mm matter.

300mm is effectively 6x closer to object
450mm is effectively 9x closer to subject
500mm is effectively 10x closer to subject

how much you crop or enlarge after that is up to you

Long lenses, 400mm and up are difficult to use for consistently good focus and IQ. I have used a 400 f/2.8 and after I calmed down and managed to manually focus it, the results were very good, of static subjects.

This is one of those issues where some will find good results with one set up that others won't.

Regards

Smirk, laugh and get the big calculator out....

Thanks Mike and Gareth for the offer. Understand your needs are greater...

I now have two bodies and several lenses on the living room floor.

Logistics R us. It's either K7 + K10 or K7 + istD?

The K7 will be gripped, the K10 or istD will not be. (that's a 1st for me, not having a gripped body). (Wife laughs and says something derogatory!)

Regards

In between trying to use cling film bags for carry on luggage for Qantas, I looked back to see your comments George.

I'm the friendliest guy using Pentax George. I never take criticism personally.

Only the word "support" is misplaced. I do admire the guy for his ability to generate a living from his website. I get wound up at some of his comments, then ask myself why?

Back when he was trying to cut-it, he had a genuine passion and input to photography, these days, he has been reduced to feeding the masses with whatever Canon wish plus his version of Californication or Canofornication.

Best regards (put's another prawn on the barbie)

Gary

My NC10 normally goes as well as the Acer! Acer stays at base whilst the NC10 and two USB portables go field side.

I quickly need a 16-300mm f/2.8 to fit the K7....

Anyone?

Regards

Based there for some time so a V8 pickup and a Lowepro from my main luggage. Also covering Middle East and Asia.

Regards

Now it's really hit the fan.

The lightest, cabin approved wheely case I have is 3.5Kgs. My laptop is 3.5Kgs. It's "gonna" rattle like hell in there....so it up to the loft for my rucksack or plastic carrier bags. M&S, BHS, or ASDA, Morrisons or TESCO.

Too many choices...

Regards

I considered that Gwyn, but didn't want to flag it up as they are liable to make a note of my enquiry.

It's winter over there at the moment so a large coat should not seem unreasonable....

I'll not be flying Qantas after this though. KLM offer 5Kgs more.

Regards

K1000 bought in 1975.

Still have my Sigma 200mm f/3.5 lens that was my first telephoto for it.

Regards

Scales??? Never seen that yet. Which airport/airline?

Regards

I think more is spoken about him that too him.

He is a character.

Regards