Pentax 67
#1
Posted 05 April 2008 - 01:35 PM
I have a Tec 140 coming, and the field flattener is designed to have the Pentax 67 thread onto it. Here is my first question. The Pentax uses bayonet lugs to mount the lenses. There must be an adapter which is between the camera and the flattener? Anyone know who makes these adapters or where I can find one?
A question regarding lenses. Which fixed lens would be good for wide field shots eg: Milky Way - NGC7000 etc. I understand there is a difference in what I would see between this format and a 35mm both using the same lens eg: 70mm.
I still plan to use the 35mm. I have a Tamron 300mm for my OM1 which should be good for those tighter shots. I have the STI stiletto focuser for this camera. I guess an adapter will be next to focus the Pentax.
I have a chance to pick up a very good condition 67 body with the following features. Any comments on it?
Mirror Lock Up function
Equipped with standard pentaprism finder
Exposure counter: automatic re-set
Film Advance: one-stroke
Shutter: focal plane shutter w/rubberized silk blinds
Shutter Speeds: 1/1000th to 1 sec. plus B & X
Flash Sync: 1/30th sec.
Power Source: one 6V EverReady 544 or PX28 battery
Ground Glass: combination of microprism centre and fine ground glass
Instant Return Mirror: swing back and swing up type
Lens Mount: special dual bayonet - inside for lenses from 35mm to 300mm, outside for longer telephoto lenses
#2
Posted 05 April 2008 - 09:52 PM
Have fun.
Suk
#3
Posted 07 April 2008 - 05:47 AM
Jim
#4
Posted 07 April 2008 - 11:13 AM
#5
Posted 07 April 2008 - 12:50 PM
Plus it looks so different that people almost always give you some level of respect for having it.
#6
Posted 08 April 2008 - 09:47 PM
I have a Rollei TLR and I love the thing, it is such a joy to use, for astro as well as terrestrial photography.
Plus it looks so different that people almost always give you some level of respect for having it.
I know what you mean, whenever I have one of my medium format or my speed graphic at a car show, railroad museum,etc. People think I'm a professional! They don't think that way about those who have a digital!
Now,I am not sure how it would do with Astrophotography, but yesterday, I ordered a Mamiya RB67 Pro-s with the 180 lens.The 180 would be great for portraits at least.
#7
Posted 09 April 2008 - 12:58 PM
I still plan to use the 35mm. I have a Tamron 300mm for my OM1 which should be good for those tighter shots.
Well if you use 300mm on 6x7 format it's easy to crop the desired area to give you the FOV of the smaller 35mm format. 300mm is always 300mm. It's the field of view that's different.
#8
Posted 10 April 2008 - 07:42 PM
This means wide field with a lens piggy back, and prime focus. I would guess that a 2x adapter on the front of the Pentax would work like a barlow for prime?
Some of the later 67 have mechanical shutters, but is fired with electronics? Should I be looking at a specific year - or will any one of them do the job. The later ones are lighter, but more electronics.
I'm convinced about going the medium format route. Now I just need to regroup the finances. The new Tec 140 just arrived, and I'm still recovering.
#9
Posted 10 April 2008 - 07:42 PM
This means wide field with a lens piggy back, and prime focus. I would guess that a 2x adapter on the front of the Pentax would work like a barlow for prime?
Some of the later 67 have mechanical shutters, but is fired with electronics? Should I be looking at a specific year - or will any one of them do the job. The later ones are lighter, but more electronics.
I'm convinced about going the medium format route. Now I just need to regroup the finances. The new Tec 140 just arrived, and I'm still recovering.
#10
Posted 10 April 2008 - 08:09 PM
The mirror lockup feature is not available on the oldest models (it came out in 1969). There is a way to keep the shutter open without a battery. I made a simple jig to hold the safety button in with a cable release. No problem at all, expose all night long. I posted this mod last summer on this forum.
The lenses are great. The 165mm f/2.8 is superb. Can be used wide open, but I stop down to reduce vignetting. I am working on getting a 55mm f/4 which is perhaps the best. The 105mm is a very good "normal" lens.
I've been very happy with medium format. It is a great leap from 35mm. Currently E200 and Provia 100F are available in 120. You might find Provia 400F in a few places, but it is all but gone. The newer 400X is available in 120 and has good blue sensitivity, but lacks very good reds. Keep E200 in your camera unless your shooting star trails, then opt for Provia 100F. Let us know how you make out.
Clear Skies
#11
Posted 11 April 2008 - 05:13 PM
#12
Posted 11 April 2008 - 06:37 PM
#13
Posted 11 April 2008 - 10:50 PM
#14
Posted 12 April 2008 - 06:02 AM
#15
Posted 12 April 2008 - 11:02 PM
#16
Posted 13 April 2008 - 06:09 AM
#17
Posted 13 April 2008 - 01:15 PM
#18
Posted 14 April 2008 - 06:31 PM
#19
Posted 15 April 2008 - 02:15 PM
Unfortunately, my wife did not know about the second deal. I went to bed, and she put in the low bid. I get up - day off - she's gone to work. Hours later I open my email to find I had won the bid. Talk about a surprise. This time she has some explaining to do.
Now I might have to buy both cameras? Anybody want a couple of OM1's?
Any idea how good the 135 Macro lens will be for astro photos? They say it makes a good portrait lens. The 90 mm should be good, but I would rather have a 55.
Any idea how good the 45 mm lens is for astro?
#20
Posted 15 April 2008 - 05:39 PM
#21
Posted 15 April 2008 - 05:45 PM
http://members.aol.c...lucci/p67ss.htm
#22
Posted 16 April 2008 - 12:46 AM
I'm selling off one of my extra OM-1's - the cash will come in handy - to buy more stuff.
My daughters happen to be in NYC and will pick up my camera. They are back home this Friday. Oh joy. Need to get an ADM piggy back adapter. The summer milky way is around the corner, plus the usual suspects.
Did I mention - Oh Joy!
#23
Posted 16 April 2008 - 06:47 AM
My 75mm is good, but not very sharp at the edges. The 150mm is really good, though!
#24
Posted 16 April 2008 - 09:34 AM
Igor
#25
Posted 16 April 2008 - 09:50 PM
What type of scope and mounting rings? ADM has a Bogen head or a fixed heavy duty type but is made for the Losmandy DUP plate - or Vixen. Have a look.
www.astro.premcom.com/ADM
My Pentax arrives Friday - a 90 and a 135M for lenses - a manual. I am really anxious to get going on these wide field shots.
I have a 15 minute drive to my golf course, and I go there at night for astronomy. It's on the west side of the city, and very dark surrounded by countryside. Great view of the south and west. I'm thinking of getting ADM to make me a cross bar with 3 saddle plates. This will mount on my EQ6 so that the bar sits sideways, and saddles point forward.
I will mount the Pentax on one side for wide field. My Equinox 80 with OM1 with 300 Tamron lens, or guide with it. The centre will hold my 80 F11 guide scope.
I like the idea of being able to use the Equinox which is 500 mm to focus on areas within the milky way - like the Eagle nebula etc. The Pentax will do the BIG picture. I've got my eye on a 45mm lens for that purpose.