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greg_cornish

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Posts posted by greg_cornish

    Canon XTi and Vivata Screw Mount

    in Canon EOS Mount

    Posted

    I have a Pentax K10D but talked my Brother in Law into buying a Canon XTi

    because of his finances. I've seen the results of both and like them both. I

    have old Vivitar manual focus lenses lying around I don't need and will donate

    them to him (He's on a restricted budget) I have pentax telephotos. Is there a

    cheap adapter for these Vivitar screw mounts around I can buy for him as a present?

    Pentax screw mount to K adapter

    in Pentax

    Posted

    While my lens was off and i was fooling around with this, i got my first dust specks on my sensor. so far I have chased it from one side to the other with a rocket blower without removing it. I need a clean room for changing lenses.

    Pentax screw mount to K adapter

    in Pentax

    Posted

    Whew got it. There a clip spring that needs to be pushed to center, then the removal tool prevents you from unscrewing it further. you need to pull thje removal tool out far enough to keep from blocking its travel.

    Final Countdown to K10D long lens

    in Pentax

    Posted

    I read this review from B&H. I think most of his problems would be addressed by my K10D rather than his K110D. I've noticed that the K10D seems to handle lenses a lot better.

     

    Review:

     

    This lens seems to work well but most photos are

    overexposed with the Pentax K110D. Set the expose .5 to 1

    stop darker. Focus is inconsistent but with multishot setting, 1

    of 3 appears in focus. Not all features of the K110D work with

    the lens. When using anything other than auto or program

    mode, attempting to reach the F Stop is difficult due to the

    design of the Pentax lens cover. But, overall, not a bad lens.

    But, if you need all features of the camera stay with the 50 -

    200 Pentax lens. I have both and will probably not use this

    lens very often.

    Final Countdown to K10D long lens

    in Pentax

    Posted

    I've narrowed my long lens search to these three lenses. My selection isn't based as much as good reports

    on specific lenses as much as reports of inconsistency on the reputation of the Tamron, Sigma and Tokina

    lenses. What I hear is, "Well you know that two identical lenses of this this type can be two totally different

    in quality" When I ask about pentax lenses, I hear, "I've never heard anything bad about Pentax lenses, I

    don't think you could go wrong." I don't think two many people I've asked have used pentax.

     

    My concerns are:

    1. If the range of the zoom is wider (75-300 vs 100-300) do you sacrifice quality for a wider range?

    2. Is it better or worse to have an aperture range on the lens? (does this affect sensitivity mode? When I

    place the aperture range on "A" is it the same lens as shooting with a non-aperture ring lens?)

    3. The bottom two Urls seem to be the same except for color, am I wrong or is one better that the other.

    Which will look sexiest on my camera?

    4. The K10D isn't mentioned often in the lens features, but the "ist" cameras are. Is this because there is

    another generation of lenses coming along for the K10D or is it just that the web sites haven't been

    updated to include it in the descriptions?

    5. Am I asking the right question and intelligent questions?

    6. After reading the chart on the bottom link I find the FA lenses seem restricted in their function on the

    K10D. The 75-300 zoom is an FA J and has less restrictions of use.

     

    http://www.bhphotovideo.com/bnh/controller/home?

    O=Search&A=details&Q=&sku=218034&is=USA&addedTroughType=search

     

    http://www.bhphotovideo.com/bnh/controller/home?

    O=8458&A=details&Q=&sku=277625&is=REG&addedTroughType=categoryNavigation

     

    http://www.bhphotovideo.com/c/product/376627-REG/

    Pentax_27718_SMCP_FA_J_75_300mm_f_4_5_5_8.html

     

    http://www.mosphotos.com/PentaxLensCompatibility.htm

    spot in pictures

    in Pentax

    Posted

    No, not with a cloth until you read extensively on cleaning sensors. Get yourself a Giottos

    Rocket blower to blow dust off the sensor (the dust removal works marginally well at best).

    Second, NEVER blow on the sensor with your mouth. If you accidentally spit on it, it's done.

    Now read read read on cleaning sensors

    Wireless flash af 360 on the k10d and k100d

    in Pentax

    Posted

    I started trying to figure out how to get my wireless 360 working with my k10d this evening

    at 5 pm. I just blinded myself wirelessly now at 8:35 pm. What screwed up manuals! Three

    different sets of instructions (Camera, Flash and Firmware) all telling different stories. One

    says you can set the wirelss flash mode in the green mode on the dial. You cant.

    Wireless flash af 360 on the k10d and k100d

    in Pentax

    Posted

    I "hear" it also depends on which lense you have. I received this today from a K10D

    owner.......

     

    Yep, I have a K10d, don't know if I ever mentioned it. I went back at old messages and

    looked but didn't see any mention of it. 2 things will cause your wireless flash not to work

    (other than defective equipment). First, Is the firmware or software level of your camera

    and second, is the type of lens you are using. You can check your firmware level by

    holding down the MENU button while turning the camera on, then release the menu

    button. It should be at Least level 1.10. I don't know if or when they started shipping

    cameras with the updated firmware but you may still be at 1.00 level. Pentax firmware is

    currently at version 1.11 but 1.10 will get you everything you need and turn on a few other

    nice features. Rumor has it they are about to release a version 1.2 for the newer DA*

    lenses but unless you have one, 1.10 will get you everything you need and more. You can

    grab the official version here complete with instructions on how to install it.

     

    http://rolleiman.com/help/K10D_firmware_1.10.zip

     

    The second thing that'll cause wireless flash not to work is the lens. It will NOT work with

    an M (Pentax-M) type lens. That is, if the camera cannot select the Aperture, no wireless

    flash. I don't know why that is, it's annoying, and I thought P-TTL controled the flash, not

    the camera aperture, but that's the way it is. I guess the camera has to be able to read the

    aperture and compare it with the metering to properly set the flash. I was disappointed to

    learn I couldn't use wireless with my bellows unit (which acts like an M lens) for macro

    photos. With something like the Kit lens though (18mm - 55mm DA) it Should work.

     

    All of that out of the way and taken care of, if you can select it, it should fire the flash (the

    camera flash does have to be up for it to work). The only other thing I can think of is you

    may need to tell the camera what Channel the flash is you want to fire. The 540 (and I'm

    pretty sure the 360 as well) will work off of 4 channels. I think the camera defaults to

    channel 1 and there should be no need to select another but it's worth checking. Either the

    camera or the flash manual should help you through that (I don't remember which).

     

    There Are a couple modes also that won't allow wireless flash (green mode comes to

    mind). However, IF you can select it, it Should work. That's about as much help as I'm

    going to be with wireless Pentax flash.

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