67 lenses the shiny inside surfaces of the adapter produced very noticeable flare in the center of the image. I solved this by spray painting the inside of the adapter with flat black paint. Otherwise, I agree that they are well made.
Forum: Pentax Medium Format 12-23-2012, 06:33 AM  
645D firmware 1.30 with SR support
Posted By klewish
Replies: 7
Views: 1,259
I just updated to firmware 1.30. It adds an entry to the end of the Custom menu. It appears as "37. Shake Reduction Options". There are two selections: 1) Activates SR at the moment of capture only (uses less power). 2) Activates SR while pressing the shutter release button halfway (uses more power).
Forum: Pentax Medium Format 12-20-2012, 06:13 PM  
Flaring issues with 645 lenses on K mount
Posted By klewish
Replies: 4
Views: 1,215
I've also seen this problem when using generic adapters. Applying flat black paint to any shiny surface on the interior of the adapter should eliminate the flare/haze.
Forum: Pentax Medium Format 11-23-2012, 08:07 AM  
Pentax 645D newbie questions
Posted By klewish
Replies: 18
Views: 2,858
If you're looking for razor thin deep of field you might also want to consider the 645 120 Macro. Wide open at f4 the dof is a couple of millimeters and the bokeh is creamy smooth.
Forum: Pentax SLR Lens Discussion 10-06-2012, 06:38 PM  
Which UWA prime for a trip to Venice...
Posted By klewish
Replies: 18
Views: 2,492
I was in Venice this past May and took the 21, 35, and 70 Ltds, a nice lightweight kit when used on a K5. The 21 was wide enough and I shot mostly with it. (To get St Marks and the Campanile in one shot with the 21 you have walk to the far end of the piazza and shoot in portrait orientation.) The 70 was great for getting details and shooting across the canals. In my opinion the 15 is too wide and creates too much spatial separation between near and far -- unless you want that effect.

You can find a few pictures here: Venice 2012 - a set on Flickr
Forum: Pentax Medium Format 10-06-2012, 04:36 AM  
Digital ready dinasours?
Posted By klewish
Replies: 10
Views: 1,413
I'm referring to the latest 67 version of the 55/4, not the earlier 6x7 version. It seems that the newer 67 lenses are generally superior to the 6x7 and Takamur versions of the same lens--or at least as good. Most can be purchased at very affordable prices and in my opinion are real bargains considering their build quality. Of course all are manual focus, but I actually enjoy that.
Forum: Pentax Medium Format 10-05-2012, 06:01 PM  
Digital ready dinasours?
Posted By klewish
Replies: 10
Views: 1,413
I use several 67 lenses on my 645D. The 45/4 has some CA in the corners that is easily fixed in Lightroom. The 55/4 is really outstanding, probably the best pentax lens at that focal length for the 645D. The 105/2.4 is sharp, fast, and focuses close. I recently picked up a copy of the 55-100/4.5 zoom and it's really impressive throughout the range; however it's also really heavy and prone to flare. Used carefully it can produce excellent results.
Forum: Pentax Medium Format 08-02-2012, 01:20 PM  
Manual Focus Lenses on 645D
Posted By klewish
Replies: 18
Views: 5,762
My experience with the A120 is that it's an excellent lens if used correctly. Wide open the DOF is incredibly narrow and will probably require focus stacking, depending on your subject and intent of course. Stopped down it's much easier to focus. I use mostly manual focus lenses on my 645D and rarely miss a shot due to focus, but I'm generally shooting landscapes in the f8-f16 range.
Forum: Pentax Medium Format 07-31-2012, 01:08 PM  
645D sensor cleaning options
Posted By klewish
Replies: 1
Views: 792
I've had my 645D for six months and cleaned it once during that time using the Pentax image sensor cleaning kit o-ick1 to clean dust that the in-camera dust removal function couldn't remove. It worked great for me.
Forum: Pentax Medium Format 06-27-2012, 01:09 PM  
Pentax 645 A150mm F/3.5 or FA 200mm with 645D?
Posted By klewish
Replies: 26
Views: 6,714
Forum: Pentax Medium Format 06-24-2012, 07:13 AM  
Pentax 645 A150mm F/3.5 or FA 200mm with 645D?
Posted By klewish
Replies: 26
Views: 6,714
I use both the A150 and the A200. Both are very good lenses, though my copy of the 200 is slightly more contrasty. Having said that I almost always carry the 150 because it's much smaller and lighter than the 200. The 150 is also a very good portrait lens, whereas the 200 is generally too long for portraiture. In the States good used copies of these lens can be had for less that $200. I love the build quality and feel of these older manual focus lenses--they were built to last. There are samples of each lens on my flickr site.

Pentax 645D - a set on Flickr

Keith
Forum: Pentax Medium Format 05-24-2012, 06:18 PM  
What kind of lenses do you use on your 645D?
Posted By klewish
Replies: 40
Views: 3,498
Following up on my post above, some samples of each lens can be found at:

Pentax 645D - a set on Flickr
Forum: Pentax Medium Format 05-24-2012, 06:10 PM  
What kind of lenses do you use on your 645D?
Posted By klewish
Replies: 40
Views: 3,498
I have an A 200 and while it is challenging to focus, mine is sharp across the frame with good color and contrast. I think it's slightly better than the A 150. The A 75mm is also a very good lens as is the A35mm. I have a copy of the A55mm which is fairly sharp across the frame but only when stopped down. I also shoot the 67 55mm (latest version) and the 67 105mm with adapters. The 67 55mm while really big and heavy has better color, sharpness, and contrast than either the A 55 or the D FA 55.
Forum: Photo Critique 04-27-2012, 04:02 PM  
Landscape Landscape Trials
Posted By klewish
Replies: 3
Views: 563
The last picture is the best in my opinion. It has interesting objects in the foreground, middle distance, and background. I like that you've shot it from an elevated position which creates a greater sense of depth. The picture looks a little over-sharp to my eye. There's also a large dust spec in the up right corner. The first picture would be better without the objects in the foreground (the building on the pier to the left and the railing to the right).
Forum: Pentax Medium Format 03-03-2012, 06:17 AM  
645d2
Posted By klewish
Replies: 55
Views: 7,904
I get about 2 seconds to instant review with histogram turned off. If you turn on histogram it's easily twice as long. I agree with your comments about the type of photography this camera is best suited for--a deliberate, contemplative style. Mine is always on a tripod. Given the amount of time I spend setting up the shot waiting 5 seconds to review is insignificant.

As for future features, I'd really appreciate Liveview as I seem to end up manually focusing more than half the time, and that's a challenge for my eyes, even with the excellent 645d OVF.
Forum: Pentax Medium Format 03-02-2012, 02:35 PM  
645d2
Posted By klewish
Replies: 55
Views: 7,904
With a class 10 card the delay between exposure and preview is about 2 seconds, maybe less, shooting raw and writing to a single card.
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