If this is your first visit, be sure to check out the FAQ by clicking the link above. You may have to register before you can post: click the register link above to proceed. To start viewing messages, select the forum that you want to visit from the selection below. |
|
|
|
Thread Tools | Display Modes |
#1
|
|||
|
|||
Need Pentax 67 lens info
I am looking for lenses to fit a Pentax 67 II.
I understand that there are some "new" designs and some "old" designs. How does one tell them apart ? I understand the "new" designs are generally sharper than the "old" ones. Is there somewhere on the web (not pentax.com) that has info on this subject ? Thanks |
#2
|
|||
|
|||
I am looking for lenses to fit a Pentax 67 II.
I understand that there are some "new" designs and some "old" designs. How does one tell them apart ? I understand the "new" designs are generally sharper than the "old" ones. Is there somewhere on the web (not pentax.com) that has info on this subject ? I don't think your understanding that the "new" designs are sharper than the "old" designs is necessarily correct. Some of the changes are primarily cosmetic (e.g. metal collar vs. rubber collar). Other changes, as in the 45mm and/or 55mm lenses, are complete redesigns to make the newer lens smaller and more convenient to use but not necessarily sharper. Still other changes, as in the macro lenses, are improvement in the maximum magnification ratio (1-4 or so in the older 135mm macro vs 1-1 in the new 100mm macro), again without necessarily making the newer lens "sharper." I can't tell you the nature of every change to every lens without more time and effort than I am able to expend and unfortunately I don't know offhand of a web site or other handy source for that kind of information. Perhaps someone else does. "James Dunn" wrote in message m... I am looking for lenses to fit a Pentax 67 II. I understand that there are some "new" designs and some "old" designs. How does one tell them apart ? I understand the "new" designs are generally sharper than the "old" ones. Is there somewhere on the web (not pentax.com) that has info on this subject ? Thanks |
#3
|
|||
|
|||
James Dunn wrote in message om...
I am looking for lenses to fit a Pentax 67 II. I understand that there are some "new" designs and some "old" designs. How does one tell them apart ? I understand the "new" designs are generally sharper than the "old" ones. Is there somewhere on the web (not pentax.com) that has info on this subject ? Thanks The new design lenses are rubber focus on the barrel. Many have been around for awhile. The are listed as "late", or 67, as opposed to 6x7, in places like KEH and other used equipment sites. The older designs are metal focusing barrels. The 55mm f/3.5 is metal, theres a 55mm f/4 mid design, and a 55mm f/4 late design. The latest is considered to be sharpest, but the oldest design has the least wide angle distortion. The newest designs are generally considered to be sharper by folks who shoot lens charts or bend over chromes with high powered loups, but older Pentax lenses have rarely lacked high praise, with the exception of the odd lemons. Its rumored that older quaility control was uneven, so if you buy older ones, make it from a returnable source, and give a few tests. I recently picked up a 150mm that has no new version, and was really impressed, having shot a home-made lens chart test, and bent over the neg with a high powered loupe. The Carl-Ziess lenses of a Blad are considered to be sharper, but I have heard time and again that Takumars, ( and Always get SMC, Super Multi-Coated ) are warmer, meaning not as antiseptically precise. The absolute best way to get a stinging sharp result from any lens, is of course, a rock steady tripod, mirror lock up, and a slight hand pressure to dampen the large focal plane shutter. And I would recommend 1/125 for hand held normal lenses, and 1/250 for short tele. |
#4
|
|||
|
|||
James Dunn wrote in message om...
I am looking for lenses to fit a Pentax 67 II. I understand that there are some "new" designs and some "old" designs. How does one tell them apart ? I understand the "new" designs are generally sharper than the "old" ones. Is there somewhere on the web (not pentax.com) that has info on this subject ? Thanks The new design lenses are rubber focus on the barrel. Many have been around for awhile. The are listed as "late", or 67, as opposed to 6x7, in places like KEH and other used equipment sites. The older designs are metal focusing barrels. The 55mm f/3.5 is metal, theres a 55mm f/4 mid design, and a 55mm f/4 late design. The latest is considered to be sharpest, but the oldest design has the least wide angle distortion. The newest designs are generally considered to be sharper by folks who shoot lens charts or bend over chromes with high powered loups, but older Pentax lenses have rarely lacked high praise, with the exception of the odd lemons. Its rumored that older quaility control was uneven, so if you buy older ones, make it from a returnable source, and give a few tests. I recently picked up a 150mm that has no new version, and was really impressed, having shot a home-made lens chart test, and bent over the neg with a high powered loupe. The Carl-Ziess lenses of a Blad are considered to be sharper, but I have heard time and again that Takumars, ( and Always get SMC, Super Multi-Coated ) are warmer, meaning not as antiseptically precise. The absolute best way to get a stinging sharp result from any lens, is of course, a rock steady tripod, mirror lock up, and a slight hand pressure to dampen the large focal plane shutter. And I would recommend 1/125 for hand held normal lenses, and 1/250 for short tele. |
#5
|
|||
|
|||
|
#6
|
|||
|
|||
|
#7
|
|||
|
|||
Thank you all for replying. I guess that at this point the best question
I could ask is : Is there any particular one to avoid ? I also think I heard that some are designed to be "soft focus" for portrature. Also any comment on the Pentax 2X doubler. |
#8
|
|||
|
|||
Thank you all for replying. I guess that at this point the best question
I could ask is : Is there any particular one to avoid ? I also think I heard that some are designed to be "soft focus" for portrature. Also any comment on the Pentax 2X doubler. |
#9
|
|||
|
|||
Thank you all for replying. I guess that at this point the best question
I could ask is : Is there any particular one to avoid ? I also think I heard that some are designed to be "soft focus" for portrature. Also any comment on the Pentax 2X doubler. |
#10
|
|||
|
|||
Is there any particular one to avoid ? I also think I
heard that some are designed to be "soft focus" for portrature. Also any comment on the Pentax 2X doubler. I'm not aware of any to be avoided. I've owned the 45mm, 55mm, 75mm, 75mm shift, 105mm, 135mm macro, and 200mm. All have been outstanding lenses. Pentax does make a 120mm f3.5 soft focus lens. It's about the same size and weight as the 105mm "normal" lens but it takes a big (77mm) filter. I've never owned one. I prefer to obtain a soft focus effect by using a Nikon soft focus filter under the enlarger beause I can vary the degree of softness that way, though the effect isn't exactly the same as using a soft focus lens. I've never used the 2X extender but I do own the 1.4X extender that I mostly use on the 200mm lens to convert it to a 280mm focal length and thus avoid buying and (more importantly, carrying) the 300mm lens. It works very well. The problem to me with a 2X is the loss of two stops of speed. "James Dunn" wrote in message m... Thank you all for replying. I guess that at this point the best question I could ask is : Is there any particular one to avoid ? I also think I heard that some are designed to be "soft focus" for portrature. Also any comment on the Pentax 2X doubler. |
|
Thread Tools | |
Display Modes | |
|
|
Similar Threads | ||||
Thread | Thread Starter | Forum | Replies | Last Post |
Focal plane vs. leaf shutters in MF SLRs | KM | Medium Format Photography Equipment | 724 | December 7th 04 10:58 AM |
Function of clamp knob on the side of the Pentax FA 50 mm 2.8 macro lens | Ifan | 35mm Photo Equipment | 6 | September 9th 04 03:14 PM |
perspective w/ 35mm lenses? | PrincePete01 | Digital Photography | 373 | August 10th 04 02:21 PM |
Mounting 80mm Enlarger Lens over Pentax 6x7 - Any Ideas How? | Nelson Win | Medium Format Photography Equipment | 26 | May 22nd 04 05:18 PM |