k7 af system
Posted 01/05/2010 - 08:59
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Have both camera's and in my view the K7 snaps in quicker, although yet to try it on fast jets or in flight birds. hth
Chris
www.chrismillsphotography.co.uk
" A Hangover is something that occupies the Head you neglected to use the night before".
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K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8
Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8, Pentax A 50mm F1.2
K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM
www.chrismillsphotography.co.uk
" A Hangover is something that occupies the Head you neglected to use the night before".
-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8
Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8, Pentax A 50mm F1.2
K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM
Posted 01/05/2010 - 09:21
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Depends what lens you use on it.
I have found that it is quite sluggish in general with the subject coming towards you. If you are using the DA*60-250 then you will get more shots when manually focusing on fast moving objects than using AF. This is especially the case when the object is moving towards you.
I have found that it is quite sluggish in general with the subject coming towards you. If you are using the DA*60-250 then you will get more shots when manually focusing on fast moving objects than using AF. This is especially the case when the object is moving towards you.
Posted 01/05/2010 - 09:22
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congratulations Chris. you have a very good work in your web site, that photos it was taken whith pentax cameras?
best regards
best regards
Posted 01/05/2010 - 09:25
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mike3legs wrote:
Depends what lens you use on it.
I have found that it is quite sluggish in general with the subject coming towards you. If you are using the DA*60-250 then you will get more shots when manually focusing on fast moving objects than using AF. This is especially the case when the object is moving towards you.
And if i use a sigma lenses with HSM ?Depends what lens you use on it.
I have found that it is quite sluggish in general with the subject coming towards you. If you are using the DA*60-250 then you will get more shots when manually focusing on fast moving objects than using AF. This is especially the case when the object is moving towards you.
the pentax DA* 60-250MM IS A good lense and fast isnīt?
best regards,..
Posted 01/05/2010 - 09:30
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Chrism8 wrote:
Have both camera's and in my view the K7 snaps in quicker, although yet to try it on fast jets or in flight birds. hth
and the sigma 100-300mm it is this lense?Have both camera's and in my view the K7 snaps in quicker, although yet to try it on fast jets or in flight birds. hth
itīs a good lenses and fast, can we use in that lense a teleconverter of 2x?
best regards
http://www.sigmaphoto.com/shop/100-300mm-f4-ex-dg-apo-hsm-sigma#n3
Posted 01/05/2010 - 10:30
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NSantos, Thank you for the comments on my web site, all the images have been shot with a Pentax, varies from the Ist'd to a K10D and the last few with a K7.
I have used the Sigi 100 - 300 F4 with a 2x Conv, does work although you need a decent amount of light to avoid camera shake, have done some test shots at 60th Sec not pin sharp but acceptable.
I have used the Sigi 100 - 300 F4 with a 2x Conv, does work although you need a decent amount of light to avoid camera shake, have done some test shots at 60th Sec not pin sharp but acceptable.
Chris
www.chrismillsphotography.co.uk
" A Hangover is something that occupies the Head you neglected to use the night before".
-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8
Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8, Pentax A 50mm F1.2
K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM
www.chrismillsphotography.co.uk
" A Hangover is something that occupies the Head you neglected to use the night before".
-------------------------------------------------------------
K1 - Sigma 85mm F1.4, Pentax DFA 150 -450 F4.5 / 5.6, Pentax DFA* 24 - 70 F2.8
Samyang 14mm F2.8, Pentax DFA* 70-200 F2.8, Pentax A 50mm F1.2
K3iii + K3ii + K5iis converted to IR, Sigma 17 - 70 F2.8, Pentax 55 - 300 F4.5 / F5.6 PLM
Posted 01/05/2010 - 10:34
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Coming from a K20D to a K7, I would say that the K7' AF is very much faster than the K20D's. AS i use the DA*16-50mm F2.8 as my main work lens.
K1/K3, DA*16-50mm F2.8, FA 31mm F1.8, FA43mm F1.9 Limited, FA77mm F1.8 Limited, SMC Pentax K 85mm F1.8, DA18-135mm F3.5-5.6, FA*28-70mm F1.8, FA*200mm F1.8
Posted 01/05/2010 - 10:49
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i found the k7 to be slightly faster than my k20d and k200d i had and alot better in low light due to the better af assist light.
Posted 01/05/2010 - 10:55
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thats a good results, now i think it go to buy ten k7,...
best regards....
best regards....
Posted 01/05/2010 - 12:00
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Greytop wrote:
I'd agree with Pentaxanne, I went from a K20D to a K-7 and in most circumstances the autofocus is slightly faster, certainly on screw drive lenses.
However in my experience SDM was not much changed (i.e. a bit pedestrian).
yep i 2nd that.
I'd agree with Pentaxanne, I went from a K20D to a K-7 and in most circumstances the autofocus is slightly faster, certainly on screw drive lenses.
However in my experience SDM was not much changed (i.e. a bit pedestrian).
Posted 01/05/2010 - 17:28
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The K7 is also the only Pentax with an extra sensor for the AF that adjust the AF to the type/colour of light so that it is more accurate.
And also you can adjust the AF of 20 lenses (right?) if one front or back focus.
And also you can adjust the AF of 20 lenses (right?) if one front or back focus.
Stefan
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
K10D, K5
DA* 16-50, DA* 50-135, D-FA 100 Macro, DA 40 Ltd, DA 18-55
AF-540FGZ
Posted 01/05/2010 - 17:49
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Mike-P wrote:
yep i am and i was on about the hsm lark.
Greytop wrote:
I'd agree with Pentaxanne
I'd agree with Pentaxanne
pentaxanne wrote:
yep i 2nd that.
Hmm, are you allowed to agree with yourself? yep i 2nd that.
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