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Forum: General Photography
08-18-2020, 12:56 PM
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Thanks for topic. Attila email bounces. Emailed Klaus. Not reply yet.
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Forum: Troubleshooting and Beginner Help
07-12-2020, 01:09 PM
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Welcome Teddy13
Agree green is missing. Cause remains unknown. Maybe settings got bumped.
Check White Balance settings? Try resetting camera?
Hardware problem maybe Pentax Service can help.
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Forum: Site Suggestions and Help
07-30-2011, 05:04 AM
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Note butkus.org manuals while free to download, include a request for a donation "if you find the manual useful" Mr Butkus has done a lot of work to get them posted online...
There are some vintage ads & sales brochures (incluing a manual for YS Mounts) here |
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Forum: Pentax SLR Lens Discussion
12-24-2009, 11:35 AM
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except for the fact in this thread we are discussing a 40-year-old lens :)
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Forum: Pentax Camera and Field Accessories
11-24-2010, 09:04 PM
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Use a hood instead of filter for protection.
UV filters DO help with excessive UV at high altitudes. Next time you are there, watch the exposure meter change when UV filter is added or removed.
UV filters DO reduce atmospheric haze in some situations, such as long-distance telephoto -- the 'haze' in this case is invisible to the eye, but shows on film and in images, i.e. film and sensor are sensitive to UV, showing atmospheric haze the eye does not see.
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Forum: Troubleshooting and Beginner Help
08-17-2011, 01:37 AM
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In my experience blowers remove the dirt an dust permanently. I had heck of time with used camera getting sensor and chamber cleared of dust, but once I did, both have remained clear and free of dust using only occasional blowing, for the past three years. No wet cleaning necessary. And I change lenses frequently, often in dusty conditions (outdoors).
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Forum: Pentax Medium Format
07-08-2011, 07:18 PM
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?! huh?
Tongue firmly in cheek (I hope Adam doesn't mind some fun at his expense!):
"I'm delighted to be in possession of both the Pentax 6x7 as well as the Pentax Spotmatic II this week, and we'll soon be conducting an in-depth comparison between the two..."
or perhaps:
"I'm delighted to be in possession of both the Canon 5Dc (FF) as well as the Canon XT/350D (APS-C) this week, and we'll soon be conducting an in-depth comparison between the two..."
Comparing a FF 24x36 camera with a medium format camera?
Okay, "focus on pro features - and which is better for what purposes", I'm guessing this is a features-only comparison?
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Forum: Pentax SLR Lens Discussion
06-11-2011, 11:47 AM
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What is a zoom lens? Are they any good? At what?
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Forum: Pentax SLR Lens Discussion
05-14-2011, 09:37 AM
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Let us see it?
edit: :o images load slow on dialup!
Could be oil fraction mist deposit from helicoid grease over heating...any on diaphragm blades?...an experienced person should be able to clean easy, key word "experienced" -- this is a valuable lens, worthy of professional restoration. Or, just use it -- any visible effect is very unlikely, even for pixel peepers!
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Forum: Pentax SLR Lens Discussion
03-26-2011, 04:33 PM
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"Is a full frame lens on an aps-c, a negative?"
Generally, since the aps-c sensor only sees the central portion of the image circle, performance is better. Due to the smaller physical size of aps-c sensor, diffraction effects will be seen at smaller f/# than on full frame.
A negative? Yes, imho, because I have FF digital body (5Dc) and film cameras (Spotmatics, of course!) :lol: I will probably get flamed for this: aps-c cameras are mere toys compared to FF! :) No flame please unless you have FF body!
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Forum: Pentax SLR Lens Discussion
03-06-2011, 07:15 AM
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http://www.micro-tools.com/ has lens tools...I've also seen kits on the 'baY.
well-lit work area
non-powdered surgical gloves or finger tips
tray such as cookie baking sheet, with soft pad covering bottom -- pad prevents dropping parts from bouncing, sides of tray keep parts from rolling off)
small cups/dishes for holding parts & soaking parts in cleaner
screwdrivers & knife-sharpening stone to grind tips to exact screw-fit -- cheap $1-2 sets work great, or get a Wiha set that lasts lifetime -- for slotted, cross-tip, phillips screws, and miniature hex set.
lens spanner (purhase, homemade, substitute old calipers or compass or pliers with re-ground tips)
lens ring removal tools (purchase, use correct size old washtub stopper or foot from crutches, or a dental dam & fingers)
lighter fluid for cleaning lens body and stubborn lens deposits
castile soap for cleaning lens body and stubborn lens deposits
toothbrush
Eclipse (or reagent grade methanol) Lens Cleaning fluid
Pec-pads (clean-room grade microfiber cloths)
optional: lens suction cups, used to pick up & position lens elements
helical grease
touch-up paint
Basic techniques to repair lenses (and cameras)::Manual Focus Lenses |
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Forum: Pentax SLR Lens Discussion
11-25-2010, 08:39 AM
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Excellent point. Bravo bdery!
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Forum: Pentax SLR Lens Discussion
11-18-2010, 08:18 AM
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Forum: Pentax SLR Lens Discussion
09-18-2010, 09:28 PM
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Let's see...how good was the deal greatly depends on condition, and which versions are those lenses.
A clean Spotmatic in good shape -- meter works, shutter speeds reasonably accurate, light seals and mirror bumper are inexpensive and easy to replace -- goes for $25-$35, up to $50 for 'mint' tested good condition.
The Super 3.5/135 depends on version. Version 1, serial number begins with '1', with mark-free clean optics and snappy clean diaphragm is worth $60-75. Later version only $30-$40.
The 3.5/28 Super with optics & diaphragm in great condition, $40.
The TC not much, a few dollars.
The 13mm cine lens is probably usable reversed as macro lens, not worth much. No use for the 1.5". Maybe $20 for both. I'm not sure if these might be more valuable to m4/3 crowd.
Don't know about the flash. Does it work? I don't see a flash head. (edit: I see the head now)
The Opticam maybe $10.
Add it up...
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Forum: Pentax SLR Lens Discussion
09-04-2010, 02:38 AM
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Correct and right!
The M42 Super-Multi-Coated TAKUMAR 135mm f2.5 and M42 Super-Multi-Coated TAKUMAR 135mm f3.5 are designed for different purposes. The 2.5 has softer focus and slightly less contrast wide open, excellent for portraits, whereas the Super-Multi-Coated TAKUMAR 135mm f3.5 is sharp and high contrast from wide open.
The M42 Super-Multi-Coated TAKUMAR 135mm f2.5 version I has different optical formula than version II, not as sharp. Opinions vary which is better, imho due to personal taste and usage.
There are different versions of Super-TAKUMAR 135mm f3.5, with different optical formulas and rendering qualities. Personally I like the early version best, those with serial numbers beginning with '1'.
Which is to say that all the Takumar versions are great, except the entire later bayonet non-SMC 'Takumar' line which imho was the idea of greedy marketing attempt to capitalize on excellent reputation of earlier M42 Super, S-M-C, and bayonet SMC Takumars.
PS I have all these lenses (serious LBA :D), however my photo examples pale considerably compared to others. There are plenty of excellent examples online already.
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